nixpkgs/pkgs/development/interpreters/ruby/gem.nix

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{ lib, ruby, rubygemsFun, fetchurl, makeWrapper, git } @ defs:
lib.makeOverridable (
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{ name
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, ruby ? defs.ruby
, rubygems ? (rubygemsFun ruby)
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, stdenv ? ruby.stdenv
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, namePrefix ? "${ruby.name}" + "-"
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, buildInputs ? []
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, doCheck ? false
, dontBuild ? true
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, meta ? {}
, gemPath ? []
, ...} @ attrs:
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stdenv.mkDerivation (attrs // {
inherit ruby rubygems;
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inherit doCheck;
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buildInputs = [ rubygems makeWrapper git ] ++ buildInputs;
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name = namePrefix + name;
src = if attrs ? src
then attrs.src
else fetchurl {
url = "http://rubygems.org/downloads/${attrs.name}.gem";
inherit (attrs) sha256;
};
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# The source is expected to either be a gem package or a directory.
#
# - Gem packages are already built, so they don't even need to be unpacked.
# They will skip the buildPhase.
# - A directory containing the sources will need to go through all of the
# usual phases.
unpackPhase= ''
gemRegex="\.gem"
if [[ $src =~ $gemRegex ]]
then
runHook preUnpack
echo "Source is a gem package, won't unpack."
gempkg=$src
dontBuild=1
runHook postUnpack
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else
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# Fall back to the original thing for everything else.
unpackPhase
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fi
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'';
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checkPhase = "true";
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buildPhase = ''
runHook preBuild
# TODO: Investigate. The complete working tree is touched by fetchgit.
if [ -d .git ]; then
git reset
fi
gemspec=`find . -name '*.gemspec'`
output=`gem build $gemspec`
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gem build $gemspec | tee .output
gempkg=`cat .output | grep -oP 'File: \K(.*)'`
rm .output
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echo "Gem package built: $gempkg"
runHook postBuild
'';
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installPhase = ''
runHook preInstall
# NOTE: This does NOT build the unpacked gem, but installs $src directly.
# Gems that have not been downloaded from rubygems.org may need a
# separate buildPhase.
# --ignore-dependencies is necessary as rubygems otherwise always
# connects to the repository, thus breaking pure builds.
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GEM_HOME=$out/${ruby.gemPath} \
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gem install \
--local \
--force \
--http-proxy "http://nodtd.invalid" \
--ignore-dependencies \
--build-root "/" \
--backtrace \
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$gempkg $gemFlags -- $buildFlags
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rm -frv $out/${ruby.gemPath}/cache # don't keep the .gem file here
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mkdir -p $out/bin
for prog in $out/${ruby.gemPath}/gems/*/bin/*; do
makeWrapper $prog $out/bin/$(basename $prog) \
--prefix GEM_PATH : "$out/${ruby.gemPath}:$GEM_PATH" \
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--prefix RUBYLIB : "${rubygems}/lib" \
--set RUBYOPT rubygems \
$extraWrapperFlags ''${extraWrapperFlagsArray[@]}
done
# looks like useless files which break build repeatability and consume space
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rm -fv $out/${ruby.gemPath}/doc/*/*/created.rid || true
rm -fv $out/${ruby.gemPath}/gems/*/ext/*/mkmf.log || true
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mkdir -p $out/nix-support
cat > $out/nix-support/setup-hook <<EOF
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if [[ "\$GEM_PATH" != *$out* ]]; then
addToSearchPath GEM_PATH $out/${ruby.gemPath}
fi
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EOF
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runHook postInstall
'';
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propagatedBuildInputs = gemPath;
propagatedUserEnvPkgs = gemPath;
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passthru.isRubyGem = true;
inherit meta;
})
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)