ma steam: fix startup

reference: https://github.com/NixOS/nixpkgs/issues/25957

makefu/2configs/tools/games.nix

@@ -1,8 +1,10 @@
 { pkgs, ... }:
 
 {
-  krebs.per-user.makefu.packages = with pkgs; [
-    steam
+  imports = [
+    ../steam.nix
+  ];
+  users.users.makefu.packages = with pkgs; [
     games-user-env
   ];
 }

makefu/2configs/tools/steam.nix

@@ -1,6 +1,10 @@
 {pkgs, ...}:
 {
-  environment.systemPackages = [ pkgs.steam ];
+  environment.systemPackages = [ 
+    (pkgs.steam.override {
+      newStdcpp = true;
+    })
+  ];
   hardware.opengl.driSupport32Bit = true;
   hardware.pulseaudio.support32Bit = true;
 }