feat: add minimal system option

global/util/default.nix

@@ -1,13 +0,0 @@
-{ pkgs
-, lib
-, config
-, ... }: with lib; let
-  cfg = config.global.util;
-in {
-  options.global.util = { };
-
-  config = {
-    programs.zsh.enable = true;
-    environment.shells = singleton pkgs.zsh;
-  };
-}

home/util/home.nix

@@ -1,10 +1,14 @@
 { pkgs
 , lib
 , config
-, ... }: with lib; {
+, ... }: with lib; let
+  cfg = config.passthrough.util;
+in {
   home.packages = with pkgs; [
-    pv file wget nix-index
-    e2fsprogs lsscsi zip unzip
+    pv file wget e2fsprogs
+  ] ++ optionals (!cfg.minimal) [
+    nix-index
+    lsscsi zip unzip
     pciutils usbutils nvme-cli
   ] ++ optionals config.passthrough.gui [
     gtk-engine-murrine

home/util/nixos.nix

@@ -2,15 +2,31 @@
 , lib
 , config
 , ... }: with lib; let
+  cfg = config.home.util;
   gui = with config.global.gui; ( enable && session );
 in {
-  users.home.persist.directories = [
-    ".cache/nix-index"
-  ] ++
-  optionals gui [
-    ".local/share/Mission Planner"
-    ".config/ExpressLRS Configurator"
-    ".config/betaflight-configurator"
-    ".config/inav-configurator"
-  ];
+  options.home.util = {
+    minimal = mkEnableOption "minimal system environment with less packages";
+  };
+
+  config = {
+    users.homeModules = [
+      # this module passes util configuration to home-manager
+      { passthrough.util = cfg; }
+    ];
+
+    programs.zsh.enable = true;
+    environment.shells = singleton pkgs.zsh;
+
+    users.home.persist.directories = [ ] ++
+    optionals (!cfg.minimal) [
+      ".cache/nix-index"
+    ] ++
+    optionals gui [
+      ".local/share/Mission Planner"
+      ".config/ExpressLRS Configurator"
+      ".config/betaflight-configurator"
+      ".config/inav-configurator"
+    ];
+  };
 }