Michael Raskin
6815a0077d
Overrides often inherit pname from the overriden package, and if they get the already-prefixed version, defaulting the systems list to [pname] produces wrong (and unintuitive) results. So we keep the prefix in the store paths for clarity, and nix-env sees disambiguated names with -i/-u (which should not be used anyway); but overrides won't be broken.