Strategy to use same config at work and home

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2

I haven’t taken the plunge into home manager yet, but I’ve done this with my /etc/nixos/configuration.nix.

My approach is to keep my configuration in a git repo, with clones on my home and work machines.

I have an import like adminInfo = import ./admin-info.nix {}; in configuration.nix. And I have two files in the repo:

home-admin-info.nix:

{}:

{
  user = "matt";
  hostName = "alpha";
  domain = "mchenryfamily.org";
}

work-admin-info.nix:

{}:

{
  user = "mmchenry";
  hostName = "mmchenry-nixos";
  domain = "work.com";
}

The only thing that’s not version controlled in git is the admin-info.nix symlink, which points to the appropriate *-admin-info.nix on each machine.

Then elsewhere in configuration.nix, I can refer to these variables, e.g. networking.hostName = adminInfo.hostName.

I also have hardware-configuration.nix symlinked to home-hardware-info.nix or work-hardware-info.nix, since the machines need different kernel modules etc.