{ system, allPackages, platform, crossSystem, config, ... } @ args: rec { vanillaStdenv = import ../. (args // { # Remove config.replaceStdenv to ensure termination. config = builtins.removeAttrs config [ "replaceStdenv" ]; }); buildPackages = allPackages { inherit system platform crossSystem config; # It's OK to change the built-time dependencies allowCustomOverrides = true; stdenv = vanillaStdenv; }; stdenvCustom = config.replaceStdenv { pkgs = buildPackages; }; }