improved readability

flake.nix

@@ -28,8 +28,7 @@
               environment.systemPackages = [
 
               ]
-              ++ installedPackages.mkBasePackages.packages
-              ++ installedPackages.mkHaxeDevelopmentPackages.packages;
+              ++ installedPackages.mkPackages.packages;
               programs.nix-ld = {
                 enable = true;
                 package = pkgs.nix-ld-rs;

installed-packages/default.nix

@@ -1,17 +1,21 @@
 { pkgs }:
-{
-  mkBasePackages = {
-    packages = [
+let 
+    baseBackages = [
       pkgs.vim
-      pkgs.wget
-      pkgs.git
-      pkgs.curl
       pkgs.nixpkgs-fmt
     ];
-  };
-  mkHaxeDevelopmentPackages = {
-    packages = [
+    utilPackages = [
+      pkgs.wget
+      pkgs.curl
+      pkgs.git
+      pkgs.ffmpeg
+    ];
+    haxeDevelopmentPackages = [
       pkgs.haxe
     ];
+in
+{
+  mkPackages = {
+    packages = baseBackages ++ utilPackages ++ haxeDevelopmentPackages;
   };
 }