Remove flake-utils dependency

See also:
4f399bd5c4/flake.nix (L14)
17198cf5ae

CHANGELOG.md

@@ -14,6 +14,9 @@ Procedure when bumping the version number:
 
 ## Unreleased
 
+### Changed
+- Simplified flake dependencies
+
 ## v0.6.1 - 2023-04-10
 
 ### Changed

flake.lock

@@ -1,20 +1,5 @@
 {
   "nodes": {
-    "flake-utils": {
-      "locked": {
-        "lastModified": 1678901627,
-        "narHash": "sha256-U02riOqrKKzwjsxc/400XnElV+UtPUQWpANPlyazjH0=",
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "rev": "93a2b84fc4b70d9e089d029deacc3583435c2ed6",
-        "type": "github"
-      },
-      "original": {
-        "owner": "numtide",
-        "repo": "flake-utils",
-        "type": "github"
-      }
-    },
     "naersk": {
       "inputs": {
         "nixpkgs": [
@@ -52,7 +37,6 @@
     },
     "root": {
       "inputs": {
-        "flake-utils": "flake-utils",
         "naersk": "naersk",
         "nixpkgs": "nixpkgs"
       }

flake.nix

@@ -3,19 +3,22 @@
 
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs";
-    flake-utils.url = "github:numtide/flake-utils";
 
     naersk.url = "github:nix-community/naersk";
     naersk.inputs.nixpkgs.follows = "nixpkgs";
   };
 
-  outputs = { self, nixpkgs, flake-utils, naersk }: flake-utils.lib.eachDefaultSystem (system:
-    let
-      pkgs = import nixpkgs { inherit system; };
-      naersk' = pkgs.callPackage naersk { };
-    in
-    rec {
-      packages.default = naersk'.buildPackage { src = ./.; };
-    }
-  );
+  outputs = { self, nixpkgs, naersk }:
+    let forAllSystems = nixpkgs.lib.genAttrs nixpkgs.lib.systems.flakeExposed;
+    in {
+      packages = forAllSystems (system:
+        let
+          pkgs = import nixpkgs { inherit system; };
+          naersk' = pkgs.callPackage naersk { };
+        in
+        {
+          default = naersk'.buildPackage { src = ./.; };
+        }
+      );
+    };
 }