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-rw-r--r--pkgs/development/ruby-modules/bundled-common/default.nix11
-rw-r--r--pkgs/development/ruby-modules/gem/default.nix2
2 files changed, 7 insertions, 6 deletions
diff --git a/pkgs/development/ruby-modules/bundled-common/default.nix b/pkgs/development/ruby-modules/bundled-common/default.nix
index b18248c7d61b8..86c885b52dcb4 100644
--- a/pkgs/development/ruby-modules/bundled-common/default.nix
+++ b/pkgs/development/ruby-modules/bundled-common/default.nix
@@ -70,11 +70,12 @@ let
       assert gemFiles.gemdir != null; "cp -a ${gemFiles.gemdir}/* $out/") #*/
   );
 
-  maybeCopyAll = pkgname: if pkgname == null then "" else
-  let
-    mainGem = gems.${pkgname} or (throw "bundlerEnv: gem ${pkgname} not found");
-  in
-    copyIfBundledByPath mainGem;
+  maybeCopyAll = pkgname: lib.optionalString (pkgname != null) (
+    let
+      mainGem = gems.${pkgname} or (throw "bundlerEnv: gem ${pkgname} not found");
+    in
+      copyIfBundledByPath mainGem
+  );
 
   # We have to normalize the Gemfile.lock, otherwise bundler tries to be
   # helpful by doing so at run time, causing executables to immediately bail
diff --git a/pkgs/development/ruby-modules/gem/default.nix b/pkgs/development/ruby-modules/gem/default.nix
index b33758486eed1..7ae9168975ab6 100644
--- a/pkgs/development/ruby-modules/gem/default.nix
+++ b/pkgs/development/ruby-modules/gem/default.nix
@@ -233,7 +233,7 @@ stdenv.mkDerivation ((builtins.removeAttrs attrs ["source"]) // {
     pushd $out/${ruby.gemPath}
     find doc/ -iname created.rid -delete -print
     find gems/*/ext/ extensions/ \( -iname Makefile -o -iname mkmf.log -o -iname gem_make.out \) -delete -print
-    ${if keepGemCache then "" else "rm -fvr cache"}
+    ${lib.optionalString (!keepGemCache) "rm -fvr cache"}
     popd
 
     # write out metadata and binstubs