How can I reference a package from my custom flake that I added?

[codygman]

I extracted a single package that was previously in pkgs like:

final: prev: {
  # keep sources this first
  sources = prev.callPackage (import ./_sources/generated.nix) { };
  # then, call packages with `final.callPackage`
  talon-voice = final.callPackage ./applications/misc/talon-voice { };
}

Then used in a profile users/profiles/talon/default.nix like:

{pkgs, ...}:
{
  home.packages = [ pkgs.talon-voice ];
}

I added my flake source to flake.nix inputs like this:

      # end ANTI CORRUPTION LAYER

      # My flakes
      talon.url = "git+ssh://[email protected]/codygman/talon-beta.git?ref=main";
    };

  outputs =

Then I tried updating users/profiles/talon/default.nix guessing it would know what talon was now:

{pkgs, ...}:
{
  home.packages = [ talon ];
}

but I seem to have a misunderstanding given the error:

hci  master 「↪ 𝚫 📁 」  ⎔ took 5s 
✖1 ❯ bud rebuild tower switch
[sudo] password for cody: 
warning: Git tree '/home/cody/hci' is dirty
building the system configuration...
warning: Git tree '/home/cody/hci' is dirty
error: undefined variable 'talon'

       at /nix/store/9gzd4zzp3mp77dhlyxbsnsh2nk1fjy4a-source/users/profiles/talon/default.nix:4:21:

            3|   # environment.systemPackages = [ pkgs.talon-voice ];
            4|   home.packages = [ talon ];
             |                     ^
            5|   # TODO get this symlinking working
(use '--show-trace' to show detailed location information)

So then I guess is that my talon flake would have a package and perhaps I should update:

-  talon-voice = final.callPackage ./applications/misc/talon-voice { };
+  talon-voice = talon;

but get:

✖1 ❯ bud rebuild tower switch
warning: Git tree '/home/cody/hci' is dirty
building the system configuration...
warning: Git tree '/home/cody/hci' is dirty
error: undefined variable 'talon'

       at /nix/store/iq7hmn7bd3i16vgqz0nr675n9sjzmwjw-source/pkgs/default.nix:7:17:

            6|   apheleia-mode = final.callPackage ./applications/editors/emacs/elisp-packages/apheleia-mode { };
            7|   talon-voice = talon;
             |                 ^
            8|   northwind-sql = prev.callPackage ./development/misc/northwind-sql { };
(use '--show-trace' to show detailed location information)

At this point I'm sure I really don't understand how this process is supposed to work and post this question 😅

[nrdxp]

So the way nvfetcher works now, you shouldn't need to add package sources as flake inputs at all, but instead they are managed as a separate concern entirely and listed in sources.toml.

[codygman]

you shouldn't need to add package sources as flake inputs at all

That's very useful for package sources such as emacs packages I use newer versions of.

I'm asking about referring to a flake input I've added that is another flake here though.