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-rw-r--r--pkgs/tools/compression/pbzip2/default.nix2
1 files changed, 1 insertions, 1 deletions
diff --git a/pkgs/tools/compression/pbzip2/default.nix b/pkgs/tools/compression/pbzip2/default.nix
index c7c1b7efc94..1d5cd85a62e 100644
--- a/pkgs/tools/compression/pbzip2/default.nix
+++ b/pkgs/tools/compression/pbzip2/default.nix
@@ -17,7 +17,7 @@ stdenv.mkDerivation rec {
 
   installFlags = "PREFIX=$(out)";
 
-  NIX_CFLAGS_COMPILE = "-Wno-error=reserved-user-defined-literal";
+  NIX_CFLAGS_COMPILE = stdenv.lib.optionalString stdenv.cc.isClang "-Wno-error=reserved-user-defined-literal";
 
   meta = with stdenv.lib; {
     homepage = http://compression.ca/pbzip2/;