1 files changed, 8 insertions, 5 deletions
diff --git a/pkgs/coreboot/default.nix b/pkgs/coreboot/default.nix
index 044e3667d650..3a24dd92fb54 100644
--- a/pkgs/coreboot/default.nix
+++ b/pkgs/coreboot/default.nix
@@ -44,9 +44,12 @@ let
     '';
   };
 
-  filteredConfig = lib.filterAttrs (n: v: v != null) corebootConfig;
-  lines = lib.mapAttrsToList (name: value: "${name}=${value}") filteredConfig;
-  configFile = writeText "config" (lib.concatStringsSep "\n" lines);
+  writeConfig = config: let
+    filteredConfig = lib.filterAttrs (n: v: v != null) config;
+    lines = lib.mapAttrsToList (name: value: "${name}=${value}") filteredConfig;
+    configFile = writeText "config" (lib.concatStringsSep "\n" lines);
+  in configFile;
+
 in stdenv.mkDerivation rec {
 
   pname = "coreboot";
@@ -61,7 +64,7 @@ in stdenv.mkDerivation rec {
 
   configurePhase = ''
     runHook preConfigure
-    cp ${configFile} .config
+    cp ${writeConfig corebootConfig} .config
     make olddefconfig
     runHook postConfigure
   '';
@@ -72,6 +75,6 @@ in stdenv.mkDerivation rec {
   '';
 
   passthru = {
-    inherit toolchain configFile;
+    inherit toolchain writeConfig corebootConfig;
   };
 }