Ability to use non-default `devShell`

[sir4ur0n]

Current implementation hard-codes the use of devShell.${system} while other shells can be provided in flake.nix at devShell.${system}.<whatever>, e.g. devShell.${system}.foo.

It would be useful to provide means of accessing these other shells too.

[adrian-gierakowski]

this could be solved generically the solution proposed here

[adrian-gierakowski]

actually, you can actually do that with:

resultOfFlakeCompat.defaultNix.devShells.${system}.foo

you can accept any outputs of the flake this way, see here