preferences: add servicesSettings

move flatpak packages to separate file
add new pulseaudio low latency configuration

remove unneeded packages and disable unused services

dev-environment/default.nix

@@ -3,24 +3,21 @@
   lib,
   pkgs,
   pkgs-edge,
-  userSettings,
+  servicesSettings,
   ...
 }: {
   # Configure the build environment
 
   # Containers and adb should be available by default
-  imports = [
-    ./adb-toolchain.nix
-    # ./nginx.nix # disable temporarily
+  imports =
+    [
+      # Use devenv instead, it's more flexible
+      # and contains a lot of prebuilt packages
+      # configured in home manager
 
-    # Use devenv instead, it's more flexible
-    # and contains a lot of prebuilt packages
-    # configured in home manager
-
-    # ./deprecated/c-toolchain.nix
-    ./deprecated/php.nix
-  ];
-  environment.systemPackages = with pkgs; [
-    rustup
-  ];
+      # ./deprecated/c-toolchain.nix
+      # ./deprecated/php.nix
+    ]
+    ++ lib.optionals servicesSettings.adb [./adb-toolchain.nix]
+    ++ lib.optionals servicesSettings.nginx [./nginx.nix];
 }