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-rw-r--r--pkgs/tools/archivers/unrar/default.nix4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkgs/tools/archivers/unrar/default.nix b/pkgs/tools/archivers/unrar/default.nix
index 9ef93a30b68..1d11a8ab478 100644
--- a/pkgs/tools/archivers/unrar/default.nix
+++ b/pkgs/tools/archivers/unrar/default.nix
@@ -11,6 +11,10 @@ stdenv.mkDerivation {
     sha256 = "13ida8vcamiagl40d9yfjma9k6givxczhx278f1p7bv9wgb8gfmc";
   };
 
+  preBuild = ''
+    export buildFlags="CXX=$CXX"
+  '';
+
   installPhase = ''
     installBin unrar