refactor: nix flake

flake.lock

@@ -1,5 +1,19 @@
 {
   "nodes": {
+    "flake-compat": {
+      "locked": {
+        "lastModified": 1696426674,
+        "narHash": "sha256-kvjfFW7WAETZlt09AgDn1MrtKzP7t90Vf7vypd3OL1U=",
+        "rev": "0f9255e01c2351cc7d116c072cb317785dd33b33",
+        "revCount": 57,
+        "type": "tarball",
+        "url": "https://api.flakehub.com/f/pinned/edolstra/flake-compat/1.0.1/018afb31-abd1-7bff-a5e4-cff7e18efb7a/source.tar.gz"
+      },
+      "original": {
+        "type": "tarball",
+        "url": "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz"
+      }
+    },
     "flake-utils": {
       "inputs": {
         "systems": "systems"
@@ -20,11 +34,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1723703277,
-        "narHash": "sha256-nk0RaUB5f68BwtXAYy3WAjqFhVKqIl9Z89RGycTa2vk=",
+        "lastModified": 1724395761,
+        "narHash": "sha256-zRkDV/nbrnp3Y8oCADf5ETl1sDrdmAW6/bBVJ8EbIdQ=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "8b908192e64224420e2d59dfd9b2e4309e154c5d",
+        "rev": "ae815cee91b417be55d43781eb4b73ae1ecc396c",
         "type": "github"
       },
       "original": {
@@ -36,6 +50,7 @@
     },
     "root": {
       "inputs": {
+        "flake-compat": "flake-compat",
         "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }

flake.nix

@@ -3,15 +3,15 @@
 
   inputs = {
     nixpkgs.url = "github:nixos/nixpkgs/nixpkgs-unstable";
+    flake-compat.url = "https://flakehub.com/f/edolstra/flake-compat/1.tar.gz";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
-  outputs = { self, nixpkgs, flake-utils }: {
+  outputs = { self, nixpkgs, flake-utils, ... }: {
     hydraJobs = {
       inherit (self) packages;
     };
-  } // flake-utils.lib.eachDefaultSystem (system:
-  let 
+  } // flake-utils.lib.eachSystem [ "x86_64-linux" "aarch64-linux" ] (system: let
     pkgs = import nixpkgs {
       inherit system;
     };
@@ -20,7 +20,11 @@
       versiajs = pkgs.callPackage ./nix/package.nix {};
       default = self.packages.${system}.versiajs;
     };
-
+  }) // flake-utils.lib.eachDefaultSystem (system: let
+    pkgs = import nixpkgs {
+      inherit system;
+    };
+  in {
     devShells = {
       default = pkgs.mkShell {
         buildInputs = with pkgs; [