nix-helpers: 19b64ad03b7e9c6be199581ab09b7993a6969088

     1: # Like typeOf but spots derivations (a subtype of sets) and callables (functions
     2: # or sets with a '__functor' attribute).
     3: { callPackage, hello, isCallable, lib }:
     4: 
     5: x:
     6: if lib.isDerivation x then
     7:   "derivation"
     8: else if isCallable x then
     9:   "callable"
    10: else
    11:   builtins.typeOf x