feat: rewrite to more nixy flakes

pkgs/default.nix

@@ -1,32 +1,22 @@
-{
-    pkgs ? import <nixpkgs> { config.allowUnfree = true; },
-    config ? (import <nixpkgs/nixos> { }).config,
-    fetchzip ? pkgs.fetchzip,
-    ...
-}:
+final: prev:
 
 let
-    system = {
-        stateVersion = config.system.stateVersion;
-    };
-    use = path: pkgs.callPackage (import path) { inherit pkgs; };
+    fetchzip = prev.fetchzip;
+    use = path: prev.callPackage (import path) { pkgs = prev; };
 in
 {
-    inherit system;
-
-    wallpaper = use ./wallpaper/default.nix;
-    tetrio.desktop = use ./tetrio/default.nix;
+    wallpaper = use ./wallpaper;
+    tetrio.desktop = use ./tetrio;
     tetrio.plus =
         let
             repo = {
                 owner = "UniQMG";
                 name = "tetrio-plus";
                 job = "11675178434";
-                hash = "sha256-j3ACcnT64eMQtWYDGOE2oGXpnN5EUqk+lyV6ARBEtU8=";
             };
             src = fetchzip {
                 url = "https://gitlab.com/${repo.owner}/${repo.name}/-/jobs/${repo.job}/artifacts/raw/app.asar.zip";
-                hash = repo.hash;
+                hash = "sha256-j3ACcnT64eMQtWYDGOE2oGXpnN5EUqk+lyV6ARBEtU8=";
             };
         in
         "${src}/app.asar";
@@ -34,25 +24,11 @@ in
         simple-connected = use ./tetrio/skins/simple-connected.nix;
     };
 
-    leveldb-cli = use ./leveldb/default.nix;
+    leveldb-cli = use ./leveldb;
 
-    config.neovim = use ./neovim/default.nix;
-    config.fish = use ./fish/default.nix;
+    configs.neovim = use ./neovim;
+    configs.fish = use ./fish;
 
-    font.monaco = use ./monaco-font/default.nix;
-
-    home-manager = {
-        module =
-            let
-                home-manager = fetchzip {
-                    url = "https://github.com/nix-community/home-manager/archive/master.tar.gz";
-                    hash = "sha256-UZjPc/d5XRxvjDbk4veAO4XFdvx6BUum2l40V688Xq8=";
-                };
-            in
-            import "${home-manager}/nixos";
-        sharedModules = [
-            ./home-manager/initialFile.nix
-            ./tetrio/module.nix
-        ];
-    };
+    nimbus-roman = use ./nimbus;
+    monaco = use ./monaco-font;
 }