···1818 # so we do it now.
1919 localSystem ? builtins.intersectAttrs { system = null; platform = null; } args
20202121+, # These are needed only because nix's `--arg` command-line logic doesn't work
2222+ # with unnamed parameters allowed by ...
2323+ system ? localSystem.system
2424+, platform ? localSystem.platform
2525+2126, # Fallback: The contents of the configuration file found at $NIXPKGS_CONFIG or
2227 # $HOME/.config/nixpkgs/config.nix.
2328 config ? let