chore(flake): cleaner flake.nix file, update flake.lock

flake.lock

@@ -1,12 +1,30 @@
 {
   "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1747744144,
+        "lastModified": 1748693115,
-        "narHash": "sha256-W7lqHp0qZiENCDwUZ5EX/lNhxjMdNapFnbErcbnP11Q=",
+        "narHash": "sha256-StSrWhklmDuXT93yc3GrTlb0cKSS0agTAxMGjLKAsY8=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "2795c506fe8fb7b03c36ccb51f75b6df0ab2553f",
+        "rev": "910796cabe436259a29a72e8d3f5e180fc6dfacc",
         "type": "github"
       },
       "original": {
@@ -18,6 +36,7 @@
     },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs",
         "rust-overlay": "rust-overlay"
       }
@@ -29,11 +48,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1748054080,
+        "lastModified": 1748918260,
-        "narHash": "sha256-rwFiLLNCwkj9bqePtH1sMqzs1xmohE0Ojq249piMzF4=",
+        "narHash": "sha256-KhXNXQ5IDLvwwYfJ0pXDjwIuisZ2qM6F7fcXjIGZy/4=",
         "owner": "oxalica",
         "repo": "rust-overlay",
-        "rev": "2221d8d53c128beb69346fa3ab36da3f19bb1691",
+        "rev": "c9736155bc1eb7c7cf3a925920850e61c07ab22a",
         "type": "github"
       },
       "original": {
@@ -41,6 +60,21 @@
         "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

@@ -2,37 +2,35 @@
   description = "System information in JSON format for eww";
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
     };
   };
+
   outputs = {
     nixpkgs,
     rust-overlay,
+    flake-utils,
     ...
-  }: let
+  }:
-    supportedSystems = ["x86_64-linux" "aarch64-linux"];
+    flake-utils.lib.eachSystem ["x86_64-linux" "aarch64-linux"] (
-    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
-    pkgsFor = nixpkgs.legacyPackages;
-  in {
-    packages = forAllSystems (system: {
-      default = pkgsFor.${system}.callPackage ./. {};
-    });
-    formatter = forAllSystems (system: nixpkgs.legacyPackages.${system}.alejandra);
-    devShells = forAllSystems (
       system: let
         overlays = [(import rust-overlay)];
-        pkgs = import nixpkgs {inherit system overlays;};
+        pkgs = import nixpkgs { inherit system overlays; };
         rustVersion = pkgs.rust-bin.fromRustupToolchainFile ./rustup-toolchain.toml;
-      in
+        pkgsFor = nixpkgs.legacyPackages;
-        pkgs.mkShell {
+      in {
-          buildInputs = with pkgs; [
+        formatter = pkgs.alejandra;
+        packages.default = pkgsFor.${system}.callPackage ./. {};
+        devShells.default = with pkgs;
+          mkShell {
+            buildInputs = [
               bacon
-            cargo
               rustVersion
             ];
+          };
       }
     );
-  };
 }