Remove hardcoded ghc version.

[bezmuth]

This removes the hardcoded ghc version (8107) and instead uses one specified in the settings for stack-lock or auto detected for cabal-plan.

In reference to #177 some more work still needs to be done to flesh out the hidden package dynamic generation but I think this is a step in the right direction.

[DavHau]

I think it would be beneficial if we store the compiler version as version parts separated via . or -. This would allow us to differentiate between major and bugfix version. We could allow the user to ignore the compiler bugfix version for example, which would increase the likelyhood of finding a matching compiler in nixpkgs.

[bezmuth]

I think it would be beneficial if we store the compiler version as version parts separated via . or -. This would allow us to differentiate between major and bugfix version. We could allow the user to ignore the compiler bugfix version for example, which would increase the likelyhood of finding a matching compiler in nixpkgs.

I chose to store the compiler versions using just numbers to match how they are formatted in nixpkgs, could you give an example of how you want the version numbers to be formatted?

[DavHau]

I chose to store the compiler versions using just numbers to match how they are formatted in nixpkgs, could you give an example of how you want the version numbers to be formatted?

How about storing it like this:

{
  compiler = {
    name = "ghc";
    version = "8.10.7";
  };
}

[DavHau]

Thanks for that