* ```
error: --- TypeError ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- nix-build
at: (69:16) in file: /nix/store/h56h9jaa88b5mhwmg7hqn2w426ljg63c-nixos-20.09.1469.13d0c311e3a/nixos/lib/customisation.nix

    68|     let
    69|       result = f origArgs;
      |                ^
    70|
attempt to call something which is not a function but a set
```