refactor: switch all mentions of flake dir to $FLAKE and fix vars readonly

common/default.nix

@@ -32,9 +32,9 @@
 
   nix = {
     # Allow deleting store files with '.' in the name
-    package = pkgs.nix.overrideAttrs (oldAttrs: {
+    package = pkgs.nix.overrideAttrs (o: {
       patches =
-        (oldAttrs.patches or [])
+        (o.patches or [])
         ++ [
           ./overlays/nix/patch
         ];
@@ -65,7 +65,6 @@
       extraArgs = "--keep-since 30d";
     };
   };
-  environment.variables.FLAKE = lib.mkDefault "/home/matt/.nix";
 
   services = {
     fwupd.enable = true;
@@ -83,8 +82,13 @@
     default = {
       imports = [
         # Make the vars be the same on Nix and HM
-        ./vars
-        {vars = config.vars;}
+        {
+          options.vars = lib.mkOption {
+            type = lib.types.attrs;
+            readOnly = true;
+            default = config.vars;
+          };
+        }
 
         nur.hmModules.nur
 
@@ -109,7 +113,12 @@
         home.stateVersion = mainUserConf.home.stateVersion;
       };
 
-    # TODO: make user an array?
+    greeter =
+      default
+      // {
+        home.stateVersion = mainUserConf.home.stateVersion;
+      };
+
     ${mainUser} = default;
   };
 }

common/nix-on-droid.nix

@@ -1,5 +1,6 @@
 {
   config,
+  lib,
   nur,
   ...
 }: {
@@ -39,8 +40,13 @@
   home-manager.config = {
     imports = [
       # Make the vars be the same on Nix and HM
-      ./vars
-      {vars = config.vars;}
+      {
+        options.vars = lib.mkOption {
+          type = lib.types.attrs;
+          readOnly = true;
+          default = config.vars;
+        };
+      }
 
       nur.hmModules.nur
 

common/vars/default.nix

@@ -2,12 +2,12 @@
   config,
   lib,
   ...
-}: {
-  options.vars = let
-    inherit (lib) mkOption types;
-    flakeDir = config.environment.variables.FLAKE;
-    cfg = config.vars;
-  in {
+}: let
+  inherit (lib) mkOption types;
+  flakeDir = config.environment.variables.FLAKE;
+  cfg = config.vars;
+in {
+  options.vars = {
     mainUser = mkOption {
       type = types.str;
       description = ''
@@ -34,8 +34,7 @@
 
       default = import ./prompt-schemes.nix cfg.promptMainColor;
 
-      # FIXME: doesn't work when passing vars to home-manager
-      # readOnly = true;
+      readOnly = true;
       type = with types;
         submodule {
           options = {
@@ -83,4 +82,8 @@
       default = true;
     };
   };
+
+  config = {
+    environment.variables.FLAKE = lib.mkDefault "/home/${cfg.mainUser}/.nix";
+  };
 }