Hardsetting compiler needs work

[573]

neuron/project.nix

Line 15 in 09d00b9

compiler ? "ghc883",

causes

error: value is a string while a set was expected, at /home/runner/work/neuron/neuron/project.nix:115:21

Reproduce locally with:

nix-instantiate --strict --json --eval -E 'import ./shell.nix {}'

Use :w | !nix-instantiate --strict --json --eval -E 'import ./% {}' in vim command mode

[573]

When trying to override as in the patch getting

error: cannot import '/nix/store/j3lwbasppdsngpqkq7f05lnw88mxs7x5-cabal2nix-neuron', since path '/nix/store/rrpq1qsj2a1nrclvdh91y572d4312lww-cabal2nix-neuron.drv' is not valid, at /nix/store/54qqg9k8z49ay0b9ycgf9fdhqaxf97h6-source/pkgs/development/haskell-modules/make-package-set.nix:83:54

[573]

As user @infinisil pointed out it is

nix-instantiate --strict --eval -E 'import ./project.nix { compiler = (import <nixpkgs>{}).haskell.packages.ghc883; }'