feat(nixos): add OMP module

configs/nixos/hosts/zeus/default.nix

@@ -32,6 +32,7 @@
   modules.shell.herdr.enable = true;
   modules.shell.gitea-axi.enable = true;
   modules.shell.pi.enable = true;
+  modules.shell.omp.enable = true;
 
   modules.desktop.enable = true;
   modules.desktop.apps.obsidian.enable = true;

configs/nixos/modules/shell/omp.nix

@@ -0,0 +1,20 @@
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+# Oh My Pi, installed alongside upstream Pi as the `omp` command.
+let
+  cfg = config.modules.shell.omp;
+  user = config.user.name;
+in
+{
+  options.modules.shell.omp = {
+    enable = lib.mkEnableOption "Oh My Pi, a batteries-included fork of Pi";
+  };
+
+  config = lib.mkIf cfg.enable {
+    home-manager.users.${user}.home.packages = [ pkgs.omp ];
+  };
+}