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-rw-r--r--pkgs/development/tools/parsing/bison/2.x.nix4
1 files changed, 3 insertions, 1 deletions
diff --git a/pkgs/development/tools/parsing/bison/2.x.nix b/pkgs/development/tools/parsing/bison/2.x.nix
index d760cec62a04..cc4891cb06f5 100644
--- a/pkgs/development/tools/parsing/bison/2.x.nix
+++ b/pkgs/development/tools/parsing/bison/2.x.nix
@@ -1,4 +1,4 @@
-{ stdenv, fetchurl, m4, perl }:
+{ stdenv, lib, fetchurl, m4, perl }:
 
 stdenv.mkDerivation rec {
   name = "bison-2.7";
@@ -11,6 +11,8 @@ stdenv.mkDerivation rec {
   nativeBuildInputs = [ m4 ] ++ stdenv.lib.optional doCheck perl;
   propagatedBuildInputs = [ m4 ];
 
+  patches = lib.optional stdenv.isDarwin ./darwin-vasnprintf.patch;
+
   doCheck = true;
   # M4 = "${m4}/bin/m4";