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{ lib, callPackage, runCommand, makeWrapper, ruby }@defs:
# Use for simple installation of Ruby tools shipped in a Gem.
# Start with a Gemfile that includes `gem <toolgem>`
# > nix-shell -p bundler bundix
# (shell)> bundle lock
# (shell)> bundix
# Then use rubyTool in the default.nix:
# rubyTool { pname = "gemifiedTool"; gemdir = ./.; exes = ["gemified-tool"]; }
# The 'exes' parameter ensures that a copy of e.g. rake doesn't polute the system.
{
# use the name of the name in question; its version will be picked up from the gemset
pname
# Gemdir is the location of the Gemfile{,.lock} and gemset.nix; usually ./.
# This is required unless gemfile, lockfile, and gemset are all provided
, gemdir ? null
# Exes is the list of executables provided by the gems in the Gemfile
, exes ? []
# Scripts are ruby programs depend on gems in the Gemfile (e.g. scripts/rails)
, scripts ? []
, ruby ? defs.ruby
, gemfile ? null
, lockfile ? null
, gemset ? null
, preferLocalBuild ? false
, allowSubstitutes ? false
, installManpages ? true
, meta ? {}
, nativeBuildInputs ? []
, buildInputs ? []
, postBuild ? ""
, gemConfig ? null
, passthru ? {}
}@args:
let
basicEnv = (callPackage ../bundled-common {
inherit ruby;
}) args;
cmdArgs = removeAttrs args [ "pname" "postBuild" "gemConfig" "passthru" "gemset" "gemdir" ] // {
inherit preferLocalBuild allowSubstitutes; # pass the defaults
nativeBuildInputs = nativeBuildInputs ++ lib.optionals (scripts != []) [ makeWrapper ];
meta = {
mainProgram = pname;
inherit (ruby.meta) platforms;
} // meta;
passthru = basicEnv.passthru // {
inherit basicEnv;
inherit (basicEnv) env;
} // passthru;
};
in
runCommand basicEnv.name cmdArgs ''
mkdir -p $out/bin
${(lib.concatMapStrings (x: "ln -s '${basicEnv}/bin/${x}' $out/bin/${x};\n") exes)}
${(lib.concatMapStrings (s: "makeWrapper $out/bin/$(basename ${s}) $srcdir/${s} " +
"--set BUNDLE_GEMFILE ${basicEnv.confFiles}/Gemfile "+
"--unset BUNDLE_PATH "+
"--set BUNDLE_FROZEN 1 "+
"--set GEM_HOME ${basicEnv}/${ruby.gemPath} "+
"--set GEM_PATH ${basicEnv}/${ruby.gemPath} "+
"--chdir \"$srcdir\";\n") scripts)}
${lib.optionalString installManpages ''
for section in {1..9}; do
mandir="$out/share/man/man$section"
# See: https://github.com/NixOS/nixpkgs/blob/master/pkgs/development/ruby-modules/gem/default.nix#L184-L200
# See: https://github.com/rubygems/rubygems/blob/7a7b234721c375874b7e22b1c5b14925b943f04e/bundler/lib/bundler.rb#L285-L291
find -L ${basicEnv}/${ruby.gemPath}/${lib.optionalString (basicEnv.gemType == "git" || basicEnv.gemType == "url") "bundler/"}gems/${basicEnv.name} \( -wholename "*/man/*.$section" -o -wholename "*/man/man$section/*.$section" \) -print -execdir mkdir -p $mandir \; -execdir cp '{}' $mandir \;
done
''}
''
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