wrappers: define pkgs default within type declaration

[MattSturgeon]

• wrappers: move programs.nixvim declaration to _shared.nix
• wrappers: define pkgs default within type declaration

The first commit refactors the programs.nixvim option declaration so that it can be centralised to wrappers/_shared.nix, the second commit then moves the nixpkgs.pkgs = pkgs definition into the evalNixvim call.

This means nixpkgs.pkgs is defined in a module that is considered part of programs.nixvim's type. Config definitions are not part of the type, and therefore are not part of type.getSubModules or type.getSubOptions.

Fixes #2378

[MattSturgeon]

@Mergifyio queue

[mergify]

queue

✅ The pull request has been merged automatically

The pull request has been merged automatically at 5cd8c9c

[mergify]

This pull request, with head sha 5cd8c9cf3104027b42ffe531fb68463ecb08ebc9, has been successfully merged with fast-forward by Mergify.

This pull request will be automatically closed by GitHub.

As soon as GitHub detects that the sha 5cd8c9cf3104027b42ffe531fb68463ecb08ebc9 is part of the main branch, it will mark this pull request as merged.

It is possible for this pull request to remain open if this detection does not happen, this usually happens when a force-push is done on this branch wrapper_type_pkgs, this means GitHub will fail to detect the merge.