{ buildRubyGem, ruby }: buildRubyGem rec { inherit ruby; name = "${gemName}-${version}"; gemName = "bundler"; version = "1.16.4"; source.sha256 = "15zrxqv817w4vawc23lx3miigir36ba59wkykkr6l1nkf0iy013d"; dontPatchShebangs = true; postFixup = '' sed -i -e "s/activate_bin_path/bin_path/g" $out/bin/bundle ''; }