kernel-builder: Force configuration to be normalized
@@ -182,6 +182,12 @@ let kernel = stdenv.mkDerivation {
# reads the existing .config file and prompts the user for options in
# the current kernel source that are not found in the file.
make $makeFlags "''${makeFlagsArray[@]}" oldconfig
+ if ! diff -q $buildRoot/.config{,.old}; then
+ echo 'error: Your configuration does not match once passed through `make oldconfig`.'
+ echo ' Use the `bin/kernel-normalize-config` tool to refresh the configuration.'
+ echo " Don't forget to make sure the changed configuration options are good!"
+ exit 1
+ fi
runHook postConfigure
make $makeFlags "''${makeFlagsArray[@]}" prepare
