Switch flake to flake-utils

flake.lock

@@ -1,20 +1,20 @@
 {
   "nodes": {
-    "flake-parts": {
+    "flake-utils": {
       "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
+        "systems": "systems"
       },
       "locked": {
-        "lastModified": 1749398372,
+        "lastModified": 1731533236,
-        "narHash": "sha256-tYBdgS56eXYaWVW3fsnPQ/nFlgWi/Z2Ymhyu21zVM98=",
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
-        "owner": "hercules-ci",
+        "owner": "numtide",
-        "repo": "flake-parts",
+        "repo": "flake-utils",
-        "rev": "9305fe4e5c2a6fcf5ba6a3ff155720fbe4076569",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
         "type": "github"
       },
       "original": {
-        "owner": "hercules-ci",
+        "owner": "numtide",
-        "repo": "flake-parts",
+        "repo": "flake-utils",
         "type": "github"
       }
     },
@@ -34,21 +34,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1748740939,
-        "narHash": "sha256-rQaysilft1aVMwF14xIdGS3sj1yHlI6oKQNBRTF40cc=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "656a64127e9d791a334452c6b6606d17539476e2",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
     "nixpkgs_2": {
       "locked": {
         "lastModified": 1744536153,
@@ -67,7 +52,7 @@
     },
     "root": {
       "inputs": {
-        "flake-parts": "flake-parts",
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs",
         "rust-overlay": "rust-overlay"
       }
@@ -89,6 +74,21 @@
         "repo": "rust-overlay",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

flake.nix

@@ -4,48 +4,40 @@
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     rust-overlay.url = "github:oxalica/rust-overlay";
-    flake-parts.url = "github:hercules-ci/flake-parts";
+    flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs =
-    inputs@{
+    {
-      flake-parts,
+      self,
+      nixpkgs,
       rust-overlay,
-      ...
+      flake-utils,
     }:
-    flake-parts.lib.mkFlake { inherit inputs; } {
+    flake-utils.lib.eachDefaultSystem (
-      systems = [
+      system:
-        "x86_64-linux"
+      let
-        "aarch64-linux"
+        pkgs = import nixpkgs {
-        "aarch64-darwin"
+          inherit system;
-        "x86_64-darwin"
+          overlays = [ (import rust-overlay) ];
-      ];
-      perSystem =
-        {
-          self',
-          pkgs,
-          system,
-          ...
-        }:
-        let
-          packageToml = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package;
-        in
-        {
-          formatter = pkgs.nixfmt-tree;
-
-          _module.args = {
-            pkgs = import inputs.nixpkgs {
-              inherit system;
-              overlays = [ (import rust-overlay) ];
-            };
-          };
-
-          devShells = pkgs.callPackages ./shell.nix { inherit pkgs packageToml self'; };
-
-          packages.default = pkgs.callPackage ./default.nix {
-            inherit packageToml;
-            rust = pkgs.rust-bin.stable.latest.minimal;
-          };
         };
-    };
+
+        packageToml = (builtins.fromTOML (builtins.readFile ./Cargo.toml)).package;
+
+        defaultPackage = pkgs.callPackage ./default.nix {
+          inherit packageToml;
+          rust = pkgs.rust-bin.stable.latest.minimal;
+        };
+      in
+      {
+        formatter = pkgs.nixfmt-tree;
+
+        packages.default = defaultPackage;
+
+        devShells = pkgs.callPackages ./shell.nix {
+          inherit pkgs packageToml;
+          defaultPackage = defaultPackage;
+        };
+      }
+    );
 }

shell.nix

@@ -1,5 +1,5 @@
 {
-  self',
+  defaultPackage,
   pkgs,
   packageToml,
   rust-bin,
@@ -12,7 +12,7 @@ let
     rust:
     mkShell {
       inputsFrom = [
-        (self'.packages.default.override {
+        (defaultPackage.override {
           rust = rust.override {
             extensions = [
               "rust-src"