Escape all shell arguments uniformly

pkgs/development/ruby-modules/bundler-env/default.nix

@@ -16,8 +16,6 @@
 }@args:
 
 let
-
-  shellEscape = x: "'${lib.replaceChars ["'"] [("'\\'" + "'")] x}'";
   importedGemset = import gemset;
   filteredGemset = (lib.filterAttrs (name: attrs:
     if (builtins.hasAttr "groups" attrs)
@@ -58,8 +56,8 @@ let
         "${confFiles}/Gemfile" \
         "$out/${ruby.gemPath}" \
         "${bundler}/${ruby.gemPath}" \
-        ${shellEscape (toString envPaths)} \
-        ${shellEscape (toString groups)}
+        ${lib.escapeShellArg envPaths} \
+        ${lib.escapeShellArg groups}
     '' + lib.optionalString (postBuild != null) postBuild;
     passthru = rec {
       inherit ruby bundler meta gems;

pkgs/development/ruby-modules/gem/default.nix

@@ -18,8 +18,8 @@
 # Normal gem packages can be used outside of bundler; a binstub is created in
 # $out/bin.
 
-{ lib, ruby, bundler, fetchurl, fetchgit, makeWrapper, git,
-  buildRubyGem, darwin
+{ lib, fetchurl, fetchgit, makeWrapper, git, darwin
+, ruby, bundler
 } @ defs:
 
 lib.makeOverridable (
@@ -53,7 +53,6 @@ lib.makeOverridable (
 , ...} @ attrs:
 
 let
-  shellEscape = x: "'${lib.replaceChars ["'"] [("'\\'" + "'")] x}'";
   src = attrs.src or (
     if type == "gem" then
       fetchurl {
@@ -165,7 +164,7 @@ stdenv.mkDerivation (attrs // {
       ${src} \
       ${attrs.rev} \
       ${version} \
-      ${shellEscape (toString buildFlags)}
+      ${lib.escapeShellArgs buildFlags}
     ''}
 
     ${lib.optionalString (type == "gem") ''