Class: Formula Abstract

Inherits:
Object
  • Object
show all
Extended by:
BuildEnvironment::DSL, Cachable, Enumerable, Forwardable, Predicable, T::Sig
Includes:
Context, FileUtils, Utils::Inreplace, Utils::Shebang, Utils::Shell
Defined in:
brew/Library/Homebrew/extend/os/mac/formula.rb,
brew/Library/Homebrew/extend/os/linux/formula.rb,
brew/Library/Homebrew/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 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 BuildEnvironment::DSL

env

Methods included from Predicable

attr_predicate

Methods included from Cachable

cache, clear_cache

Methods included from Context

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

Methods included from Utils::Shell

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

Methods included from Utils::Shebang

rewrite_shebang

Methods included from Utils::Inreplace

inreplace, inreplace_pairs

Class Attribute Details

.bottle(*args, &block) ⇒ Object

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.
  prefix "/opt/homebrew" # Optional HOMEBREW_PREFIX in which the bottles were built.
  cellar "/opt/homebrew/Cellar" # Optional HOMEBREW_CELLAR in which the bottles were built.
  rebuild 1 # Marks the old bottle as outdated without bumping the version/revision of the formula.
  sha256 "ef65c759c5097a36323fa9c77756468649e8d1980a3a4e05695c05e39568967c" => :catalina
  sha256 "28f4090610946a4eb207df102d841de23ced0d06ba31cb79e040d883906dcd4f" => :mojave
  sha256 "91dd0caca9bd3f38c439d5a7b6f68440c4274945615fae035ff0a369264b8a2f" => :high_sierra
end

Only formulae where the upstream URL breaks or moves frequently, require compiling or have a reasonable amount of patches/resources should be bottled. Formulae which do not meet the above requirements should not be bottled.

Formulae which should not be bottled and can be installed without any compile required should be tagged with:

bottle :unneeded

Otherwise formulae which do not meet the above requirements and should not be bottled should be tagged with:

bottle :disable, "reasons"

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 2441

def bottle(*args, &block)
  stable.bottle(*args, &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 'brew/Library/Homebrew/formula.rb', line 2599

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


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# File 'brew/Library/Homebrew/formula.rb', line 2815

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 'brew/Library/Homebrew/formula.rb', line 2264

attr_rw :desc

.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:



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# File 'brew/Library/Homebrew/formula.rb', line 2845

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 'brew/Library/Homebrew/formula.rb', line 2491

def head(val = nil, specs = {}, &block)
  @head ||= HeadSoftwareSpec.new(flags: build_flags)
  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 'brew/Library/Homebrew/formula.rb', line 2305

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 'brew/Library/Homebrew/formula.rb', line 2289

def license(args = nil)
  if args.nil?
    @licenses
  else
    odisabled "`license [...]`", "`license any_of: [...]`" if args.is_a? Array
    @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 'brew/Library/Homebrew/formula.rb', line 2766

def livecheck(&block)
  @livecheck ||= Livecheck.new(self)
  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 'brew/Library/Homebrew/formula.rb', line 2393

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 'brew/Library/Homebrew/formula.rb', line 2590

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 'brew/Library/Homebrew/formula.rb', line 2335

attr_rw :revision

.sha256=(value) ⇒ Object (writeonly)

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 'brew/Library/Homebrew/formula.rb', line 2405

Checksum::TYPES.each do |type|
  define_method(type) { |val| stable.send(type, 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 preferrable 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 'brew/Library/Homebrew/formula.rb', line 2472

def stable(&block)
  @stable ||= SoftwareSpec.new(flags: build_flags)
  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 inferrable, 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 'brew/Library/Homebrew/formula.rb', line 2370

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 'brew/Library/Homebrew/formula.rb', line 2380

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 'brew/Library/Homebrew/formula.rb', line 2347

attr_rw :version_scheme

Instance Attribute Details

#alias_name ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 89

def alias_name
  @alias_name
end

#alias_path ⇒ Object (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



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# File 'brew/Library/Homebrew/formula.rb', line 85

def alias_path
  @alias_path
end

#build ⇒ BuildOptions

The BuildOptions 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 'brew/Library/Homebrew/formula.rb', line 174

def build
  @build
end

#buildpath ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 153

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 'brew/Library/Homebrew/formula.rb', line 180

def follow_installed_alias
  @follow_installed_alias
end

#full_alias_name ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 99

def full_alias_name
  @full_alias_name
end

#full_name ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 94

def full_name
  @full_name
end

#name ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 81

def name
  @name
end

#path ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 103

def path
  @path
end

#revision ⇒ Object (readonly)

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

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 145

def revision
  @revision
end

#testpath ⇒ Object (readonly)

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



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# File 'brew/Library/Homebrew/formula.rb', line 157

def testpath
  @testpath
end

#version_scheme ⇒ Object (readonly)

Used to change version schemes for packages.

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 149

def version_scheme
  @version_scheme
end

Class Method Details

.[](name) ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1603

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 'brew/Library/Homebrew/formula.rb', line 2660

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 'brew/Library/Homebrew/formula.rb', line 2689

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 dependencies for stuff that requires certain extra handling (often changing some ENV vars or deciding if to use the system provided version or not).

# `:build` means this dep is only needed during build.
depends_on "cmake" => :build
# `: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 with `--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.
depends_on x11: :optional # X11/XQuartz components.
depends_on :osxfuse # Permits the use of the upstream signed binary or our cask.
depends_on :tuntap # Does the same thing as above. This is vital for Yosemite and later.
# It is possible to only depend on something if
# `build.with?` or `build.without? "another_formula"`:
depends_on "postgresql" if build.without? "sqlite"
# Require Python if `--with-python` is passed to `brew install example`:
depends_on "python" => :optional


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# File 'brew/Library/Homebrew/formula.rb', line 2549

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

.deprecate!(date: nil, because: nil) ⇒ Object

Deprecates a Formula (on a given date, if provided) 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"


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# File 'brew/Library/Homebrew/formula.rb', line 2796

def deprecate!(date: nil, because: nil)
  odeprecated "`deprecate!` without a reason", "`deprecate! because: \"reason\"`" if because.blank?

  return if date.present? && Date.parse(date) > Date.today

  @deprecation_reason = because if because.present?
  @deprecated = true
end

.deprecated? ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 2808

def deprecated?
  @deprecated == true
end

.disable!(date: nil, because: nil) ⇒ Object

Disables a Formula (on a given date, if provided) 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"


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# File 'brew/Library/Homebrew/formula.rb', line 2822

def disable!(date: nil, because: nil)
  odeprecated "`disable!` without a reason", "`disable! because: \"reason\"`" if because.blank?

  if date.present? && Date.parse(date) > Date.today
    @deprecation_reason = because if because.present?
    @deprecated = true
    return
  end

  @disable_reason = because if because.present?
  @disabled = true
end

.disabled? ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 2838

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 'brew/Library/Homebrew/formula.rb', line 2714

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

.go_resource(name, &block) ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 2515

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

.ignore_missing_libraries ⇒ Object

Raises:



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

def ignore_missing_libraries(*libs)
  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

.installed_with_alias_path(alias_path) ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1555

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 will only live in its Cellar. Other formulae can depend on it and then brew will add the necessary includes and libs (etc.) during the brewing of that other formula. But generally, keg-only formulae are not in your PATH and 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 "because I want it so"


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# File 'brew/Library/Homebrew/formula.rb', line 2684

def keg_only(reason, explanation = "")
  @keg_only_reason = KegOnlyReason.new(reason, explanation)
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 'brew/Library/Homebrew/formula.rb', line 2310

def livecheckable?
  @livecheckable == true
end

.needs(*standards) ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 2718

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

.on_linux(&block) ⇒ Object

Block only executed on Linux. No-op on macOS.

on_linux do
  depends_on "linux_only_dep"
end


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# File 'brew/Library/Homebrew/formula.rb', line 2572

def on_linux(&block)
  raise "No block content defined for on_linux block" unless block

  yield
end

.on_macos(&block) ⇒ Object

Block only executed on macOS. No-op on Linux.

on_macos do
  depends_on "mac_only_dep"
end


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# File 'brew/Library/Homebrew/formula.rb', line 2564

def on_macos(&block)
  raise "No block content defined for on_macos block" unless block

  yield
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 'brew/Library/Homebrew/formula.rb', line 2634

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

.plist_options(options) ⇒ Object

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 'brew/Library/Homebrew/formula.rb', line 2648

def plist_options(options)
  @plist_startup = options[:startup]
  @plist_manual = options[:manual]
end

.pour_bottle?(&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.

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 2786

def pour_bottle?(&block)
  @pour_bottle_check = PourBottleCheck.new(self)
  @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 'brew/Library/Homebrew/formula.rb', line 2509

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

.skip_clean(*paths) ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 2665

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 'brew/Library/Homebrew/formula.rb', line 2750

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). On Linux this will act as depends_on.



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# File 'brew/Library/Homebrew/formula.rb', line 2556

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 'brew/Library/Homebrew/formula.rb', line 889

def active_log_prefix
  if active_log_type
    "#{active_log_type}."
  else
    ""
  end
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 'brew/Library/Homebrew/formula.rb', line 1316

def alias_changed?
  installed_alias_target_changed? || supersedes_an_installed_formula?
end

#aliases ⇒ Object

All aliases for the formula.



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# File 'brew/Library/Homebrew/formula.rb', line 442

def aliases
  @aliases ||= if tap
    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 'brew/Library/Homebrew/formula.rb', line 1658

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 



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# File 'brew/Library/Homebrew/formula.rb', line 1666

def any_installed_version
  any_installed_keg&.version
end

#bash_completion ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 853

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

#bin ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 628

def bin
  prefix/"bin"
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 'brew/Library/Homebrew/formula.rb', line 1087

def caveats
  nil
end

#current_installed_alias_target ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1296

def current_installed_alias_target
  Formulary.factory(installed_alias_path) if installed_alias_path
end

#deprecated? ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 1162

delegate deprecated?: :"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:



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# File 'brew/Library/Homebrew/formula.rb', line 1168

delegate deprecation_reason: :"self.class"

#desc ⇒ Object

The description of the software.

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 359

delegate desc: :"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:



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# File 'brew/Library/Homebrew/formula.rb', line 1180

delegate disable_reason: :"self.class"

#disabled? ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 1174

delegate disabled?: :"self.class"

#doc ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 635

def doc
  share/"doc"/name
end

#elisp ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 789

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

#etc ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 814

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

#fetch_patches ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 2153

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

#fish_completion ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 869

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

#fish_function ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 845

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

#frameworks ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 797

def frameworks
  prefix/"Frameworks"
end

#full_installed_alias_name ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 292

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 'brew/Library/Homebrew/formula.rb', line 317

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 'brew/Library/Homebrew/formula.rb', line 307

def full_specified_name
  full_alias_name || full_name
end

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 531

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 < stable.version
  return false unless fetch_head
  return false unless head&.downloader.is_a?(VCSDownloadStrategy)

  downloader = 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 'brew/Library/Homebrew/formula.rb', line 369

delegate homepage: :"self.class"

#include ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 645

def include
  prefix/"include"
end

#info ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 652

def info
  share/"info"
end

#inreplace(paths, before = nil, after = nil) ⇒ Object

Actually implemented in Utils::Inreplace.inreplace. 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 variable defined by the formula. Only HOMEBREW_PREFIX is available in the embedded patch.

inreplace supports regular expressions:

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

See Also:




# File 'brew/Library/Homebrew/formula.rb', line 67

#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 'brew/Library/Homebrew/formula.rb', line 1919

def install; end

#installed_alias_name ⇒ String?

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 288

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 'brew/Library/Homebrew/formula.rb', line 279

def installed_alias_path
  path = build.source["path"] if build.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 'brew/Library/Homebrew/formula.rb', line 1302

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 'brew/Library/Homebrew/formula.rb', line 312

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 'brew/Library/Homebrew/formula.rb', line 1094

def keg_only?
  return false unless keg_only_reason

  keg_only_reason.applicable?
end

#kext_prefix ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 805

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 'brew/Library/Homebrew/formula.rb', line 1322

def latest_formula
  installed_alias_target_changed? ? current_installed_alias_target : self
end

#latest_head_prefix ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 526

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 'brew/Library/Homebrew/formula.rb', line 515

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

#lib ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 662

def lib
  prefix/"lib"
end

#libexec ⇒ Object

The directory where the formula’s binaries should be installed. This is not symlinked into HOMEBREW_PREFIX. It is also 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.



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# File 'brew/Library/Homebrew/formula.rb', line 671

def libexec
  prefix/"libexec"
end

#license ⇒ Object

The SPDX ID of the software license.

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 364

delegate license: :"self.class"

#linked? ⇒ Boolean

Is the formula linked?

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 573

def linked?
  linked_keg.symlink?
end

#linked_version ⇒ Object

PkgVersion of the linked keg for the formula.



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# File 'brew/Library/Homebrew/formula.rb', line 590

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 'brew/Library/Homebrew/formula.rb', line 374

delegate livecheck: :"self.class"

#livecheckable? ⇒ Object

Is a livecheck specification defined for the software?

See Also:



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# File 'brew/Library/Homebrew/formula.rb', line 379

delegate livecheckable?: :"self.class"

#man ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 680

def man
  share/"man"
end

#man1 ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 690

def man1
  man/"man1"
end

#man2 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 697

def man2
  man/"man2"
end

#man3 ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 707

def man3
  man/"man3"
end

#man4 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 714

def man4
  man/"man4"
end

#man5 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 721

def man5
  man/"man5"
end

#man6 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 728

def man6
  man/"man6"
end

#man7 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 735

def man7
  man/"man7"
end

#man8 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 742

def man8
  man/"man8"
end

#migration_needed? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 1244

def migration_needed?
  return false unless oldname
  return false if rack.exist?

  old_rack = HOMEBREW_CELLAR/oldname
  return false unless old_rack.directory?
  return false if old_rack.subdirs.empty?

  tap == Tab.for_keg(old_rack.subdirs.min).tap
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 'brew/Library/Homebrew/formula.rb', line 1727

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 'brew/Library/Homebrew/formula.rb', line 2134

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 'brew/Library/Homebrew/formula.rb', line 2128

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

#new_formula_available? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 1292

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

#old_installed_formulae ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1326

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 ⇒ Object

An old name for the formula.



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# File 'brew/Library/Homebrew/formula.rb', line 434

def oldname
  @oldname ||= if tap
    formula_renames = tap.formula_renames
    formula_renames.to_a.rassoc(name).first if formula_renames.value?(name)
  end
end

#on_linux(&block) ⇒ Object

Block only executed on Linux. No-op on macOS.

on_linux do
# Do something Linux-specific
end


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# File 'brew/Library/Homebrew/formula.rb', line 1404

def on_linux(&block)
  raise "No block content defined for on_linux block" unless block

  yield
end

#on_macos(&block) ⇒ Object

Block only executed on macOS. No-op on Linux.

on_macos do
# Do something Mac-specific
end


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# File 'brew/Library/Homebrew/formula.rb', line 1396

def on_macos(&block)
  raise "No block content defined for on_macos block" unless block

  yield
end

#opt_bin ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 967

def opt_bin
  opt_prefix/"bin"
end

#opt_elisp ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 1002

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

#opt_frameworks ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 1007

def opt_frameworks
  opt_prefix/"Frameworks"
end

#opt_include ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 972

def opt_include
  opt_prefix/"include"
end

#opt_lib ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 977

def opt_lib
  opt_prefix/"lib"
end

#opt_libexec ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 982

def opt_libexec
  opt_prefix/"libexec"
end

#opt_pkgshare ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 997

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 'brew/Library/Homebrew/formula.rb', line 962

def opt_prefix
  HOMEBREW_PREFIX/"opt"/name
end

#opt_sbin ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 987

def opt_sbin
  opt_prefix/"sbin"
end

#opt_share ⇒ Pathname

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 992

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 'brew/Library/Homebrew/formula.rb', line 485

delegate option_defined?: :active_spec

#optlinked? ⇒ Boolean

Is the formula linked to opt?

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 578

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 'brew/Library/Homebrew/formula.rb', line 406

def pkg_version
  PkgVersion.new(version, revision)
end

#pkgetc ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 822

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

#pkgshare ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 780

def pkgshare
  prefix/"share"/name
end

#plist ⇒ Object

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 'brew/Library/Homebrew/formula.rb', line 932

def plist
  nil
end

#plist_name ⇒ String

The generated launchd #plist service name.

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 938

def plist_name
  "homebrew.mxcl.#{name}"
end

#plist_path ⇒ Pathname

The generated launchd #plist file path.

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 944

def plist_path
  prefix/"#{plist_name}.plist"
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 'brew/Library/Homebrew/formula.rb', line 1027

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 'brew/Library/Homebrew/formula.rb', line 1018

def pour_bottle?
  true
end

#prefix(v = 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 'brew/Library/Homebrew/formula.rb', line 562

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

#prefix_linked?(v = pkg_version) ⇒ Boolean

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

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 583

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

  linked_keg.resolved_path == versioned_prefix(v)
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 'brew/Library/Homebrew/formula.rb', line 431

delegate resource: :active_spec

#resources ⇒ Object

The Resources for the currently active SoftwareSpec.



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# File 'brew/Library/Homebrew/formula.rb', line 454

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

#runtime_installed_formula_dependents ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1708

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 ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 750

def sbin
  prefix/"sbin"
end

#share ⇒ Object

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"


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# File 'brew/Library/Homebrew/formula.rb', line 769

def share
  prefix/"share"
end

#shared_library(name, version = nil) ⇒ Object 



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# File 'brew/Library/Homebrew/extend/os/linux/formula.rb', line 15

def shared_library(name, version = nil)
  "#{name}.so#{"." unless version.nil?}#{version}"
end

#skip_cxxstdlib_check? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 1183

def skip_cxxstdlib_check?
  false
end

#specified_name ⇒ Object

The name specified to find this formula.



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# File 'brew/Library/Homebrew/formula.rb', line 302

def specified_name
  alias_name || name
end

#specified_path ⇒ Object

The path that was specified to find this formula.



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# File 'brew/Library/Homebrew/formula.rb', line 297

def specified_path
  alias_path || path
end

#std_cabal_v2_args ⇒ Array<String>

Standard parameters for cabal-v2 builds.

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 1449

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 ⇒ Object

Standard parameters for cargo builds.



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# File 'brew/Library/Homebrew/formula.rb', line 1409

def std_cargo_args
  ["--locked", "--root", prefix, "--path", "."]
end

#std_cmake_args ⇒ Array<String>

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. Note that there isn’t a std_autotools variant because autotools is a lot less consistent and the standard parameters are more memorable.

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 1420

def std_cmake_args
  args = %W[
    -DCMAKE_C_FLAGS_RELEASE=-DNDEBUG
    -DCMAKE_CXX_FLAGS_RELEASE=-DNDEBUG
    -DCMAKE_INSTALL_PREFIX=#{prefix}
    -DCMAKE_INSTALL_LIBDIR=lib
    -DCMAKE_BUILD_TYPE=Release
    -DCMAKE_FIND_FRAMEWORK=LAST
    -DCMAKE_VERBOSE_MAKEFILE=ON
    -Wno-dev
  ]

  # 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_go_args ⇒ Object

Standard parameters for Go builds.



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# File 'brew/Library/Homebrew/formula.rb', line 1443

def std_go_args
  ["-trimpath", "-o", bin/name]
end

#std_meson_args ⇒ Array<String>

Standard parameters for meson builds.

Returns:



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# File 'brew/Library/Homebrew/formula.rb', line 1463

def std_meson_args
  ["--prefix=#{prefix}", "--libdir=#{lib}", "--buildtype=release", "--wrap-mode=nofallback"]
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 'brew/Library/Homebrew/formula.rb', line 1310

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 we have some necessary defaults in #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 'brew/Library/Homebrew/formula.rb', line 1986

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 -= %w[--disable-dependency-tracking --disable-debug --disable-silent-rules]
    when "cargo"
      pretty_args -= std_cargo_args
    when "cmake"
      pretty_args -= std_cmake_args
    when "go"
      pretty_args -= std_go_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 unless (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, 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

#to_s ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 1382

def to_s
  name
end

#update_head_version ⇒ Object 



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# File 'brew/Library/Homebrew/formula.rb', line 388

def update_head_version
  return unless head?
  return unless head.downloader.is_a?(VCSDownloadStrategy)
  return unless head.downloader.cached_location.exist?

  path = if ENV["HOMEBREW_ENV"]
    ENV["PATH"]
  else
    ENV["HOMEBREW_PATH"]
  end

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

#var ⇒ Object

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



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# File 'brew/Library/Homebrew/formula.rb', line 829

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 'brew/Library/Homebrew/formula.rb', line 386

delegate version: :active_spec

#versioned_formula? ⇒ Boolean

If this is a @-versioned formula.

Returns:

  • (Boolean) 


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# File 'brew/Library/Homebrew/formula.rb', line 411

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

#versioned_formulae ⇒ Object

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



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# File 'brew/Library/Homebrew/formula.rb', line 416

def versioned_formulae
  Pathname.glob(path.to_s.gsub(/(@[\d.]+)?\.rb$/, "@*.rb")).map do |versioned_path|
    next if versioned_path == path

    Formula[versioned_path.basename(".rb").to_s]
  rescue FormulaUnavailableError
    nil
  end.compact.sort_by(&:version).reverse
end

#with_logging(log_type) ⇒ Object

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



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# File 'brew/Library/Homebrew/formula.rb', line 898

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 'brew/Library/Homebrew/formula.rb', line 2143

def xcodebuild(*args)
  removed = ENV.remove_cc_etc

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

#zsh_completion ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 861

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

#zsh_function ⇒ Object

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.



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# File 'brew/Library/Homebrew/formula.rb', line 837

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