How do you use your own nixpkgs forks?

For your first problem, I think you might be able to just use the commit hash instead of the branch name.

But I’ve never used your inline home-manager method, instead I’ve used this in my configuration.nix:

  nixpkgs.overlays = [
    (self: super: {
      # https://github.com/NixOS/nixpkgs/pull/87797
      nomachine-client = (import (builtins.fetchTarball {
        url =
          "https://github.com/NixOS/nixpkgs/archive/4f7a8b4b37de6c7a2c3c689ff7202069fc5832d1.tar.gz";
        sha256 = "08sghr19nas4mb74k88mvy4sq9zgb9m15lp0l11y56vx142j3lzg";
      }) { config = { allowUnfree = true; }; }).nomachine-client;
    })
  ];

In this example it’s from NixOS org on GitHub, but it could be your own repo as well. I tend to do this for each package versus creating my own fork of nixpkgs and continually merging there.

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