Module: PyPI Private

Defined in:
utils/pypi.rb

Overview

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Helper functions for updating PyPI resources.

Defined Under Namespace

Classes: Package

Class Method Summary collapse

Class Method Details

.normalize_python_package(name) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'utils/pypi.rb', line 345

def self.normalize_python_package(name)
  # This normalization is defined in the PyPA packaging specifications;
  # https://packaging.python.org/en/latest/specifications/name-normalization/#name-normalization
  name.gsub(/[-_.]+/, "-").downcase
end

.pip_report(packages) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'utils/pypi.rb', line 351

def self.pip_report(packages)
  return [] if packages.blank?

  command = [Formula["python"].bin/"python3", "-m", "pip", "install", "-q", "--dry-run",
             "--ignore-installed", "--report=/dev/stdout", *packages.map(&:to_s)]
  pip_output = Utils.popen_read({ "PIP_REQUIRE_VIRTUALENV" => "false" }, *command)
  unless $CHILD_STATUS.success?
    odie <<~EOS
      Unable to determine dependencies for "#{packages.join(" ")}" because of a failure when running
      `#{command.join(" ")}`.
      Please update the resources manually.
    EOS
  end
  pip_report_to_packages(JSON.parse(pip_output)).uniq
end

.pip_report_to_packages(report) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'utils/pypi.rb', line 367

def self.pip_report_to_packages(report)
  return [] if report.blank?

  report["install"].map do |package|
    name = normalize_python_package(package["metadata"]["name"])
    version = package["metadata"]["version"]

    Package.new "#{name}==#{version}"
  end.compact
end

.update_pypi_url(url, version) ⇒ String?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Parameters:

Returns:



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# File 'utils/pypi.rb', line 181

def self.update_pypi_url(url, version)
  package = Package.new url, is_url: true

  return unless package.valid_pypi_package?

  _, url = package.pypi_info(new_version: version)
  url
rescue ArgumentError
  nil
end

.update_python_resources!(formula, version: nil, package_name: nil, extra_packages: nil, exclude_packages: nil, print_only: false, silent: false, ignore_non_pypi_packages: false) ⇒ Boolean?

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Return true if resources were checked (even if no change).

Parameters:

  • formula (Formula)
  • version (String, nil) (defaults to: nil)
  • package_name (String, nil) (defaults to: nil)
  • extra_packages (Array<String>, nil) (defaults to: nil)
  • exclude_packages (Array<String>, nil) (defaults to: nil)
  • print_only (Boolean, nil) (defaults to: false)
  • silent (Boolean, nil) (defaults to: false)
  • ignore_non_pypi_packages (Boolean, nil) (defaults to: false)

Returns:

  • (Boolean, nil) 


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# File 'utils/pypi.rb', line 205

def self.update_python_resources!(formula, version: nil, package_name: nil, extra_packages: nil,
                                  exclude_packages: nil, print_only: false, silent: false,
                                  ignore_non_pypi_packages: false)

  auto_update_list = formula.tap&.pypi_formula_mappings
  if auto_update_list.present? && auto_update_list.key?(formula.full_name) &&
     package_name.blank? && extra_packages.blank? && exclude_packages.blank?

    list_entry = auto_update_list[formula.full_name]
    case list_entry
    when false
      unless print_only
        odie "The resources for \"#{formula.name}\" need special attention. Please update them manually."
      end
    when String
      package_name = list_entry
    when Hash
      package_name = list_entry["package_name"]
      extra_packages = list_entry["extra_packages"]
      exclude_packages = list_entry["exclude_packages"]
    end
  end

  main_package = if package_name.present?
    Package.new(package_name)
  else
    stable = T.must(formula.stable)
    url = if stable.specs[:tag].present?
      url = "git+#{stable.url}@#{stable.specs[:tag]}"
    else
      stable.url
    end
    Package.new(url, is_url: true)
  end

  if version.present?
    if main_package.valid_pypi_package?
      main_package.version = version
    else
      return if ignore_non_pypi_packages

      odie "The main package is not a PyPI package, meaning that version-only updates cannot be \
        performed. Please update its URL manually."
    end
  end

  extra_packages = (extra_packages || []).map { |p| Package.new p }
  exclude_packages = (exclude_packages || []).map { |p| Package.new p }
  exclude_packages += %w[argparse pip setuptools wsgiref].map { |p| Package.new p }
  # remove packages from the exclude list if we've explicitly requested them as an extra package
  exclude_packages.delete_if { |package| extra_packages.include?(package) }

  input_packages = [main_package]
  extra_packages.each do |extra_package|
    if !extra_package.valid_pypi_package? && !ignore_non_pypi_packages
      odie "\"#{extra_package}\" is not available on PyPI."
    end

    input_packages.each do |existing_package|
      if existing_package.same_package?(extra_package) && existing_package.version != extra_package.version
        odie "Conflicting versions specified for the `#{extra_package.name}` package: " \
             "#{existing_package.version}, #{extra_package.version}"
      end
    end

    input_packages << extra_package unless input_packages.include? extra_package
  end

  formula.resources.each do |resource|
    if !print_only && !resource.url.start_with?(PYTHONHOSTED_URL_PREFIX)
      odie "\"#{formula.name}\" contains non-PyPI resources. Please update the resources manually."
    end
  end

  ensure_formula_installed!("python")

  # Resolve the dependency tree of all input packages
  ohai "Retrieving PyPI dependencies for \"#{input_packages.join(" ")}\"..." if !print_only && !silent
  found_packages = pip_report(input_packages)
  # Resolve the dependency tree of excluded packages to prune the above
  exclude_packages.delete_if { |package| found_packages.exclude? package }
  ohai "Retrieving PyPI dependencies for excluded \"#{exclude_packages.join(" ")}\"..." if !print_only && !silent
  exclude_packages = pip_report(exclude_packages) + [Package.new(main_package.name)]

  new_resource_blocks = ""
  found_packages.sort.each do |package|
    if exclude_packages.include? package
      ohai "Excluding \"#{package}\"" if !print_only && !silent
      next
    end

    ohai "Getting PyPI info for \"#{package}\"" if !print_only && !silent
    name, url, checksum = package.pypi_info
    # Fail if unable to find name, url or checksum for any resource
    if name.blank?
      odie "Unable to resolve some dependencies. Please update the resources for \"#{formula.name}\" manually."
    elsif url.blank? || checksum.blank?
      odie <<~EOS
        Unable to find the URL and/or sha256 for the "#{name}" resource.
        Please update the resources for "#{formula.name}" manually.
      EOS
    end

    # Append indented resource block
    new_resource_blocks += <<-EOS
resource "#{name}" do
  url "#{url}"
  sha256 "#{checksum}"
end

    EOS
  end

  if print_only
    puts new_resource_blocks.chomp
    return
  end

  # Check whether resources already exist (excluding virtualenv dependencies)
  if formula.resources.all? { |resource| resource.name.start_with?("homebrew-") }
    # Place resources above install method
    inreplace_regex = /  def install/
    new_resource_blocks += "  def install"
  else
    # Replace existing resource blocks with new resource blocks
    inreplace_regex = /  (resource .* do\s+url .*\s+sha256 .*\s+ end\s*)+/
    new_resource_blocks += "  "
  end

  ohai "Updating resource blocks" unless silent
  Utils::Inreplace.inreplace formula.path do |s|
    if s.inreplace_string.scan(inreplace_regex).length > 1
      odie "Unable to update resource blocks for \"#{formula.name}\" automatically. Please update them manually."
    end
    s.sub! inreplace_regex, new_resource_blocks
  end

  true
end