Question about the outputs

[Redhawk18]

I wanted to ask, I added the flake to my system config flake, but when I rebuild I don't see the overlay of the rustowl package? Is it under something else?

[mrcjkb]

Adding the overlay isn't enough. You need to add the package to your environment.systemPackages.
Btw, I'm not sure if this flake works properly yet. See also cordx56/rustowl#30 (comment).

[Redhawk18]

Hmm, thats weird, I'm trying to add it in home manager's packages which isn't env.systempackages but it should be the same right?

        neovim = {
          enable = true;
          defaultEditor = true;
          extraPackages = with pkgs; [
            # programs
            git
            lemonade
            ripgrep
            wl-clipboard
            xclip

            # runtimes
            nodejs
            python3

# ...

            # rust
            rustup
            rust-analyzer
            vscode-extensions.vadimcn.vscode-lldb
            rustowl
          ];
        };

[mrcjkb]

Ah, the mainProgram is called cargo-owlsp. You can invoke it either with cargo-owlsp or cargo owlsp in a Cargo project.
But as I said, I haven't got it to display any decorations in Neovim yet.

[Redhawk18]

cargo-owlsp

wtf

       error: undefined variable 'cargo-owlsp'
       at /nix/store/kn1hd8ip4l1pj73z7caw5bwxmbw6cwnr-source/common/system/home-manager.nix:103:13:
          102|             vscode-extensions.vadimcn.vscode-lldb
          103|             cargo-owlsp
             |             ^
          104|

[mrcjkb]

cargo-owlsp

wtf

   error: undefined variable 'cargo-owlsp'
   at /nix/store/kn1hd8ip4l1pj73z7caw5bwxmbw6cwnr-source/common/system/home-manager.nix:103:13:
      102|             vscode-extensions.vadimcn.vscode-lldb
      103|             cargo-owlsp
         |             ^
      104|

The atrribute is called rustowl, but the binary that is build in the derivation's output (which is added to your PATH) is called cargo-owlsp.

[Redhawk18]

The atrribute is called rustowl, but the binary that is build in the derivation's output (which is added to your PATH) is called cargo-owlsp.

I still get the same error if I add rustowl anyways. Maybe home manager doesn't use the systems packages?

[mrcjkb]

It probably means the overlay is added after your home-manager module is evaluated.

[Redhawk18]

It probably means the overlay is added after your home-manager module is evaluated.

Thats interesting, I wouldn't have thought of that. What would you suggest?

[mrcjkb]

What would you suggest?

You could try adding the a nixos module like this, before the hm module:

modules = [
  ({...}: {
    nixpkgs.overlays = [
     inputs.rustowl-flake.overlays.default 
   ];
  })
  inputs.home-manager.nixosModules.default
]

I'm not sure if that will work, though. NixOS module evaluation can be finicky.

[Redhawk18]

Where do I put this? Before the import of the home manager module?

[Redhawk18]

This is the exact option

https://github.com/nix-community/home-manager/blob/f4d9d1e2ad19d544a0a0cf3f8f371c6139c762e9/modules/programs/neovim.nix#L297

[mrcjkb]

Where do I put this? Before the import of the home manager module?

Somewhere in your config you have to be importing the home-manager module.
I would try putting it before that.

[Redhawk18]

I got the overlay to work, but it looks like the inputs are not inherited

       error: evaluation aborted with the following error message: 'lib.customisation.callPackageWith: Function called without required argument "fenix" at /nix/store/v4ikaz912as7fzfyf8mijrxjzg5aql3s-source/nix/package.nix:4, did you mean "felix", "febio" or "fend"?'

[Redhawk18]

I got it to work, however the problem is I have to add fenix as well

      nixpkgs.overlays = [
        inputs.rustowl.overlays.default
        inputs.fenix.overlays.default
      ];

I think... it works, but the next step is to get it to work with neovim.