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nixpkgs/pkgs/development/interpreters/ruby/gem.nix
2015-01-19 20:02:47 -05:00

137 lines
3.5 KiB
Nix

{ lib, ruby, rubygemsFun, fetchurl, makeWrapper, git } @ defs:
lib.makeOverridable (
{ name
, ruby ? defs.ruby
, rubygems ? (rubygemsFun ruby)
, stdenv ? ruby.stdenv
, namePrefix ? "${ruby.name}" + "-"
, buildInputs ? []
, doCheck ? false
, dontBuild ? true
, meta ? {}
, gemPath ? []
, ...} @ attrs:
stdenv.mkDerivation (attrs // {
inherit ruby rubygems;
inherit doCheck;
buildInputs = [ ruby rubygems makeWrapper git ] ++ buildInputs;
name = namePrefix + name;
src = if attrs ? src
then attrs.src
else fetchurl {
url = "http://rubygems.org/downloads/${attrs.name}.gem";
inherit (attrs) sha256;
};
phases = [ "unpackPhase" "patchPhase" "buildPhase" "checkPhase" "installPhase" "fixupPhase" ];
# 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
else
# Fall back to the original thing for everything else.
unpackPhase
fi
'';
checkPhase = "true";
buildPhase = ''
runHook preBuild
# TODO: Investigate. The complete working tree is touched by fetchgit.
if [ -d .git ]; then
git reset
fi
gemspec=$(find . -name '*.gemspec')
echo "found the following gemspecs:"
echo "$gemspec"
gemspec=$(echo "$gemspec" | head -n1)
echo "building $gemspec"
exec 3>&1
output=$(gem build $gemspec | tee >(cat - >&3))
exec 3>&-
gempkg=$(echo "$output" | grep -oP 'File: \K(.*)')
echo "gem package built: $gempkg"
runHook postBuild
'';
installPhase = ''
runHook preInstall
# NOTE: This does NOT build the unpacked gem, but installs $src directly.
# Gems that have not been downloaded from rubygems.org may need a
# separate buildPhase.
# --ignore-dependencies is necessary as rubygems otherwise always
# connects to the repository, thus breaking pure builds.
GEM_HOME=$out/${ruby.gemPath} \
gem install \
--local \
--force \
--http-proxy "http://nodtd.invalid" \
--ignore-dependencies \
--build-root "/" \
--backtrace \
$gempkg $gemFlags -- $buildFlags
# Yes, we really do need the $out/${ruby.gemPath}/cache.
# This is very important in order for many parts of RubyGems/Bundler to not blow up.
# See https://github.com/bundler/bundler/issues/3327
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" \
--prefix RUBYLIB : "${rubygems}/lib" \
$extraWrapperFlags ''${extraWrapperFlagsArray[@]}
done
#--prefix RUBYOPT rubygems \
# looks like useless files which break build repeatability and consume space
rm -fv $out/${ruby.gemPath}/doc/*/*/created.rid || true
rm -fv $out/${ruby.gemPath}/gems/*/ext/*/mkmf.log || true
mkdir -p $out/nix-support
cat > $out/nix-support/setup-hook <<EOF
if [[ "\$GEM_PATH" != *$out* ]]; then
addToSearchPath GEM_PATH $out/${ruby.gemPath}
fi
EOF
runHook postInstall
'';
propagatedBuildInputs = gemPath;
propagatedUserEnvPkgs = gemPath;
passthru.isRubyGem = true;
inherit meta;
})
)