Since [1], cabal2nix has been able to parse full platform triples. We need this for when the system doesn't say enough info (e.g. android). [1]: 0bb88f0009 (diff-d9172aeec4039eef8cfcc8a2ab6c0677R143)
0bb88f0009 (diff-d9172aeec4039eef8cfcc8a2ab6c0677R143)