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-rw-r--r--pkgs/development/ruby-modules/gem-config/default.nix9
1 files changed, 9 insertions, 0 deletions
diff --git a/pkgs/development/ruby-modules/gem-config/default.nix b/pkgs/development/ruby-modules/gem-config/default.nix
index 4d7ddf549c3..088bcedf6de 100644
--- a/pkgs/development/ruby-modules/gem-config/default.nix
+++ b/pkgs/development/ruby-modules/gem-config/default.nix
@@ -39,6 +39,15 @@ let
 in
 
 {
+  asciidoctor-diagram = { version, ruby, ... }: {
+    postInstall = ''
+      # Delete vendored JAR files unless using JRuby.
+      if ruby -e 'exit(RUBY_PLATFORM != "java")'; then
+          rm -v $out/${ruby.gemPath}/gems/$gemName-${version}/lib/*.jar
+      fi
+    '';
+  };
+
   atk = attrs: {
     dependencies = attrs.dependencies ++ [ "gobject-introspection" ];
     nativeBuildInputs = [ rake bundler pkgconfig ];