Update build configuration files

flake.nix

@@ -1,30 +1,25 @@
 # Do not edit this file. It is automatically generated by https://www.oliverdavies.uk/build-configs.
+
 {
-  description = "A Nix Flake for build-configs";
+  inputs = {
+    devshell.url = "github:numtide/devshell";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
 
-  inputs.nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  outputs = inputs@{ flake-parts, ... }:
+    flake-parts.lib.mkFlake { inherit inputs; } {
+      imports = [ inputs.devshell.flakeModule ];
 
-  outputs = { nixpkgs, ... }:
-    let
-      system = "x86_64-linux";
-      pkgs = nixpkgs.legacyPackages.${system};
+      systems = [ "x86_64-linux" ];
 
-      inherit (pkgs) mkShell;
-      inherit (pkgs.php) buildComposerProject;
-    in {
-      devShells.${system}.default =
-        mkShell { buildInputs = with pkgs; [ just php82 php82Packages.composer ]; };
-
-        packages.${system}.default = buildComposerProject (finalAttrs: {
-          pname = "build-configs";
-          version = "0.1.0";
-          src = ./.;
-
-          composerLock = ./composer.lock;
-
-          vendorHash = "sha256-HElnPeC88D4kFp39/dikEd2XbqQ3xXOaDR0k48TB2tY=";
-        });
-
-      formatter.${system} = pkgs.nixfmt;
+      perSystem = { config, self', inputs', pkgs, system, ... }: {
+        devshells.default = {
+          packages = with pkgs; [
+            "just"
+            "php82"
+            "php82Packages.composer"
+          ];
+        };
+      };
     };
 }