refactor(regreet): introduce sessionPackages

home/gabriel/features/games/steam.nix

@@ -54,7 +54,7 @@ in {
     pkgs.protontricks
   ];
 
-  home.exportedSessionPackages = steam-session;
+  home.exportedSessionPackages = [steam-session];
 
   home.persistence = {
     "/persist".directories = [

hosts/common/optional/greetd.nix

@@ -3,13 +3,11 @@
   config,
   pkgs,
   ...
-}: let
-  sessionPackages = lib.mapAttrsToList (_: v: v.home.exportedSessionPackages) config.home-manager.users;
-in {
+}: {
   programs.regreet = {
     enable = true;
+    sessionPackages = lib.flatten (lib.mapAttrsToList (_: v: v.home.exportedSessionPackages) config.home-manager.users);
     cageArgs = ["-s" "-m" "last"];
-    cageEnv.XDG_DATA_DIRS = lib.map (v: "${v}/share") (lib.flatten sessionPackages);
     iconTheme = {
       name = "Papirus-Dark";
       package = pkgs.papirus-icon-theme;

modules/nixos/regreet-cageenv.nix

@@ -1,8 +1,12 @@
 {config, lib, pkgs, ...}: let
-  inherit (lib.types) attrsOf coercedTo listOf str;
+  inherit (lib.types) attrsOf coercedTo listOf str pathInStore;
   cfg = config.programs.regreet;
 in {
   options.programs.regreet = {
+    sessionPackages = lib.mkOption {
+      type = listOf pathInStore;
+      default = [];
+    };
     cageEnv = lib.mkOption {
       type = attrsOf (coercedTo (listOf str) (lib.concatStringsSep ":") str);
       default = {};
@@ -10,6 +14,10 @@ in {
   };
 
   config = {
+    programs.regreet = {
+      cageEnv.XDG_DATA_DIRS = lib.map (v: "${v}/share") cfg.sessionPackages;
+    };
+
     services.greetd = let
       envVars = lib.mapAttrsToList (n: v: "\"${n}=\$${n}:${v}\"") cfg.cageEnv;
     in {