chore: cleanup nix flake

flake.nix

@@ -1,28 +1,17 @@
-# This flake was initially generated by fh, the CLI for FlakeHub (version 0.1.9)
 {
-  description = "Project Template";
+  description = "Atomic Studio CLI";
 
-  inputs = {
-    flake-schemas.url = "https://flakehub.com/f/DeterminateSystems/flake-schemas/*.tar.gz";
-    utility-flake.url = "https://flakehub.com/f/atomic-studio-org/Utility-Flake-Library/*.tar.gz";
-    nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/*.tar.gz";
-  };
+  inputs.nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
 
-  outputs = { self, flake-schemas, nixpkgs, utility-flake }:
+  outputs = { self, nixpkgs }:
     let
       supportedSystems = [ "x86_64-linux" "aarch64-linux" ];
       forEachSupportedSystem = f: nixpkgs.lib.genAttrs supportedSystems (system: f {
         pkgs = import nixpkgs { inherit system; };
       });
     in
     {
-      schemas = flake-schemas.schemas;
-
-      formatter = forEachSupportedSystem ({ pkgs }: pkgs.nixpkgs-fmt);
-
-      checks = forEachSupportedSystem ({ pkgs }: {
-        inherit (utility-flake.checks.${pkgs.system}) pre-commit-check;
-      });
+      formatter = forEachSupportedSystem ({ pkgs }: pkgs.nixfmt-rfc-style);
 
       packages = forEachSupportedSystem ({ pkgs }: rec {
         default = studio;
@@ -34,18 +23,17 @@
           buildInputs = with pkgs; [ podman distrobox ];
 
           buildCommand = ''
-            	    mkdir -p $out/bin $out/libexec
-            	    cp $src/src/${pname} $out/bin
-            	    substituteInPlace $out/bin/${pname} --replace './libexec' "$out/libexec"
-            	    cp -r $src/src/libexec/* $out/libexec
-            	  '';
+            mkdir -p $out/bin $out/libexec
+            cp $src/src/${pname} $out/bin
+            substituteInPlace $out/bin/${pname} --replace './libexec' "$out/libexec"
+            cp -r $src/src/libexec/* $out/libexec
+          '';
         };
-        inherit (utility-flake.packages.${pkgs.system}) cosign-generate;
       });
 
       devShells = forEachSupportedSystem ({ pkgs }: {
         default = pkgs.mkShell {
-          packages = utility-flake.lib.${pkgs.system}.devShellPackages ++ (with pkgs; [ earthly go-task melange apko ]);
+          packages = with pkgs; [ earthly go-task melange apko rpm ];
         };
       });
     };