move all ruby modules to development/ruby-modules

2 files changed, 152 insertions, 0 deletions

diff --git a/pkgs/development/ruby-modules/bundler-env/default.nix b/pkgs/development/ruby-modules/bundler-env/default.nix
new file mode 100644
index 00000000000..d5e2154ab3b
--- /dev/null
+++ b/pkgs/development/ruby-modules/bundler-env/default.nix
@@ -0,0 +1,108 @@
+{ stdenv, runCommand, writeText, writeScript, writeScriptBin, ruby, lib
+, callPackage, defaultGemConfig, fetchurl, fetchgit, buildRubyGem, buildEnv
+, git
+, makeWrapper
+, bundler
+, tree
+}@defs:
+
+{ name, gemset, gemfile, lockfile, ruby ? defs.ruby, gemConfig ? defaultGemConfig
+, postBuild ? null
+, document ? []
+, meta ? {}
+, ignoreCollisions ? false
+, ...
+}@args:
+
+let
+
+  shellEscape = x: "'${lib.replaceChars ["'"] [("'\\'" + "'")] x}'";
+  importedGemset = import gemset;
+  applyGemConfigs = attrs:
+    (if gemConfig ? "${attrs.gemName}"
+    then attrs // gemConfig."${attrs.gemName}" attrs
+    else attrs);
+  configuredGemset = lib.flip lib.mapAttrs importedGemset (name: attrs:
+    applyGemConfigs (attrs // { gemName = name; })
+  );
+  hasBundler = builtins.hasAttr "bundler" importedGemset;
+  bundler = if hasBundler then gems.bundler else defs.bundler.override (attrs: { inherit ruby; });
+  gems = lib.flip lib.mapAttrs configuredGemset (name: attrs:
+    buildRubyGem ((removeAttrs attrs ["source"]) // attrs.source // {
+      inherit ruby;
+      gemName = name;
+      gemPath = map (gemName: gems."${gemName}") (attrs.dependencies or []);
+    }));
+  # We have to normalize the Gemfile.lock, otherwise bundler tries to be
+  # helpful by doing so at run time, causing executables to immediately bail
+  # out. Yes, I'm serious.
+  confFiles = runCommand "gemfile-and-lockfile" {} ''
+    mkdir -p $out
+    cp ${gemfile} $out/Gemfile
+    cp ${lockfile} $out/Gemfile.lock
+
+    cd $out
+    chmod +w Gemfile.lock
+    export GEM_PATH=${bundler}/${ruby.gemPath}
+    ${ruby}/bin/ruby -rubygems -e \
+      "require 'bundler'; Bundler.definition.lock('Gemfile.lock')"
+  '';
+  envPaths = lib.attrValues gems ++ lib.optional (!hasBundler) bundler;
+  bundlerEnv = buildEnv {
+    inherit name ignoreCollisions;
+    paths = envPaths;
+    pathsToLink = [ "/lib" ];
+    postBuild = ''
+      ${ruby}/bin/ruby ${./gen-bin-stubs.rb} \
+        "${ruby}/bin/ruby" \
+        "${confFiles}/Gemfile" \
+        "$out/${ruby.gemPath}" \
+        "${bundler}/${ruby.gemPath}" \
+        ${shellEscape (toString envPaths)}
+    '' + lib.optionalString (postBuild != null) postBuild;
+    passthru = rec {
+      inherit ruby bundler meta gems;
+
+      wrappedRuby = stdenv.mkDerivation {
+        name = "wrapped-ruby-${name}";
+        nativeBuildInputs = [ makeWrapper ];
+        buildCommand = ''
+          mkdir -p $out/bin
+          for i in ${ruby}/bin/*; do
+            makeWrapper "$i" $out/bin/$(basename "$i") \
+              --set BUNDLE_GEMFILE ${confFiles}/Gemfile \
+              --set BUNDLE_PATH ${bundlerEnv}/${ruby.gemPath} \
+              --set GEM_HOME ${bundlerEnv}/${ruby.gemPath} \
+              --set GEM_PATH ${bundlerEnv}/${ruby.gemPath}
+          done
+        '';
+      };
+
+      env = let
+        irbrc = builtins.toFile "irbrc" ''
+          if !(ENV["OLD_IRBRC"].nil? || ENV["OLD_IRBRC"].empty?)
+            require ENV["OLD_IRBRC"]
+          end
+          require 'rubygems'
+          require 'bundler/setup'
+        '';
+        in stdenv.mkDerivation {
+          name = "interactive-${name}-environment";
+          nativeBuildInputs = [ wrappedRuby bundlerEnv ];
+          shellHook = ''
+            export OLD_IRBRC="$IRBRC"
+            export IRBRC=${irbrc}
+          '';
+          buildCommand = ''
+            echo >&2 ""
+            echo >&2 "*** Ruby 'env' attributes are intended for interactive nix-shell sessions, not for building! ***"
+            echo >&2 ""
+            exit 1
+          '';
+        };
+    };
+  };
+
+in
+
+bundlerEnv
diff --git a/pkgs/development/ruby-modules/bundler-env/gen-bin-stubs.rb b/pkgs/development/ruby-modules/bundler-env/gen-bin-stubs.rb
new file mode 100644
index 00000000000..fa77682cfd5
--- /dev/null
+++ b/pkgs/development/ruby-modules/bundler-env/gen-bin-stubs.rb
@@ -0,0 +1,44 @@
+require 'rbconfig'
+require 'rubygems'
+require 'rubygems/specification'
+require 'fileutils'
+
+# args/settings
+out = ENV["out"]
+ruby = ARGV[0]
+gemfile = ARGV[1]
+bundle_path = ARGV[2]
+bundler_gem_path = ARGV[3]
+paths = ARGV[4].split
+
+# generate binstubs
+FileUtils.mkdir_p("#{out}/bin")
+paths.each do |path|
+  next unless File.directory?("#{path}/nix-support/gem-meta")
+
+  name = File.read("#{path}/nix-support/gem-meta/name")
+  executables = File.read("#{path}/nix-support/gem-meta/executables").split
+  executables.each do |exe|
+    File.open("#{out}/bin/#{exe}", "w") do |f|
+      f.write(<<-EOF)
+#!#{ruby}
+#
+# This file was generated by Nix.
+#
+# The application '#{exe}' is installed as part of a gem, and
+# this file is here to facilitate running it.
+#
+
+ENV["BUNDLE_GEMFILE"] = "#{gemfile}"
+ENV["BUNDLE_PATH"] = "#{bundle_path}"
+
+Gem.use_paths("#{bundler_gem_path}", ENV["GEM_PATH"])
+
+require 'bundler/setup'
+
+load Gem.bin_path(#{name.inspect}, #{exe.inspect})
+EOF
+      FileUtils.chmod("+x", "#{out}/bin/#{exe}")
+    end
+  end
+end