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-rw-r--r--nixpkgs/pkgs/development/interpreters/ruby/default.nix4
1 files changed, 3 insertions, 1 deletions
diff --git a/nixpkgs/pkgs/development/interpreters/ruby/default.nix b/nixpkgs/pkgs/development/interpreters/ruby/default.nix
index c14cb4648e35..9ec7a448b59f 100644
--- a/nixpkgs/pkgs/development/interpreters/ruby/default.nix
+++ b/nixpkgs/pkgs/development/interpreters/ruby/default.nix
@@ -202,7 +202,9 @@ let
 
           # Allow to override compiler. This is important for cross compiling as
           # we need to set a compiler that is different from the build one.
-          sed -i 's/CONFIG\["CC"\] = "\(.*\)"/CONFIG["CC"] = if ENV["CC"].nil? || ENV["CC"].empty? then "\1" else ENV["CC"] end/'  "$rbConfig"
+          sed -i "$rbConfig" \
+            -e 's/CONFIG\["CC"\] = "\(.*\)"/CONFIG["CC"] = if ENV["CC"].nil? || ENV["CC"].empty? then "\1" else ENV["CC"] end/' \
+            -e 's/CONFIG\["CXX"\] = "\(.*\)"/CONFIG["CXX"] = if ENV["CXX"].nil? || ENV["CXX"].empty? then "\1" else ENV["CXX"] end/'
 
           # Remove unnecessary external intermediate files created by gems
           extMakefiles=$(find $out/${finalAttrs.passthru.gemPath} -name Makefile)