better flake?

flake.nix

@@ -1,58 +1,35 @@
 {
-  description = "Nyxi Installer flake";
+  description = "Flake to build and develop Nyxi";
 
   inputs = {
-    nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.11";
+    flake-utils.url = "github:numtide/flake-utils";
+    naersk.url = "github:nix-community/naersk";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
   };
 
-  outputs = { nixpkgs, ... } @ inputs:
-  
-  let
-    system = "x86_64-linux";
-    pkgs = import nixpkgs {
-      inherit system;
-    };
-   in
-   {
-     checks.x86_64-linux.unitTests = (with pkgs; stdenv.mkDerivation {
-       pname = "nyxi-installer";
-       version = "2.0.0";
-       src = builtins.fetchGit {
-         url = "https://gitlab.com/ahoneybun/nyxi-installer.git";
-         ref = "rust-rewrite";
-         rev = "a0c8dafe6186de0c6eebc68d413d08bccd4e2405";
-       };
+  outputs = { self, flake-utils, naersk, nixpkgs }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = (import nixpkgs) {
+          inherit system;
+        };
 
-       buildInputs = with pkgs; [ cargo rustc ];
+        naersk' = pkgs.callPackage naersk {};
 
-       buildPhase = ''
-         cargo test
-       '';
+      in rec {
+        # For `nix build` & `nix run`:
+        defaultPackage = naersk'.buildPackage {
+          LIBCLANG_PATH = "${pkgs.llvmPackages.libclang.lib}/lib";
+          CLANG_PATH = "${pkgs.llvmPackages.clang}/bin/clang";
+          buildInputs = with pkgs; [ pkg-config openssl ];
+          nativeBuildInputs = with pkgs; [ util-linux.dev ];
+          src = ./.;
+        };
 
-     });
-
-     devShells.x86_64-linux.default = pkgs.mkShell {
-       buildInputs = with pkgs; [
-         cargo
-         rustc
-         gnumake
-         clang
-         llvmPackages.libclang
-         llvmPackages.clang
-
-         # System
-         btrfs-progs
-         e2fsprogs
-         openssl
-         pkg-config
-         util-linux
-       ];
-       shellHook = ''
-         export LIBCLANG_PATH="${pkgs.llvmPackages.libclang.lib}/lib"
-         export CLANG_PATH="${pkgs.llvmPackages.clang}/bin/clang"
-         export RUST_BACKTRACE=1
-         echo "Ready to make some Rust!"
-       '';
-     };
-    };
+        # For `nix develop` (optional, can be skipped):
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = with pkgs; [ rustc cargo ];
+        };
+      }
+    );
 }