Class: Formula Abstract

Inherits:
Object show all
Extended by:
APIHashable, BuildEnvironment::DSL, Cachable, Forwardable, OnSystem::MacOSAndLinux, Predicable
Includes:
Context, FileUtils, Homebrew::Livecheck::Constants, OnSystem::MacOSAndLinux, Utils::Shebang, Utils::Shell
Defined in:
extend/os/mac/formula.rb,
extend/os/linux/formula.rb,
formula.rb

Overview

This class is abstract.

A formula provides instructions and metadata for Homebrew to install a piece of software. Every Homebrew formula is a Formula. All subclasses of Formula (and all Ruby classes) have to be named UpperCase and not-use-dashes. A formula specified in this-formula.rb should have a class named ThisFormula. Homebrew does enforce that the name of the file and the class correspond. Make sure you check with brew search that the name is free!

class Wget < Formula
  homepage "https://www.gnu.org/software/wget/"
  url "https://ftp.gnu.org/gnu/wget/wget-1.15.tar.gz"
  sha256 "52126be8cf1bddd7536886e74c053ad7d0ed2aa89b4b630f76785bac21695fcd"

  def install
    system "./configure", "--prefix=#{prefix}"
    system "make", "install"
  end
end

See Also:

Constant Summary

Constants included from Homebrew::Livecheck::Constants

Homebrew::Livecheck::Constants::LATEST_VERSION

Constants included from Utils::Shell

Utils::Shell::SHELL_PROFILE_MAP, Utils::Shell::UNSAFE_SHELL_CHAR

Class Attribute Summary collapse

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Methods included from OnSystem::MacOSAndLinux

included

Methods included from BuildEnvironment::DSL

env, inherited

Methods included from Cachable

cache, clear_cache

Methods included from Predicable

attr_predicate

Methods included from APIHashable

generated_hash!, generating_hash!, generating_hash?

Methods included from Context

current, current=, #debug?, #quiet?, #verbose?, #with_context

Methods included from Utils::Shell

csh_quote, export_value, from_path, parent, preferred, preferred_path, prepend_path_in_profile, profile, set_variable_in_profile, sh_quote

Methods included from Utils::Shebang

rewrite_shebang

Class Attribute Details

.bottle(&block) ⇒ void

This method returns an undefined value.

Adds a bottle SoftwareSpec. This provides a pre-built binary package built by the Homebrew maintainers for you. It will be installed automatically if there is a binary package for your platform and you haven’t passed or previously used any options on this formula.

If you maintain your own repository, you can add your own bottle links. You can ignore this block entirely if submitting to Homebrew/homebrew-core. It’ll be handled for you by the Brew Test Bot.

bottle do
  root_url "https://example.com" # Optional root to calculate bottle URLs.
  rebuild 1 # Marks the old bottle as outdated without bumping the version/revision of the formula.
  # Optionally specify the HOMEBREW_CELLAR in which the bottles were built.
  sha256 cellar: "/brew/Cellar", catalina:    "ef65c759c5097a36323fa9c77756468649e8d1980a3a4e05695c05e39568967c"
  sha256 cellar: :any,           mojave:      "28f4090610946a4eb207df102d841de23ced0d06ba31cb79e040d883906dcd4f"
  sha256                         high_sierra: "91dd0caca9bd3f38c439d5a7b6f68440c4274945615fae035ff0a369264b8a2f"
end

Homebrew maintainers aim to bottle all formulae that require compilation.

Formulae that can be installed without compilation should be tagged with:

bottle :unneeded

Formulae which should not be bottled should be tagged with:

bottle :disable, "reasons"

Parameters:

See Also:



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# File 'formula.rb', line 3177

def bottle(&block)
  stable.bottle(&block)
end

.deprecated_option(hash) ⇒ Object

Deprecated options are used to rename options and migrate users who used them to newer ones. They are mostly used for migrating non-with options (e.g. enable-debug) to with options (e.g. with-debug).

deprecated_option "enable-debug" => "with-debug"


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# File 'formula.rb', line 3324

def deprecated_option(hash)
  specs.each { |spec| spec.deprecated_option(hash) }
end

.deprecation_date ⇒ Object (readonly)

The date that this Formula was or becomes deprecated. Returns nil if no date is specified.

Returns:

  • Date

See Also:



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# File 'formula.rb', line 3606

def deprecation_date
  @deprecation_date
end

.deprecation_reason ⇒ nil, ... (readonly)

The reason for deprecation of a Formula.

Returns:

  • (nil) —

    if no reason was provided or the formula is not deprecated.

  • (String, Symbol)

See Also:



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# File 'formula.rb', line 3612

def deprecation_reason
  @deprecation_reason
end

.desc=(value) ⇒ Object (writeonly)

A one-line description of the software. Used by users to get an overview of the software and Homebrew maintainers. Shows when running brew info.

desc "Example formula"


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# File 'formula.rb', line 2977

attr_rw :desc

.disable_date ⇒ Object (readonly)

The date that this Formula was or becomes disabled. Returns nil if no date is specified.

Returns:

  • Date

See Also:



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# File 'formula.rb', line 3646

def disable_date
  @disable_date
end

.disable_reason ⇒ String, Symbol (readonly)

The reason this Formula is disabled. Returns nil if no reason was provided or the formula is not disabled.

Returns:

See Also:



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# File 'formula.rb', line 3652

def disable_reason
  @disable_reason
end

.head(val = nil, specs = {}, &block) ⇒ Object

Adds a head SoftwareSpec. This can be installed by passing the --HEAD option to allow installing software directly from a branch of a version-control repository. If called as a method this provides just the url for the SoftwareSpec. If a block is provided you can also add depends_on and Patches just to the head SoftwareSpec. The download strategies (e.g. :using =>) are the same as for url. master is the default branch and doesn’t need stating with a branch: parameter.

head "https://we.prefer.https.over.git.example.com/.git"
head "https://example.com/.git", branch: "name_of_branch"

or (if autodetect fails):

head "https://hg.is.awesome.but.git.has.won.example.com/", using: :hg


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# File 'formula.rb', line 3226

def head(val = nil, specs = {}, &block)
  if block
    @head.instance_eval(&block)
  elsif val
    @head.url(val, specs)
  else
    @head
  end
end

.homepage=(value) ⇒ Object (writeonly)

The homepage for the software. Used by users to get more information about the software and Homebrew maintainers as a point of contact for e.g. submitting patches. Can be opened with running brew home.

homepage "https://www.example.com"


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# File 'formula.rb', line 3017

attr_rw :homepage

.license(args = nil) ⇒ Object

The SPDX ID of the open-source license that the formula uses. Shows when running brew info. Use :any_of, :all_of or :with to describe complex license expressions. :any_of should be used when the user can choose which license to use. :all_of should be used when the user must use all licenses. :with should be used to specify a valid SPDX exception. Add + to an identifier to indicate that the formulae can be licensed under later versions of the same license.

license "BSD-2-Clause"
license "EPL-1.0+"
license any_of: ["MIT", "GPL-2.0-only"]
license all_of: ["MIT", "GPL-2.0-only"]
license "GPL-2.0-only" => { with: "LLVM-exception" }
license :public_domain
license any_of: [
  "MIT",
  :public_domain,
  all_of: ["0BSD", "Zlib", "Artistic-1.0+"],
  "Apache-2.0" => { with: "LLVM-exception" },
]

See Also:



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# File 'formula.rb', line 3002

def license(args = nil)
  if args.nil?
    @licenses
  else
    @licenses = args
  end
end

.livecheck(&block) ⇒ Object

Livecheck can be used to check for newer versions of the software. This method evaluates the DSL specified in the livecheck block of the Formula (if it exists) and sets the instance variables of a Livecheck object accordingly. This is used by brew livecheck to check for newer versions of the software.

livecheck do
  skip "Not maintained"
  url "https://example.com/foo/releases"
  regex /foo-(\d+(?:\.\d+)+)\.tar/
end


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# File 'formula.rb', line 3503

def livecheck(&block)
  return @livecheck unless block

  @livecheckable = true
  @livecheck.instance_eval(&block)
end

.mirror(val) ⇒ Object

Additional URLs for the stable version of the formula. These are only used if the url fails to download. It’s optional and there can be more than one. Generally we add them when the main url is unreliable. If url is really unreliable then we may swap the mirror and url.

mirror "https://in.case.the.host.is.down.example.com"
mirror "https://in.case.the.mirror.is.down.example.com


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# File 'formula.rb', line 3133

def mirror(val)
  stable.mirror(val)
end

.option(name, description = "") ⇒ Object

Options can be used as arguments to brew install. To switch features on/off: "with-something" or "with-otherthing". To use other software: "with-other-software" or "without-foo". Note that for depends_on that are :optional or :recommended, options are generated automatically.

There are also some special options:

  • :universal: build a universal binary/library (e.g. on newer Intel Macs this means a combined x86_64/x86 binary/library).
option "with-spam", "The description goes here without a dot at the end"
option "with-qt", "Text here overwrites what's autogenerated by 'depends_on "qt" => :optional'"
option :universal


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# File 'formula.rb', line 3315

def option(name, description = "")
  specs.each { |spec| spec.option(name, description) }
end

.revision=(value) ⇒ Object (writeonly)

Used for creating new Homebrew versions of software without new upstream versions. For example, if we bump the major version of a library that this Formula depends_on then we may need to update the revision of this Formula to install a new version linked against the new library version. 0 if unset.

revision 1


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# File 'formula.rb', line 3068

attr_rw :revision

.service(&block) ⇒ Object

Service can be used to define services. This method evaluates the DSL specified in the service block of the Formula (if it exists) and sets the instance variables of a Service object accordingly. This is used by brew install to generate a service file.

service do
  run [opt_bin/"foo"]
end


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# File 'formula.rb', line 3519

def service(&block)
  return @service_block unless block

  @service_block = block
end

.sha256(val) ⇒ Object

To verify the cached download’s integrity and security we verify the SHA-256 hash matches what we’ve declared in the Formula. To quickly fill this value you can leave it blank and run brew fetch --force and it’ll tell you the currently valid value.

sha256 "2a2ba417eebaadcb4418ee7b12fe2998f26d6e6f7fda7983412ff66a741ab6f7"


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# File 'formula.rb', line 3145

def sha256(val)
  stable.sha256(val)
end

.stable(&block) ⇒ Object

Allows adding depends_on and Patches just to the stable SoftwareSpec. This is required instead of using a conditional. It is preferable to also pull the url and sha256 into the block if one is added.

stable do
  url "https://example.com/foo-1.0.tar.gz"
  sha256 "2a2ba417eebaadcb4418ee7b12fe2998f26d6e6f7fda7983412ff66a741ab6f7"

  depends_on "libxml2"
  depends_on "libffi"
end


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# File 'formula.rb', line 3208

def stable(&block)
  return @stable unless block

  @stable.instance_eval(&block)
end

.url(val, specs = {}) ⇒ Object

The URL used to download the source for the stable version of the formula. We prefer https for security and proxy reasons. If not inferable, specify the download strategy with using: ....

  • :git, :hg, :svn, :bzr, :fossil, :cvs,
  • :curl (normal file download, will also extract)
  • :nounzip (without extracting)
  • :post (download via an HTTP POST)
url "https://packed.sources.and.we.prefer.https.example.com/archive-1.2.3.tar.bz2"
url "https://some.dont.provide.archives.example.com",
    using:    :git,
    tag:      "1.2.3",
    revision: "db8e4de5b2d6653f66aea53094624468caad15d2"


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# File 'formula.rb', line 3110

def url(val, specs = {})
  stable.url(val, specs)
end

.version(val = nil) ⇒ Object

The version string for the stable version of the formula. The version is autodetected from the URL and/or tag so only needs to be declared if it cannot be autodetected correctly.

version "1.2-final"


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# File 'formula.rb', line 3120

def version(val = nil)
  stable.version(val)
end

.version_scheme=(value) ⇒ Object (writeonly)

Used for creating new Homebrew version schemes. For example, if we want to change version scheme from one to another, then we may need to update version_scheme of this Formula to be able to use new version scheme, e.g. to move from 20151020 scheme to 1.0.0 we need to increment version_scheme. Without this, the prior scheme will always equate to a higher version. 0 if unset.

version_scheme 1


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# File 'formula.rb', line 3080

attr_rw :version_scheme

Instance Attribute Details

#alias_name ⇒ String? (readonly)

The name of the alias that was used to identify this Formula. e.g. another-name-for-this-formula

Returns:



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# File 'formula.rb', line 85

def alias_name
  @alias_name
end

#alias_path ⇒ nil, ... (readonly)

The path to the alias that was used to identify this Formula. e.g. /usr/local/Library/Taps/homebrew/homebrew-core/Aliases/another-name-for-this-formula

Returns:



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# File 'formula.rb', line 80

def alias_path
  @alias_path
end

#build ⇒ BuildOptions, Tab

The BuildOptions or Tab for this Formula. Lists the arguments passed and any options in the Formula. Note that these may differ at different times during the installation of a Formula. This is annoying but the result of state that we’re trying to eliminate.

Returns:



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# File 'formula.rb', line 184

def build
  @build
end

#buildpath ⇒ Pathname? (readonly)

The current working directory during builds. Will only be non-nil inside #install.

Returns:



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# File 'formula.rb', line 160

def buildpath
  @buildpath
end

#follow_installed_alias ⇒ Boolean Also known as: follow_installed_alias?

Whether this formula should be considered outdated if the target of the alias it was installed with has since changed. Defaults to true.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 190

def follow_installed_alias
  @follow_installed_alias
end

#full_alias_name ⇒ String? (readonly)

The fully-qualified alias referring to this Formula. For core formulae it’s the same as #alias_name. e.g. homebrew/tap-name/another-name-for-this-formula

Returns:



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# File 'formula.rb', line 97

def full_alias_name
  @full_alias_name
end

#full_name ⇒ String (readonly)

The fully-qualified name of this Formula. For core formulae it’s the same as #name. e.g. homebrew/tap-name/this-formula

Returns:



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# File 'formula.rb', line 91

def full_name
  @full_name
end

#name ⇒ String (readonly)

The name of this Formula. e.g. this-formula

Returns:



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# File 'formula.rb', line 75

def name
  @name
end

#path ⇒ Pathname (readonly)

The full path to this Formula. e.g. /usr/local/Library/Taps/homebrew/homebrew-core/Formula/t/this-formula.rb

Returns:



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# File 'formula.rb', line 102

def path
  @path
end

#revision ⇒ Integer (readonly)

Used for creating new Homebrew versions of software without new upstream versions.

Returns:

  • (Integer)

See Also:



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# File 'formula.rb', line 150

def revision
  @revision
end

#testpath ⇒ Pathname? (readonly)

The current working directory during tests. Will only be non-nil inside test.

Returns:



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# File 'formula.rb', line 165

def testpath
  @testpath
end

#version_scheme ⇒ Integer (readonly)

Used to change version schemes for packages.

Returns:

  • (Integer)

See Also:



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# File 'formula.rb', line 155

def version_scheme
  @version_scheme
end

Class Method Details

.[](name) ⇒ Object 



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# File 'formula.rb', line 2026

def self.[](name)
  Formulary.factory(name)
end

.conflicts_with(*names) ⇒ Object

One or more formulae that conflict with this one and why.

conflicts_with "imagemagick", because: "both install `convert` binaries"


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# File 'formula.rb', line 3383

def conflicts_with(*names)
  opts = names.last.is_a?(Hash) ? names.pop : {}
  names.each { |name| conflicts << FormulaConflict.new(name, opts[:because]) }
end

.cxxstdlib_check(check_type) ⇒ Object

Pass :skip to this method to disable post-install stdlib checking.



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# File 'formula.rb', line 3417

def cxxstdlib_check(check_type)
  define_method(:skip_cxxstdlib_check?) { true } if check_type == :skip
end

.depends_on(dep) ⇒ Object

The dependencies for this formula. Use strings for the names of other formulae. Homebrew provides some :special Requirements for stuff that needs extra handling (often changing some ENV vars or deciding whether to use the system provided version).

:build means this dependency is only needed during build.

depends_on "cmake" => :build

:test means this dependency is only needed during testing.

depends_on "node" => :test

:recommended dependencies are built by default. But a --without-... option is generated to opt-out.

depends_on "readline" => :recommended

:optional dependencies are NOT built by default unless the auto-generated --with-... option is passed.

depends_on "glib" => :optional

If you need to specify that another formula has to be built with/out certain options (note, no -- needed before the option):

depends_on "zeromq" => "with-pgm"
depends_on "qt" => ["with-qtdbus", "developer"] # Multiple options.

Optional and enforce that “boost” is built using --with-c++11.

depends_on "boost" => [:optional, "with-c++11"]

If a dependency is only needed in certain cases:

depends_on "sqlite" if MacOS.version >= :catalina
depends_on xcode: :build # If the formula really needs full Xcode to compile.
depends_on macos: :mojave # Needs at least macOS Mojave (10.14) to run.

It is possible to only depend on something if build.with? or build.without? "another_formula":

depends_on "postgresql" if build.without? "sqlite"


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# File 'formula.rb', line 3289

def depends_on(dep)
  specs.each { |spec| spec.depends_on(dep) }
end

.deprecate!(date:, because:) ⇒ Object

Deprecates a Formula (on the given date) so a warning is shown on each installation. If the date has not yet passed the formula will not be deprecated.

deprecate! date: "2020-08-27", because: :unmaintained
deprecate! date: "2020-08-27", because: "has been replaced by foo"

See Also:



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# File 'formula.rb', line 3586

def deprecate!(date:, because:)
  @deprecation_date = Date.parse(date)
  return if @deprecation_date > Date.today

  @deprecation_reason = because
  @deprecated = true
end

.deprecated? ⇒ Boolean

Whether this Formula is deprecated (i.e. warns on installation). Defaults to false.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 3598

def deprecated?
  @deprecated == true
end

.disable!(date:, because:) ⇒ Object

Disables a Formula (on the given date) so it cannot be installed. If the date has not yet passed the formula will be deprecated instead of disabled.

disable! date: "2020-08-27", because: :does_not_build
disable! date: "2020-08-27", because: "has been replaced by foo"

See Also:



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# File 'formula.rb', line 3621

def disable!(date:, because:)
  @disable_date = Date.parse(date)

  if @disable_date > Date.today
    @deprecation_reason = because
    @deprecated = true
    return
  end

  @disable_reason = because
  @disabled = true
end

.disabled? ⇒ Boolean

Whether this Formula is disabled (i.e. cannot be installed). Defaults to false.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 3638

def disabled?
  @disabled == true
end

.fails_with(compiler, &block) ⇒ Object

Marks the Formula as failing with a particular compiler so it will fall back to others. For Apple compilers, this should be in the format:

fails_with :clang do
  build 600
  cause "multiple configure and compile errors"
end

The block may be omitted, and if present the build may be omitted; if so, then the compiler will not be allowed for all versions.

major_version should be the major release number only, for instance ‘7’ for the GCC 7 series (7.0, 7.1, etc.). If version or the block is omitted, then the compiler will not be allowed for all compilers in that series.

For example, if a bug is only triggered on GCC 7.1 but is not encountered on 7.2:

fails_with :gcc => '7' do
  version '7.1'
end


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# File 'formula.rb', line 3442

def fails_with(compiler, &block)
  specs.each { |spec| spec.fails_with(compiler, &block) }
end

.freeze ⇒ Object 



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# File 'formula.rb', line 2947

def freeze
  specs.each(&:freeze)
  @livecheck.freeze
  @conflicts.freeze
  @skip_clean_paths.freeze
  @link_overwrite_paths.freeze
  @allowed_missing_libraries.freeze
  super
end

.go_resource(name, &block) ⇒ Object 



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# File 'formula.rb', line 3249

def go_resource(name, &block)
  specs.each { |spec| spec.go_resource(name, &block) }
end

.ignore_missing_libraries(*libs) ⇒ Object

Permit links to certain libraries that don’t exist. Available on Linux only.



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# File 'formula.rb', line 3666

def ignore_missing_libraries(*libs)
  odisabled "ignore_missing_libraries"
  unless Homebrew::SimulateSystem.simulating_or_running_on_linux?
    raise FormulaSpecificationError, "#{__method__} is available on Linux only"
  end

  libraries = libs.flatten
  if libraries.any? { |x| !x.is_a?(String) && !x.is_a?(Regexp) }
    raise FormulaSpecificationError, "#{__method__} can handle Strings and Regular Expressions only"
  end

  allowed_missing_libraries.merge(libraries)
end

.inherited(child) ⇒ Object

Initialise instance variables for each subclass. These need to be initialised before the class is frozen, and some DSL may never be called so it can’t be done lazily.



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# File 'formula.rb', line 2921

def inherited(child)
  super
  child.instance_eval do
    # Ensure this is synced with `freeze`
    @stable = SoftwareSpec.new(flags: build_flags)
    @head = HeadSoftwareSpec.new(flags: build_flags)
    @livecheck = Livecheck.new(self)
    @conflicts = []
    @skip_clean_paths = Set.new
    @link_overwrite_paths = Set.new
    @allowed_missing_libraries = Set.new
    @loaded_from_api = false
  end
end

.installed_with_alias_path(alias_path) ⇒ Object 



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# File 'formula.rb', line 1971

def self.installed_with_alias_path(alias_path)
  return [] if alias_path.nil?

  installed.select { |f| f.installed_alias_path == alias_path }
end

.keg_only(reason, explanation = "") ⇒ Object

Software that will not be symlinked into the brew --prefix and will only live in its Cellar. Other formulae can depend on it and Homebrew will add the necessary includes, libraries, and other paths while building that other formula.

Keg-only formulae are not in your PATH and are not seen by compilers if you build your own software outside of Homebrew. This way, we don’t shadow software provided by macOS.

keg_only :provided_by_macos
keg_only :versioned_formulae
keg_only "because I want it so"


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# File 'formula.rb', line 3412

def keg_only(reason, explanation = "")
  @keg_only_reason = KegOnlyReason.new(reason, explanation)
end

.link_overwrite(*paths) ⇒ Object

Permit overwriting certain files while linking.

Sometimes we accidentally install files outside prefix. Once we fix that, users will get a link conflict error. Overwrite those files with:

link_overwrite "bin/foo", "lib/bar"
link_overwrite "share/man/man1/baz-*"


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# File 'formula.rb', line 3660

def link_overwrite(*paths)
  paths.flatten!
  link_overwrite_paths.merge(paths)
end

.livecheckable? ⇒ Boolean

Whether a livecheck specification is defined or not. It returns true when a livecheck block is present in the Formula and false otherwise, and is used by livecheck.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 3023

def livecheckable?
  @livecheckable == true
end

.needs(*standards) ⇒ Object

Marks the Formula as needing a certain standard, so Homebrew will fall back to other compilers if the default compiler does not implement that standard.

We generally prefer to depends_on a desired compiler and to explicitly use that compiler in a formula’s #install block, rather than implicitly finding a suitable compiler with needs.

See Also:



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# File 'formula.rb', line 3455

def needs(*standards)
  specs.each { |spec| spec.needs(*standards) }
end

.patch(strip = :p1, src = nil, &block) ⇒ Object

External patches can be declared using resource-style blocks.

patch do
  url "https://example.com/example_patch.diff"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end

A strip level of -p1 is assumed. It can be overridden using a symbol argument:

patch :p0 do
  url "https://example.com/example_patch.diff"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end

Patches can be declared in stable and head blocks. This form is preferred over using conditionals.

stable do
  patch do
    url "https://example.com/example_patch.diff"
    sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
  end
end

Embedded (__END__) patches are declared like so:

patch :DATA
patch :p0, :DATA

Patches can also be embedded by passing a string. This makes it possible to provide multiple embedded patches while making only some of them conditional.

patch :p0, "..."

See Also:



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# File 'formula.rb', line 3359

def patch(strip = :p1, src = nil, &block)
  specs.each { |spec| spec.patch(strip, src, &block) }
end

.plist_options(options) ⇒ Object

Deprecated.

Please use Homebrew::Service#require_root instead.

Defines launchd plist handling.

Does your plist need to be loaded at startup?

plist_options startup: true

Or only when necessary or desired by the user?

plist_options manual: "foo"

Or perhaps you’d like to give the user a choice? Ooh fancy.

plist_options startup: true, manual: "foo start"


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# File 'formula.rb', line 3375

def plist_options(options)
  odisabled "plist_options", "service.require_root"
  @plist_startup = options[:startup]
  @plist_manual = options[:manual]
end

.pour_bottle?(only_if: nil, &block) ⇒ Boolean

Defines whether the Formula’s bottle can be used on the given Homebrew installation.

For example, if the bottle requires the Xcode CLT to be installed a Formula would declare:

pour_bottle? do
  reason "The bottle needs the Xcode CLT to be installed."
  satisfy { MacOS::CLT.installed? }
end

If satisfy returns false then a bottle will not be used and instead the Formula will be built from source and reason will be printed.

Alternatively, a preset reason can be passed as a symbol:

pour_bottle? only_if: :clt_installed

Returns:

  • (Boolean) 


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# File 'formula.rb', line 3540

def pour_bottle?(only_if: nil, &block)
  @pour_bottle_check = PourBottleCheck.new(self)
  @pour_bottle_only_if = only_if

  if only_if.present? && block.present?
    raise ArgumentError, "Do not pass both a preset condition and a block to `pour_bottle?`"
  end

  block ||= case only_if
  when :clt_installed
    lambda do |_|
      on_macos do
        T.bind(self, PourBottleCheck)
        reason(+<<~EOS)
          The bottle needs the Apple Command Line Tools to be installed.
            You can install them, if desired, with:
              xcode-select --install
        EOS
        satisfy { MacOS::CLT.installed? }
      end
    end
  when :default_prefix
    lambda do |_|
      T.bind(self, PourBottleCheck)
      reason(+<<~EOS)
        The bottle (and many others) needs to be installed into #{Homebrew::DEFAULT_PREFIX}.
      EOS
      satisfy { HOMEBREW_PREFIX.to_s == Homebrew::DEFAULT_PREFIX }
    end
  else
    raise ArgumentError, "Invalid preset `pour_bottle?` condition" if only_if.present?
  end

  @pour_bottle_check.instance_eval(&block)
end

.resource(name, klass = Resource, &block) ⇒ Object

Additional downloads can be defined as resources and accessed in the install method. Resources can also be defined inside a stable or head block. This mechanism replaces ad-hoc “subformula” classes.

resource "additional_files" do
  url "https://example.com/additional-stuff.tar.gz"
  sha256 "c6bc3f48ce8e797854c4b865f6a8ff969867bbcaebd648ae6fd825683e59fef2"
end


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# File 'formula.rb', line 3243

def resource(name, klass = Resource, &block)
  specs.each do |spec|
    spec.resource(name, klass, &block) unless spec.resource_defined?(name)
  end
end

.service? ⇒ Boolean

Whether a service specification is defined or not. It returns true when a service block is present in the Formula and false otherwise, and is used by service.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 3031

def service?
  @service_block.present?
end

.skip_clean(*paths) ⇒ Object

Skip cleaning paths in a formula.

Sometimes the formula cleaner breaks things. Preserve cleaned paths with:

skip_clean "bin/foo", "lib/bar"

Keep .la files with:

skip_clean :la


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# File 'formula.rb', line 3395

def skip_clean(*paths)
  paths.flatten!
  # Specifying :all is deprecated and will become an error
  skip_clean_paths.merge(paths)
end

.test(&block) ⇒ Boolean

A test is required for new formulae and makes us happy. The block will create, run in and delete a temporary directory.

We want tests that don’t require any user input and test the basic functionality of the application. For example, foo build-foo input.foo is a good test and foo --version or foo --help are bad tests. However, a bad test is better than no test at all.

(testpath/"test.file").write <<~EOS
  writing some test file, if you need to
EOS
assert_equal "OK", shell_output("test_command test.file").strip

Need complete control over stdin, stdout?

require "open3"
Open3.popen3("#{bin}/example", "argument") do |stdin, stdout, _|
  stdin.write("some text")
  stdin.close
  assert_equal "result", stdout.read
end

The test will fail if it returns false, or if an exception is raised. Failed assertions and failed system commands will raise exceptions.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 3487

def test(&block)
  define_method(:test, &block)
end

.uses_from_macos(dep, bounds = {}) ⇒ Object

Indicates use of dependencies provided by macOS. On macOS this is a no-op (as we use the provided system libraries) unless :since specifies a minimum macOS version. On Linux this will act as depends_on.



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# File 'formula.rb', line 3297

def uses_from_macos(dep, bounds = {})
  specs.each { |spec| spec.uses_from_macos(dep, bounds) }
end

Instance Method Details

#active_log_prefix ⇒ String

The prefix, if any, to use in filenames for logging current activity.

Returns:



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# File 'formula.rb', line 1041

def active_log_prefix
  if active_log_type
    "#{active_log_type}."
  else
    ""
  end
end

#add_global_deps_to_spec(spec) ⇒ void

This method returns an undefined value.

Parameters:



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# File 'extend/os/linux/formula.rb', line 30

def add_global_deps_to_spec(spec)
  return unless DevelopmentTools.needs_build_formulae?

  @global_deps ||= begin
    dependency_collector = spec.dependency_collector
    related_formula_names = Set.new([
      name,
      *aliases,
      *versioned_formulae_names,
    ])
    [
      dependency_collector.gcc_dep_if_needed(related_formula_names),
      dependency_collector.glibc_dep_if_needed(related_formula_names),
    ].compact.freeze
  end
  @global_deps.each { |dep| spec.dependency_collector.add(dep) }
end

#alias_changed? ⇒ Boolean

Has the alias used to install the formula changed, or are different formulae already installed with this alias?

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1546

def alias_changed?
  installed_alias_target_changed? || supersedes_an_installed_formula?
end

#aliases ⇒ Array<String>

All aliases for the formula.

Returns:



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# File 'formula.rb', line 549

def aliases
  @aliases ||= if tap
    T.must(tap).alias_reverse_table[full_name].to_a.map do |a|
      a.split("/").last
    end
  else
    []
  end
end

#any_installed_prefix ⇒ Object 



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# File 'formula.rb', line 2098

def any_installed_prefix
  if optlinked? && opt_prefix.exist?
    opt_prefix
  elsif (latest_installed_prefix = installed_prefixes.last)
    latest_installed_prefix
  end
end

#any_installed_version ⇒ Object

Returns the PkgVersion for this formula if it is installed. If not, return nil.



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# File 'formula.rb', line 2108

def any_installed_version
  any_installed_keg&.version
end

#bash_completion ⇒ Pathname

The directory where the formula’s Bash completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 1001

def bash_completion
  prefix/"etc/bash_completion.d"
end

#bin ⇒ Pathname

The directory where the formula’s binaries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Need to install into the #bin but the makefile doesn’t mkdir -p prefix/bin?

bin.mkpath

No make install available?

bin.install "binary1"

Returns:



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# File 'formula.rb', line 747

def bin
  prefix/"bin"
end

#bottle_hash ⇒ Object

Returns the bottle information for a formula.



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# File 'formula.rb', line 2429

def bottle_hash
  bottle_spec = T.must(stable).bottle_specification
  hash = {
    "rebuild"  => bottle_spec.rebuild,
    "root_url" => bottle_spec.root_url,
    "files"    => {},
  }
  bottle_spec.collector.each_tag do |tag|
    tag_spec = bottle_spec.collector.specification_for(tag, no_older_versions: true)
    os_cellar = tag_spec.cellar
    os_cellar = os_cellar.inspect if os_cellar.is_a?(Symbol)

    checksum = tag_spec.checksum.hexdigest
    filename = Bottle::Filename.create(self, tag, bottle_spec.rebuild)
    path, = Utils::Bottles.path_resolved_basename(bottle_spec.root_url, name, checksum, filename)
    url = "#{bottle_spec.root_url}/#{path}"

    hash["files"][tag.to_sym] = {
      "cellar" => os_cellar,
      "url"    => url,
      "sha256" => checksum,
    }
  end
  hash
end

#bottle_tab_attributes ⇒ Hash

Returns:



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# File 'formula.rb', line 2823

def bottle_tab_attributes
  return {} unless bottled?

  T.must(bottle).tab_attributes
end

#caveats ⇒ String?

Warn the user about any Homebrew-specific issues or quirks for this package. These should not contain setup instructions that would apply to installation through a different package manager on a different OS.

def caveats
  <<~EOS
    Are optional. Something the user must be warned about?
  EOS
end
def caveats
  s = <<~EOS
    Print some important notice to the user when `brew info [formula]` is
    called or when brewing a formula.
    This is optional. You can use all the vars like #{version} here.
  EOS
  s += "Some issue only on older systems" if MacOS.version < :el_capitan
  s
end

Returns:



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# File 'formula.rb', line 1282

def caveats
  nil
end

#current_installed_alias_target ⇒ Object 



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# File 'formula.rb', line 1523

def current_installed_alias_target
  Formulary.factory(T.must(installed_alias_name)) if installed_alias_path
end

#deprecated? ⇒ Boolean

Whether this Formula is deprecated (i.e. warns on installation). Defaults to false.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 1350

delegate deprecated?: :"self.class"

#deprecation_date ⇒ Object

The date that this Formula was or becomes deprecated. Returns nil if no date is specified.

Returns:

  • Date

See Also:



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# File 'formula.rb', line 1357

delegate deprecation_date: :"self.class"

#deprecation_reason ⇒ String, Symbol

The reason this Formula is deprecated. Returns nil if no reason is specified or the formula is not deprecated.

Returns:

See Also:



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# File 'formula.rb', line 1364

delegate deprecation_reason: :"self.class"

#desc ⇒ Object

The description of the software.

See Also:



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# File 'formula.rb', line 422

delegate desc: :"self.class"

#deuniversalize_machos(*targets) ⇒ void

This method returns an undefined value.

Replaces a universal binary with its native slice.

If called with no parameters, does this with all compatible universal binaries in a Formula’s Keg.

Parameters:



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# File 'extend/os/linux/formula.rb', line 27

def deuniversalize_machos(*targets); end

#disable_date ⇒ Object

The date that this Formula was or becomes disabled. Returns nil if no date is specified.

Returns:

  • Date

See Also:



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# File 'formula.rb', line 1378

delegate disable_date: :"self.class"

#disable_reason ⇒ String, Symbol

The reason this Formula is disabled. Returns nil if no reason is specified or the formula is not disabled.

Returns:

See Also:



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# File 'formula.rb', line 1385

delegate disable_reason: :"self.class"

#disabled? ⇒ Boolean

Whether this Formula is disabled (i.e. cannot be installed). Defaults to false.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 1371

delegate disabled?: :"self.class"

#doc ⇒ Pathname

The directory where the formula’s documentation should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 755

def doc
  share/"doc"/name
end

#elisp ⇒ Pathname

The directory where Emacs Lisp files should be installed, with the formula name appended to avoid linking conflicts.

To install an Emacs mode included with a software package:

elisp.install "contrib/emacs/example-mode.el"

Returns:



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# File 'formula.rb', line 929

def elisp
  prefix/"share/emacs/site-lisp"/name
end

#etc ⇒ Pathname

The directory where the formula’s configuration files should be installed. Anything using etc.install will not overwrite other files on e.g. upgrades but will write a new file named *.default. This directory is not inside the HOMEBREW_CELLAR so it persists across upgrades.

Returns:



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# File 'formula.rb', line 957

def etc
  (HOMEBREW_PREFIX/"etc").extend(InstallRenamed)
end

#fetch_bottle_tab ⇒ void

This method returns an undefined value.



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# File 'formula.rb', line 2816

def fetch_bottle_tab
  return unless bottled?

  T.must(bottle).fetch_tab
end

#fetch_patches ⇒ Object 



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# File 'formula.rb', line 2811

def fetch_patches
  patchlist.select(&:external?).each(&:fetch)
end

#fish_completion ⇒ Pathname

The directory where the formula’s fish completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 1019

def fish_completion
  share/"fish/vendor_completions.d"
end

#fish_function ⇒ Pathname

The directory where the formula’s fish function files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 992

def fish_function
  share/"fish/vendor_functions.d"
end

#frameworks ⇒ Pathname

The directory where the formula’s Frameworks should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. This is not symlinked into HOMEBREW_PREFIX.

Returns:



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# File 'formula.rb', line 938

def frameworks
  prefix/"Frameworks"
end

#full_installed_alias_name ⇒ Object 



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# File 'formula.rb', line 340

def full_installed_alias_name
  full_name_with_optional_tap(installed_alias_name)
end

#full_installed_specified_name ⇒ Object

The name (including tap) specified to install this formula.



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# File 'formula.rb', line 372

def full_installed_specified_name
  full_installed_alias_name || full_name
end

#full_specified_name ⇒ Object

The name (including tap) specified to find this formula.



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# File 'formula.rb', line 362

def full_specified_name
  full_alias_name || full_name
end

#generate_completions_from_executable(*commands, base_name: name, shells: [:bash, :zsh, :fish], shell_parameter_format: nil) ⇒ void

This method returns an undefined value.

Generate shell completions for a formula for bash, zsh, and fish, using the formula’s executable.

Examples:

Using default values for optional arguments

generate_completions_from_executable(bin/"foo", "completions")

# translates to
(bash_completion/"foo").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo", "completions", "bash")
(zsh_completion/"_foo").write Utils.safe_popen_read({ "SHELL" => "zsh" }, bin/"foo", "completions", "zsh")
(fish_completion/"foo.fish").write Utils.safe_popen_read({ "SHELL" => "fish" }, bin/"foo",
                                                         "completions", "fish")

Selecting shells and using a different base_name

generate_completions_from_executable(bin/"foo", "completions", shells: [:bash, :zsh], base_name: "bar")

# translates to
(bash_completion/"bar").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo", "completions", "bash")
(zsh_completion/"_bar").write Utils.safe_popen_read({ "SHELL" => "zsh" }, bin/"foo", "completions", "zsh")

Using predefined shell_parameter_format :flag

generate_completions_from_executable(bin/"foo", "completions", shell_parameter_format: :flag, shells: [:bash])

# translates to
(bash_completion/"foo").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo", "completions", "--bash")

Using predefined shell_parameter_format :arg

generate_completions_from_executable(bin/"foo", "completions", shell_parameter_format: :arg, shells: [:bash])

# translates to
(bash_completion/"foo").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo",
                                                    "completions", "--shell=bash")

Using predefined shell_parameter_format :none

generate_completions_from_executable(bin/"foo", "completions", shell_parameter_format: :none, shells: [:bash])

# translates to
(bash_completion/"foo").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo", "completions")

Using predefined shell_parameter_format :click

generate_completions_from_executable(bin/"foo", shell_parameter_format: :click, shells: [:zsh])

# translates to
(zsh_completion/"_foo").write Utils.safe_popen_read({ "SHELL" => "zsh", "_FOO_COMPLETE" => "zsh_source" },
                                                    bin/"foo")

Using custom shell_parameter_format

generate_completions_from_executable(bin/"foo", "completions", shell_parameter_format: "--selected-shell=",
                                     shells: [:bash])

# translates to
(bash_completion/"foo").write Utils.safe_popen_read({ "SHELL" => "bash" }, bin/"foo",
                                                    "completions", "--selected-shell=bash")

Parameters:

  • commands (Pathname, String) —

    the path to the executable and any passed subcommand(s) to use for generating the completion scripts.

  • base_name (String) (defaults to: name) —

    the base name of the generated completion script. Defaults to the formula name.

  • shells (Array<Symbol>) (defaults to: [:bash, :zsh, :fish]) —

    the shells to generate completion scripts for. Defaults to [:bash, :zsh, :fish].

  • shell_parameter_format (Symbol, String, nil) (defaults to: nil) —

    specify how shells should each be passed to the executable. Takes either a String representing a prefix, or one of [:flag, :arg, :none, :click]. Defaults to plainly passing the shell.



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# File 'formula.rb', line 1860

def generate_completions_from_executable(*commands,
                                         base_name: name,
                                         shells: [:bash, :zsh, :fish],
                                         shell_parameter_format: nil)
  completion_script_path_map = {
    bash: bash_completion/base_name,
    zsh:  zsh_completion/"_#{base_name}",
    fish: fish_completion/"#{base_name}.fish",
  }

  shells.each do |shell|
    popen_read_env = { "SHELL" => shell.to_s }
    script_path = completion_script_path_map[shell]
    shell_parameter = if shell_parameter_format.nil?
      shell.to_s
    elsif shell_parameter_format == :flag
      "--#{shell}"
    elsif shell_parameter_format == :arg
      "--shell=#{shell}"
    elsif shell_parameter_format == :none
      nil
    elsif shell_parameter_format == :click
      prog_name = File.basename(commands.first.to_s).upcase.tr("-", "_")
      popen_read_env["_#{prog_name}_COMPLETE"] = "#{shell}_source"
      nil
    else
      "#{shell_parameter_format}#{shell}"
    end

    popen_read_args = %w[]
    popen_read_args << commands
    popen_read_args << shell_parameter if shell_parameter.present?
    popen_read_args.flatten!

    popen_read_options = {}
    popen_read_options[:err] = :err unless ENV["HOMEBREW_STDERR"]

    script_path.dirname.mkpath
    script_path.write Utils.safe_popen_read(popen_read_env, *popen_read_args, **popen_read_options)
  end
end

#head_version_outdated?(version, fetch_head: false) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'formula.rb', line 646

def head_version_outdated?(version, fetch_head: false)
  tab = Tab.for_keg(prefix(version))

  return true if tab.version_scheme < version_scheme
  return true if stable && tab.stable_version && tab.stable_version < T.must(stable).version
  return false unless fetch_head
  return false unless head&.downloader.is_a?(VCSDownloadStrategy)

  downloader = T.must(head).downloader

  with_context quiet: true do
    downloader.commit_outdated?(version.version.commit)
  end
end

#homepage ⇒ Object

The homepage for the software.

See Also:



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# File 'formula.rb', line 432

delegate homepage: :"self.class"

#include ⇒ Pathname

The directory where the formula’s headers should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

include.install "example.h"

Returns:



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# File 'formula.rb', line 766

def include
  prefix/"include"
end

#info ⇒ Pathname

The directory where the formula’s info files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 774

def info
  share/"info"
end

#inreplace(paths, before = nil, after = nil, audit_result = true, &block) ⇒ void

This method returns an undefined value.

Sometimes we have to change a bit before we install. Mostly we prefer a patch, but if you need the prefix of this formula in the patch you have to resort to inreplace, because in the patch you don’t have access to any variables defined by the formula, as only HOMEBREW_PREFIX is available in the embedded patch.

inreplace supports regular expressions:

inreplace "somefile.cfg", /look[for]what?/, "replace by #{bin}/tool"

inreplace supports blocks:

inreplace "Makefile" do |s|
  s.gsub! "/usr/local", HOMEBREW_PREFIX.to_s
end

Parameters:

See Also:



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# File 'formula.rb', line 2559

def inreplace(paths, before = nil, after = nil, audit_result = true, &block) # rubocop:disable Style/OptionalBooleanParameter
  Utils::Inreplace.inreplace(paths, before, after, audit_result: audit_result, &block)
rescue Utils::Inreplace::Error => e
  onoe e.to_s
  raise BuildError.new(self, "inreplace", Array(paths), {})
end

#install ⇒ Object

This method is overridden in Formula subclasses to provide the installation instructions. The sources (from url) are downloaded, hash-checked and then Homebrew changes into a temporary directory where the archive is unpacked or repository cloned.

def install
  system "./configure", "--prefix=#{prefix}"
  system "make", "install"
end


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# File 'formula.rb', line 2530

def install; end

#installed_alias_name ⇒ String?

Returns:



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# File 'formula.rb', line 336

def installed_alias_name
  File.basename(installed_alias_path) if installed_alias_path
end

#installed_alias_path ⇒ Object

The alias path that was used to install this formula, if it exists. Can differ from #alias_path, which is the alias used to find the formula, and is specified to this instance.



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# File 'formula.rb', line 326

def installed_alias_path
  build_tab = build
  path = build_tab.source["path"] if build_tab.is_a?(Tab)
  return unless path&.match?(%r{#{HOMEBREW_TAP_DIR_REGEX}/Aliases}o)
  return unless File.symlink?(path)

  path
end

#installed_alias_target_changed? ⇒ Boolean

Has the target of the alias used to install this formula changed? Returns false if the formula wasn’t installed with an alias.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1530

def installed_alias_target_changed?
  target = current_installed_alias_target
  return false unless target

  target.name != name
end

#installed_specified_name ⇒ Object

The name specified to install this formula.



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# File 'formula.rb', line 367

def installed_specified_name
  installed_alias_name || name
end

#keg_only? ⇒ Boolean

Rarely, you don’t want your library symlinked into the main prefix. See gettext.rb for an example.

Returns:

  • (Boolean)

See Also:



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# File 'formula.rb', line 1290

def keg_only?
  return false unless keg_only_reason

  keg_only_reason.applicable?
end

#kext_prefix ⇒ Pathname

The directory where the formula’s kernel extensions should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. This is not symlinked into HOMEBREW_PREFIX.

Returns:



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# File 'formula.rb', line 947

def kext_prefix
  prefix/"Library/Extensions"
end

#latest_formula ⇒ Object

If the alias has changed value, return the new formula. Otherwise, return self.



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# File 'formula.rb', line 1552

def latest_formula
  installed_alias_target_changed? ? current_installed_alias_target : self
end

#latest_head_prefix ⇒ Object 



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# File 'formula.rb', line 641

def latest_head_prefix
  head_version = latest_head_version
  prefix(head_version) if head_version
end

#latest_head_version ⇒ Object 



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# File 'formula.rb', line 630

def latest_head_version
  head_versions = installed_prefixes.map do |pn|
    pn_pkgversion = PkgVersion.parse(pn.basename.to_s)
    pn_pkgversion if pn_pkgversion.head?
  end.compact

  head_versions.max_by do |pn_pkgversion|
    [Tab.for_keg(prefix(pn_pkgversion)).source_modified_time, pn_pkgversion.revision]
  end
end

#launchd_service_path ⇒ Pathname

The generated launchd service file path.

Returns:



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# File 'formula.rb', line 1111

def launchd_service_path
  opt_prefix/"#{plist_name}.plist"
end

#lib ⇒ Pathname

The directory where the formula’s libraries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

lib.install "example.dylib"

Returns:



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# File 'formula.rb', line 785

def lib
  prefix/"lib"
end

#libexec ⇒ Pathname

The directory where the formula’s binaries should be installed. This is not symlinked into HOMEBREW_PREFIX. It is commonly used to install files that we do not wish to be symlinked into HOMEBREW_PREFIX from one of the other directories and instead manually create symlinks or wrapper scripts into e.g. #bin.

libexec.install "foo.jar"
bin.write_jar_script libexec/"foo.jar", "foo"

Returns:



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# File 'formula.rb', line 798

def libexec
  prefix/"libexec"
end

#license ⇒ Object

The SPDX ID of the software license.

See Also:



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# File 'formula.rb', line 427

delegate license: :"self.class"

#linked? ⇒ Boolean

Is the formula linked?

Returns:

  • (Boolean) 


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# File 'formula.rb', line 689

def linked?
  linked_keg.symlink?
end

#linked_version ⇒ PkgVersion?

PkgVersion of the linked keg for the formula.

Returns:



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# File 'formula.rb', line 708

def linked_version
  return unless linked?

  Keg.for(linked_keg).version
end

#livecheck ⇒ Object

The livecheck specification for the software.

See Also:



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# File 'formula.rb', line 437

delegate livecheck: :"self.class"

#livecheckable? ⇒ Object

Is a livecheck specification defined for the software?

See Also:



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# File 'formula.rb', line 442

delegate livecheckable?: :"self.class"

#loader_path ⇒ String

Returns:



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# File 'extend/os/linux/formula.rb', line 22

def loader_path
  "$ORIGIN"
end

#man ⇒ Pathname

The root directory where the formula’s manual pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. Often one of the more specific man functions should be used instead, e.g. #man1.

Returns:



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# File 'formula.rb', line 808

def man
  share/"man"
end

#man1 ⇒ Pathname

The directory where the formula’s man1 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

man1.install "example.1"

Returns:



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# File 'formula.rb', line 819

def man1
  man/"man1"
end

#man2 ⇒ Pathname

The directory where the formula’s man2 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 827

def man2
  man/"man2"
end

#man3 ⇒ Pathname

The directory where the formula’s man3 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

man3.install "man.3"

Returns:



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# File 'formula.rb', line 838

def man3
  man/"man3"
end

#man4 ⇒ Pathname

The directory where the formula’s man4 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 846

def man4
  man/"man4"
end

#man5 ⇒ Pathname

The directory where the formula’s man5 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 854

def man5
  man/"man5"
end

#man6 ⇒ Pathname

The directory where the formula’s man6 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 862

def man6
  man/"man6"
end

#man7 ⇒ Pathname

The directory where the formula’s man7 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 870

def man7
  man/"man7"
end

#man8 ⇒ Pathname

The directory where the formula’s man8 pages should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 878

def man8
  man/"man8"
end

#migration_needed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1477

def migration_needed?
  !oldnames_to_migrate.empty? && !rack.exist?
end

#missing_dependencies(hide: nil) ⇒ Object

Returns a list of formulae depended on by this formula that aren’t installed.



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# File 'formula.rb', line 2169

def missing_dependencies(hide: nil)
  hide ||= []
  runtime_formula_dependencies.select do |f|
    hide.include?(f.name) || f.installed_prefixes.empty?
  end
# If we're still getting unavailable formulae at this stage the best we can
# do is just return no results.
rescue FormulaUnavailableError
  []
end

#mkdir(name, &block) ⇒ Object

A version of FileUtils.mkdir that also changes to that folder in a block.



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# File 'formula.rb', line 2792

def mkdir(name, &block)
  result = FileUtils.mkdir_p(name)
  return result unless block

  FileUtils.chdir(name, &block)
end

#mktemp(prefix = name, opts = {}, &block) ⇒ Object

Create a temporary directory then yield. When the block returns, recursively delete the temporary directory. Passing opts[:retain] or calling do |staging| ... staging.retain! in the block will skip the deletion and retain the temporary directory’s contents.



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# File 'formula.rb', line 2786

def mktemp(prefix = name, opts = {}, &block)
  Mktemp.new(prefix, opts).run(&block)
end

#new_formula_available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1519

def new_formula_available?
  installed_alias_target_changed? && !latest_formula.latest_version_installed?
end

#old_installed_formulae ⇒ Object 



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# File 'formula.rb', line 1556

def old_installed_formulae
  # If this formula isn't the current target of the alias,
  # it doesn't make sense to say that other formulae are older versions of it
  # because we don't know which came first.
  return [] if alias_path.nil? || installed_alias_target_changed?

  self.class.installed_with_alias_path(alias_path).reject { |f| f.name == name }
end

#oldname ⇒ String?

Deprecated.

Use #oldnames instead.

An old name for the formula.

Returns:



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# File 'formula.rb', line 532

def oldname
  odeprecated "Formula#oldname", "Formula#oldnames"
  @oldname ||= oldnames.first
end

#oldnames ⇒ Array<String>

Old names for the formula.

Returns:



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# File 'formula.rb', line 539

def oldnames
  @oldnames ||= if tap
    T.must(tap).formula_oldnames.fetch(name, [])
  else
    []
  end
end

#opt_bin ⇒ Pathname

Returns:



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# File 'formula.rb', line 1151

def opt_bin
  opt_prefix/"bin"
end

#opt_elisp ⇒ Pathname

Returns:



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# File 'formula.rb', line 1186

def opt_elisp
  opt_prefix/"share/emacs/site-lisp"/name
end

#opt_frameworks ⇒ Pathname

Returns:



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# File 'formula.rb', line 1191

def opt_frameworks
  opt_prefix/"Frameworks"
end

#opt_include ⇒ Pathname

Returns:



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# File 'formula.rb', line 1156

def opt_include
  opt_prefix/"include"
end

#opt_lib ⇒ Pathname

Returns:



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# File 'formula.rb', line 1161

def opt_lib
  opt_prefix/"lib"
end

#opt_libexec ⇒ Pathname

Returns:



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# File 'formula.rb', line 1166

def opt_libexec
  opt_prefix/"libexec"
end

#opt_pkgshare ⇒ Pathname

Returns:



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# File 'formula.rb', line 1181

def opt_pkgshare
  opt_prefix/"share"/name
end

#opt_prefix ⇒ Pathname

A stable path for this formula, when installed. Contains the formula name but no version number. Only the active version will be linked here if multiple versions are installed.

This is the preferred way to refer to a formula in plists or from another formula, as the path is stable even when the software is updated.

args << "--with-readline=#{Formula["readline"].opt_prefix}" if build.with? "readline"

Returns:



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# File 'formula.rb', line 1146

def opt_prefix
  HOMEBREW_PREFIX/"opt"/name
end

#opt_sbin ⇒ Pathname

Returns:



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# File 'formula.rb', line 1171

def opt_sbin
  opt_prefix/"sbin"
end

#opt_share ⇒ Pathname

Returns:



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# File 'formula.rb', line 1176

def opt_share
  opt_prefix/"share"
end

#option_defined? ⇒ Object

If a named option is defined for the currently active SoftwareSpec.



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# File 'formula.rb', line 598

delegate option_defined?: :active_spec

#optlinked? ⇒ Boolean

Is the formula linked to opt?

Returns:

  • (Boolean) 


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# File 'formula.rb', line 695

def optlinked?
  opt_prefix.symlink?
end

#pkg_version ⇒ PkgVersion

The PkgVersion for this formula with version and #revision information.

Returns:



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# File 'formula.rb', line 483

def pkg_version
  PkgVersion.new(version, revision)
end

#pkgetc ⇒ Pathname

A subdirectory of etc with the formula name suffixed. e.g. $HOMEBREW_PREFIX/etc/openssl@1.1 Anything using pkgetc.install will not overwrite other files on e.g. upgrades but will write a new file named *.default.

Returns:



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# File 'formula.rb', line 966

def pkgetc
  (HOMEBREW_PREFIX/"etc"/name).extend(InstallRenamed)
end

#pkgshare ⇒ Pathname

The directory where the formula’s shared files should be installed, with the name of the formula appended to avoid linking conflicts. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

No make install available?

pkgshare.install "examples"

Returns:



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# File 'formula.rb', line 919

def pkgshare
  prefix/"share"/name
end

#plist ⇒ Object

Deprecated.

Please use Homebrew::Service instead.

This method can be overridden to provide a plist.

def plist; <<~EOS
  <?xml version="1.0" encoding="UTF-8"?>
  <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
  <plist version="1.0">
  <dict>
    <key>Label</key>
      <string>#{plist_name}</string>
    <key>ProgramArguments</key>
    <array>
      <string>#{opt_bin}/example</string>
      <string>--do-this</string>
    </array>
    <key>RunAtLoad</key>
    <true />
    <key>KeepAlive</key>
    <true />
    <key>StandardErrorPath</key>
    <string>/dev/null</string>
    <key>StandardOutPath</key>
    <string>/dev/null</string>
  </dict>
  </plist>
  EOS
end

See Also:



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# File 'formula.rb', line 1086

def plist
  nil
end

#plist_name ⇒ String

The generated launchd #plist service name.

Returns:



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# File 'formula.rb', line 1092

def plist_name
  service.plist_name
end

#plist_path ⇒ Pathname

The generated launchd #plist file path.

Returns:



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# File 'formula.rb', line 1104

def plist_path
  odisabled "formula.plist_path", "formula.launchd_service_path"
  launchd_service_path
end

#post_install ⇒ void

This method returns an undefined value.

Can be overridden to run commands on both source and bottle installation.



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# File 'formula.rb', line 1211

def post_install; end

#pour_bottle? ⇒ Boolean

Indicates that this formula supports bottles. (Not necessarily that one should be used in the current installation run.) Can be overridden to selectively disable bottles from formulae. Defaults to true so overridden version does not have to check if bottles are supported. Replaced by pour_bottle?’s satisfy method if it is specified.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1202

def pour_bottle?
  true
end

#prefix(version = pkg_version) ⇒ Object

The directory in the cellar that the formula is installed to. This directory points to #opt_prefix if it exists and if #prefix is not called from within the same formula’s #install or #post_install methods. Otherwise, return the full path to the formula’s versioned cellar.



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# File 'formula.rb', line 677

def prefix(version = pkg_version)
  versioned_prefix = versioned_prefix(version)
  if !@prefix_returns_versioned_prefix && version == pkg_version &&
     versioned_prefix.directory? && Keg.new(versioned_prefix).optlinked?
    opt_prefix
  else
    versioned_prefix
  end
end

#prefix_linked?(version = pkg_version) ⇒ Boolean

If a formula’s linked keg points to the prefix.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 700

def prefix_linked?(version = pkg_version)
  return false unless linked?

  linked_keg.resolved_path == versioned_prefix(version)
end

#resource ⇒ Object

A named Resource for the currently active SoftwareSpec. Additional downloads can be defined as #resources. Resource#stage will create a temporary directory and yield to a block.

resource("additional_files").stage { bin.install "my/extra/tool" }


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# File 'formula.rb', line 527

delegate resource: :active_spec

#resources ⇒ Object

The Resources for the currently active SoftwareSpec.



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# File 'formula.rb', line 561

def_delegator :"active_spec.resources", :values, :resources

#rpath(source: bin, target: lib) ⇒ String

Executable/Library RPATH according to platform conventions.

Optionally specify a source or target depending on the location of the file containing the RPATH command and where its target is located.

rpath #=> "@loader_path/../lib"
rpath(target: frameworks) #=> "@loader_path/../Frameworks"
rpath(source: libexec/"bin") #=> "@loader_path/../../lib"

Parameters:

Returns:



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# File 'formula.rb', line 1739

def rpath(source: bin, target: lib)
  unless target.to_s.start_with?(HOMEBREW_PREFIX)
    raise "rpath `target` should only be used for paths inside HOMEBREW_PREFIX!"
  end

  "#{loader_path}/#{target.relative_path_from(source)}"
end

#runtime_installed_formula_dependents ⇒ Object 



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# File 'formula.rb', line 2150

def runtime_installed_formula_dependents
  # `any_installed_keg` and `runtime_dependencies` `select`s ensure
  # that we don't end up with something `Formula#runtime_dependencies` can't
  # read from a `Tab`.
  Formula.cache[:runtime_installed_formula_dependents] ||= {}
  Formula.cache[:runtime_installed_formula_dependents][full_name] ||= Formula.installed
                                                                             .select(&:any_installed_keg)
                                                                             .select(&:runtime_dependencies)
                                                                             .select do |f|
    f.runtime_formula_dependencies.any? do |dep|
      full_name == dep.full_name
    rescue
      name == dep.name
    end
  end
end

#sbin ⇒ Pathname

The directory where the formula’s sbin binaries should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only. Generally we try to migrate these to #bin instead.

Returns:



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# File 'formula.rb', line 887

def sbin
  prefix/"sbin"
end

#service ⇒ Object

The service specification of the software.



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# File 'formula.rb', line 1128

def service
  @service ||= Homebrew::Service.new(self, &self.class.service)
end

#service? ⇒ Object

Is a service specification defined for the software?

See Also:



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# File 'formula.rb', line 447

delegate service?: :"self.class"

#service_name ⇒ String

The generated service name.

Returns:



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# File 'formula.rb', line 1098

def service_name
  service.service_name
end

#share ⇒ Pathname

The directory where the formula’s shared files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Need a custom directory?

(share/"concept").mkpath

Installing something into another custom directory?

(share/"concept2").install "ducks.txt"

Install ./example_code/simple/ones to share/demos:

(share/"demos").install "example_code/simple/ones"

Install ./example_code/simple/ones to share/demos/examples:

(share/"demos").install "example_code/simple/ones" => "examples"

Returns:



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# File 'formula.rb', line 907

def share
  prefix/"share"
end

#shared_library(name, version = nil) ⇒ String

Shared library names according to platform conventions.

Optionally specify a version to restrict the shared library to a specific version. The special string “*” matches any version.

If name is specified as “*”, match any shared library of any version.

shared_library("foo")      #=> foo.dylib
shared_library("foo", 1)   #=> foo.1.dylib
shared_library("foo", "*") #=> foo.2.dylib, foo.1.dylib, foo.dylib
shared_library("*")        #=> foo.dylib, bar.dylib

Parameters:

  • name (String)
  • version (String, Integer, nil) (defaults to: nil)

Returns:



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# File 'extend/os/linux/formula.rb', line 12

def shared_library(name, version = nil)
  suffix = if version == "*" || (name == "*" && version.blank?)
    "{,.*}"
  elsif version.present?
    ".#{version}"
  end
  "#{name}.so#{suffix}"
end

#skip_cxxstdlib_check? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1388

def skip_cxxstdlib_check?
  false
end

#specified_name ⇒ Object

The name specified to find this formula.



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# File 'formula.rb', line 357

def specified_name
  alias_name || name
end

#specified_path ⇒ Object

The path that was specified to find this formula.



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# File 'formula.rb', line 345

def specified_path
  alias_pathname = Pathname(T.must(alias_path)) if alias_path.present?
  return alias_pathname if alias_pathname&.exist?

  return @unresolved_path if @unresolved_path.exist?

  return local_bottle_path if local_bottle_path.presence&.exist?

  alias_pathname || @unresolved_path
end

#std_cabal_v2_args ⇒ Array<String>

Standard parameters for cabal-v2 builds.

Returns:



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# File 'formula.rb', line 1675

def std_cabal_v2_args
  env = T.cast(ENV, T.any(Stdenv, Superenv))

  # cabal-install's dependency-resolution backtracking strategy can
  # easily need more than the default 2,000 maximum number of
  # "backjumps," since Hackage is a fast-moving, rolling-release
  # target. The highest known needed value by a formula was 43,478
  # for git-annex, so 100,000 should be enough to avoid most
  # gratuitous backjumps build failures.
  ["--jobs=#{env.make_jobs}", "--max-backjumps=100000", "--install-method=copy", "--installdir=#{bin}"]
end

#std_cargo_args(root: prefix, path: ".") ⇒ Array<String>

Standard parameters for cargo builds.

Parameters:

Returns:



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# File 'formula.rb', line 1633

def std_cargo_args(root: prefix, path: ".")
  ["--locked", "--root=#{root}", "--path=#{path}"]
end

#std_cmake_args(install_prefix: prefix, install_libdir: "lib", find_framework: "LAST") ⇒ Array<String> Also known as: generic_std_cmake_args

Standard parameters for CMake builds.

Setting CMAKE_FIND_FRAMEWORK to “LAST” tells CMake to search for our libraries before trying to utilize Frameworks, many of which will be from 3rd party installs.

Parameters:

Returns:



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# File 'extend/os/mac/formula.rb', line 20

def std_cmake_args(install_prefix: prefix, install_libdir: "lib", find_framework: "LAST")
  args = generic_std_cmake_args(install_prefix: install_prefix, install_libdir: install_libdir,
                                find_framework: find_framework)

  # Avoid false positives for clock_gettime support on 10.11.
  # CMake cache entries for other weak symbols may be added here as needed.
  args << "-DHAVE_CLOCK_GETTIME:INTERNAL=0" if MacOS.version == "10.11" && MacOS::Xcode.version >= "8.0"

  # Ensure CMake is using the same SDK we are using.
  args << "-DCMAKE_OSX_SYSROOT=#{MacOS.sdk_for_formula(self).path}" if MacOS.sdk_root_needed?

  args
end

#std_configure_args ⇒ Array<String>

Standard parameters for configure builds.

Returns:



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# File 'formula.rb', line 1625

def std_configure_args
  ["--disable-debug", "--disable-dependency-tracking", "--prefix=#{prefix}", "--libdir=#{lib}"]
end

#std_go_args(output: bin/name, ldflags: nil) ⇒ Array<String>

Standard parameters for Go builds.

Parameters:

Returns:



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# File 'formula.rb', line 1667

def std_go_args(output: bin/name, ldflags: nil)
  args = ["-trimpath", "-o=#{output}"]
  args += ["-ldflags=#{Array(ldflags).join(" ")}"] if ldflags
  args
end

#std_meson_args ⇒ Array<String>

Standard parameters for meson builds.

Returns:



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# File 'formula.rb', line 1689

def std_meson_args
  ["--prefix=#{prefix}", "--libdir=#{lib}", "--buildtype=release", "--wrap-mode=nofallback"]
end

#std_pip_args(prefix: self.prefix, build_isolation: false) ⇒ Array<String>

Standard parameters for pip builds.

Parameters:

  • prefix (String, Pathname, false) (defaults to: self.prefix)
  • build_isolation (Boolean) (defaults to: false)

Returns:



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# File 'formula.rb', line 1698

def std_pip_args(prefix: self.prefix, build_isolation: false)
  args = ["--verbose", "--no-deps", "--no-binary=:all:", "--ignore-installed", "--no-compile"]
  args << "--prefix=#{prefix}" if prefix
  args << "--no-build-isolation" unless build_isolation
  args
end

#supersedes_an_installed_formula? ⇒ Boolean

Is this formula the target of an alias used to install an old formula?

Returns:

  • (Boolean) 


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# File 'formula.rb', line 1539

def supersedes_an_installed_formula?
  old_installed_formulae.any?
end

#system(cmd, *args) ⇒ void

This method returns an undefined value.

To call out to the system, we use the system method and we prefer you give the args separately as in the line below, otherwise a subshell has to be opened first.

system "./bootstrap.sh", "--arg1", "--prefix=#{prefix}"

For CMake and other build systems we have some necessary defaults in e.g. #std_cmake_args:

system "cmake", ".", *std_cmake_args

If the arguments given to configure (or make or cmake) are depending on options defined above, we usually make a list first and then use the args << if <condition> to append each:

args = ["--with-option1", "--with-option2"]
args << "--without-gcc" if ENV.compiler == :clang

# Most software still uses `configure` and `make`.
# Check with `./configure --help` for what our options are.
system "./configure", "--disable-debug", "--disable-dependency-tracking",
                      "--disable-silent-rules", "--prefix=#{prefix}",
                      *args # our custom arg list (needs `*` to unpack)

# If there is a "make install" available, please use it!
system "make", "install"

Parameters:



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# File 'formula.rb', line 2636

def system(cmd, *args)
  verbose_using_dots = Homebrew::EnvConfig.verbose_using_dots?

  # remove "boring" arguments so that the important ones are more likely to
  # be shown considering that we trim long ohai lines to the terminal width
  pretty_args = args.dup
  unless verbose?
    case cmd
    when "./configure"
      pretty_args -= std_configure_args
    when "cabal"
      pretty_args -= std_cabal_v2_args
    when "cargo"
      pretty_args -= std_cargo_args
    when "cmake"
      pretty_args -= std_cmake_args
    when "go"
      pretty_args -= std_go_args
    when "meson"
      pretty_args -= std_meson_args
    when %r{(^|/)(pip|python)(?:[23](?:\.\d{1,2})?)?$}
      pretty_args -= std_pip_args
    end
  end
  pretty_args.each_index do |i|
    pretty_args[i] = "import setuptools..." if pretty_args[i].to_s.start_with? "import setuptools"
  end
  ohai "#{cmd} #{pretty_args * " "}".strip

  @exec_count ||= 0
  @exec_count += 1
  logfn = format("#{logs}/#{active_log_prefix}%02<exec_count>d.%<cmd_base>s",
                 exec_count: @exec_count,
                 cmd_base:   File.basename(cmd).split.first)
  logs.mkpath

  File.open(logfn, "w") do |log|
    log.puts Time.now, "", cmd, args, ""
    log.flush

    if verbose?
      rd, wr = IO.pipe
      begin
        pid = fork do
          rd.close
          log.close
          exec_cmd(cmd, args, wr, logfn)
        end
        wr.close

        if verbose_using_dots
          last_dot = Time.at(0)
          while (buf = rd.gets)
            log.puts buf
            # make sure dots printed with interval of at least 1 min.
            next if (Time.now - last_dot) <= 60

            print "."
            $stdout.flush
            last_dot = Time.now
          end
          puts
        else
          while (buf = rd.gets)
            log.puts buf
            puts buf
          end
        end
      ensure
        rd.close
      end
    else
      pid = fork do
        exec_cmd(cmd, args, log, logfn)
      end
    end

    Process.wait(T.must(pid))

    $stdout.flush

    unless $CHILD_STATUS.success?
      log_lines = Homebrew::EnvConfig.fail_log_lines

      log.flush
      if !verbose? || verbose_using_dots
        puts "Last #{log_lines} lines from #{logfn}:"
        Kernel.system "/usr/bin/tail", "-n", log_lines.to_s, logfn
      end
      log.puts

      require "system_config"
      require "build_environment"

      env = ENV.to_hash

      SystemConfig.dump_verbose_config(log)
      log.puts
      BuildEnvironment.dump env, log

      raise BuildError.new(self, cmd, args, env)
    end
  end
end

#systemd_service_path ⇒ Pathname

The generated systemd service file path.

Returns:



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# File 'formula.rb', line 1117

def systemd_service_path
  opt_prefix/"#{service_name}.service"
end

#systemd_timer_path ⇒ Pathname

The generated systemd timer file path.

Returns:



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# File 'formula.rb', line 1123

def systemd_timer_path
  opt_prefix/"#{service_name}.timer"
end

#time ⇒ Time

Creates a new Time object for use in the formula as the build time.

Returns:

See Also:



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# File 'formula.rb', line 1756

def time
  if ENV["SOURCE_DATE_EPOCH"].present?
    Time.at(ENV["SOURCE_DATE_EPOCH"].to_i).utc
  else
    Time.now.utc
  end
end

#to_s ⇒ Object 



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# File 'formula.rb', line 1613

def to_s
  name
end

#update_head_version ⇒ void

This method returns an undefined value.



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# File 'formula.rb', line 463

def update_head_version
  return unless head?

  head_spec = T.must(head)
  return unless head_spec.downloader.is_a?(VCSDownloadStrategy)
  return unless head_spec.downloader.cached_location.exist?

  path = if ENV["HOMEBREW_ENV"]
    ENV.fetch("PATH")
  else
    PATH.new(ORIGINAL_PATHS)
  end

  with_env(PATH: path) do
    head_spec.version.update_commit(head_spec.downloader.last_commit)
  end
end

#var ⇒ Pathname

The directory where the formula’s variable files should be installed. This directory is not inside the HOMEBREW_CELLAR so it persists across upgrades.

Returns:



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# File 'formula.rb', line 974

def var
  HOMEBREW_PREFIX/"var"
end

#version ⇒ Object

The version for the currently active SoftwareSpec. The version is autodetected from the URL and/or tag so only needs to be declared if it cannot be autodetected correctly.

See Also:



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# File 'formula.rb', line 454

delegate version: :active_spec

#versioned_formula? ⇒ Boolean

If this is a @-versioned formula.

Returns:

  • (Boolean) 


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# File 'formula.rb', line 489

def versioned_formula?
  name.include?("@")
end

#versioned_formulae ⇒ Array<Formula>

Returns any @-versioned Formula objects for any Formula (including versioned formulae).

Returns:



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# File 'formula.rb', line 514

def versioned_formulae
  versioned_formulae_names.map do |name|
    Formula[name]
  rescue FormulaUnavailableError
    nil
  end.compact.sort_by(&:version).reverse
end

#versioned_formulae_names ⇒ Array<String>

Returns any other @-versioned formulae names for any formula (including versioned formulae).

Returns:



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# File 'formula.rb', line 495

def versioned_formulae_names
  versioned_names = if tap
    name_prefix = name.gsub(/(@[\d.]+)?$/, "")
    T.must(tap).prefix_to_versioned_formulae_names.fetch(name_prefix, [])
  elsif path.exist?
    Pathname.glob(path.to_s.gsub(/(@[\d.]+)?\.rb$/, "@*.rb"))
            .map { |path| path.basename(".rb").to_s }
            .sort
  else
    raise "Either tap or path is required to list versioned formulae"
  end

  versioned_names.reject do |versioned_name|
    versioned_name == name
  end
end

#with_logging(log_type) ⇒ Object

Runs a block with the given log type in effect for its duration.



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# File 'formula.rb', line 1050

def with_logging(log_type)
  old_log_type = @active_log_type
  @active_log_type = log_type
  yield
ensure
  @active_log_type = old_log_type
end

#xcodebuild(*args) ⇒ void

This method returns an undefined value.

Runs xcodebuild without Homebrew’s compiler environment variables set.

Parameters:



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# File 'formula.rb', line 2801

def xcodebuild(*args)
  removed = ENV.remove_cc_etc

  begin
    T.unsafe(self).system("xcodebuild", *args)
  ensure
    ENV.update(removed)
  end
end

#zsh_completion ⇒ Pathname

The directory where the formula’s zsh completion files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 1010

def zsh_completion
  share/"zsh/site-functions"
end

#zsh_function ⇒ Pathname

The directory where the formula’s zsh function files should be installed. This is symlinked into HOMEBREW_PREFIX after installation or with brew link for formulae that are not keg-only.

Returns:



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# File 'formula.rb', line 983

def zsh_function
  share/"zsh/site-functions"
end