c524895666
New `depends_on :python` Dependency.
New `depends_on :python3` Dependency.
To avoid having multiple formulae with endings -py2 and -py3,
we will handle support for different pythons (2.x vs. 3.x)
in the same formula.
Further brewed vs. external python will be transparently supported.
The formula also gets a new object `python`, which is false if
no Python is available or the user has disabled it. Otherwise
it is defined and provides several support methods:
python.site_packages # the site-packages in the formula's Cellar
python.global_site_packages
python.binary # the full path to the python binary
python.prefix
python.version
python.version.major
python.version.minor
python.xy # => e.g. "python2.7"
python.incdir # includes of python
python.libdir # the python dylib library
python.pkg_config_path # used internally by brew
python.from_osx?
python.framework?
python.universal?
python.pypy?
python.standard_caveats # Text to set PYTHONPATH for python.from_osx?
python.if3then3 # => "" for 2.x and to "3" for 3.x.
Further, to avoid code duplication, `python` takes an optional
block that is run twice if the formula defines depends_on
:python AND :python3.
python do
system python, 'setup.py', "--prefix=#{prefix}"
end
Read more in the Homebrew wiki.
52 lines
1.8 KiB
Ruby
52 lines
1.8 KiB
Ruby
require 'requirement'
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class LanguageModuleDependency < Requirement
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fatal true
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def initialize language, module_name, import_name=module_name
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@language = language
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@module_name = module_name
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@import_name = import_name
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super([language, module_name, import_name])
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end
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satisfy { quiet_system(*the_test) }
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def message; <<-EOS.undent
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Unsatisfied dependency: #{@module_name}
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Homebrew does not provide #{@language.to_s.capitalize} dependencies; install with:
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#{command_line} #{@module_name}
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EOS
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end
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def the_test
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case @language
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when :chicken then %W{/usr/bin/env csi -e (use\ #{@import_name})}
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when :jruby then %W{/usr/bin/env jruby -rubygems -e require\ '#{@import_name}'}
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when :lua then %W{/usr/bin/env luarocks show #{@import_name}}
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when :node then %W{/usr/bin/env node -e require('#{@import_name}');}
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when :ocaml then %W{/usr/bin/env opam list #{@import_name} | grep #{@import_name}}
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when :perl then %W{/usr/bin/env perl -e use\ #{@import_name}}
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when :python then %W{/usr/bin/env python2 -c import\ #{@import_name}}
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when :python3 then %W{/usr/bin/env python3 -c import\ #{@import_name}}
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when :ruby then %W{/usr/bin/env ruby -rubygems -e require\ '#{@import_name}'}
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when :rbx then %W{/usr/bin/env rbx -rubygems -e require\ '#{@import_name}'}
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end
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end
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def command_line
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case @language
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when :chicken then "chicken-install"
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when :jruby then "jruby -S gem install"
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when :lua then "luarocks install"
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when :node then "npm install"
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when :ocaml then "opam install"
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when :perl then "cpan -i"
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when :python then "pip install"
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when :python3 then "pip3 install"
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when :rbx then "rbx gem install"
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when :ruby then "gem install"
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end
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end
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end
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