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-rw-r--r--pkgs/misc/emulators/retroarch/cores.nix4
1 files changed, 2 insertions, 2 deletions
diff --git a/pkgs/misc/emulators/retroarch/cores.nix b/pkgs/misc/emulators/retroarch/cores.nix
index bddabede0a076..455ac5219ae8f 100644
--- a/pkgs/misc/emulators/retroarch/cores.nix
+++ b/pkgs/misc/emulators/retroarch/cores.nix
@@ -8,11 +8,11 @@ let
 
   d2u = lib.replaceChars ["-"] ["_"];
 
-  mkLibRetroCore = { core, src, description, license, broken ? false, ... }@a:
+  mkLibRetroCore = { core, src, description, license, broken ? false, version ? "2020-03-06", ... }@a:
   lib.makeOverridable stdenv.mkDerivation ((rec {
 
     name = "libretro-${a.core}-${version}";
-    version = "2020-03-06";
+    inherit version;
     inherit (a) src;
 
     buildInputs = [ zlib ] ++ a.extraBuildInputs or [];