nix-helpers: c9212b00851281cc1870763f79cc8ddea8610db0

     1: # Remove cruft, like "override" and "overrideDerivation". These are inserted
     2: # into attrsets automatically by functions like callPackage, but since they're
     3: # functions, they can't be converted to strings and hence they can break things
     4: # like build environments (which are assumed to be name/value env vars).
     5: { lib }:
     6: 
     7: with builtins;
     8: with lib;
     9: with rec {
    10:   go =
    11:     as: if isAttrs as then mapAttrs (n: go) (filterAttrs notOverride as) else as;
    12: 
    13:   notOverride =
    14:     n: v:
    15:     !(elem n [
    16:       "override"
    17:       "overrideDerivation"
    18:     ]);
    19: };
    20: go