How to run lit tests on Mac OSX without gcc?

[Thomas Mader via digitalmars-d-ldc]

On Saturday, 26 August 2017 at 14:55:23 UTC, Johan Engelen wrote:
> This is strange; is it the only lit test that fails? Or do all 
> lit tests fail that need to link?
>
> I am developing (almost exclusively) on Mac and the lit tests 
> definitely work. LDC uses "gcc" for linking, also on Mac, where 
> it forwards to clang (with minor tweak). This is not particular 
> to the lit tests. Does "gcc" not work on your commandline?

No there is no gcc available because I am trying to make a Nix 
(https://nixos.org/nix/) package which is a pure and 
deterministic approach to building packages.
Because of that only the dependencies which are defined 
explicitly are available for the build.
In my case I haven't added gcc as an dependency because I thought 
it would work without it.

But if I understand you correctly than it isn't possible to link 
without gcc because it's needed for the redirect and there is no 
possibility for an override?