Flake for other systems too

README.md

@@ -9,7 +9,6 @@ You can play around with it via a command-line interface (`RaftExplorer`, which
 
 The Node ecosystem being what it is, it is *strongly* recommended that you use the associated Nix flake to give you an environment in which you can run the Fable UI.
 Simply `nix develop` (optionally `--profile .profile` if you want to persist the configuration into a [profile](https://nixos.org/manual/nix/stable/package-management/profiles.html) so that it doesn't get garbage-collected).
-If you're running on a non-`aarch64-darwin` platform, please feel free to contribute the appropriate changes to `flake.nix`; it should be easy to generalise using e.g. `flake-utils`.
 
 There are pull request checks on this repo, enforcing [Fantomas](https://github.com/fsprojects/fantomas/)-compliant formatting.
 After checking out the repo, you may wish to add a pre-push hook to ensure locally that formatting is complete, rather than having to wait for the CI checks to tell you that you haven't formatted your code.

flake.lock

@@ -45,6 +45,21 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "locked": {
+        "lastModified": 1659877975,
+        "narHash": "sha256-zllb8aq3YO3h8B/U0/J1WBgAL8EX5yWf5pMj3G0NAmc=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "c0e246b9b83f637f4681389ecabcb2681b4f3af0",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "flakeCompat": {
       "flake": false,
       "locked": {
@@ -79,6 +94,7 @@
     "root": {
       "inputs": {
         "alejandra": "alejandra",
+        "flake-utils": "flake-utils",
         "nixpkgs": "nixpkgs"
       }
     },

flake.nix

@@ -5,21 +5,31 @@
       inputs.nixpkgs.follows = "nixpkgs";
       url = "github:kamadorueda/alejandra/3.0.0";
     };
+    flake-utils = {
+      url = "github:numtide/flake-utils";
+    };
   };
 
   outputs = inputs @ {
     self,
     nixpkgs,
     alejandra,
+    flake-utils,
     ...
-  }: {
-    devShell.aarch64-darwin = let
-      system = "aarch64-darwin";
-    in let
-      pkgs = nixpkgs.legacyPackages.aarch64-darwin;
-    in
-      pkgs.mkShell {
-        buildInputs = [alejandra.defaultPackage.aarch64-darwin pkgs.nodejs-14_x pkgs.dotnet-sdk_6 pkgs.darwin.apple_sdk.frameworks.CoreServices];
-      };
-  };
+  }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in {
+        devShell = pkgs.mkShell {
+          buildInputs =
+            [alejandra.defaultPackage.${system} pkgs.nodejs-14_x pkgs.dotnet-sdk_6]
+            ++ (
+              if pkgs.stdenv.isDarwin
+              then [pkgs.darwin.apple_sdk.frameworks.CoreServices]
+              else []
+            );
+        };
+      }
+    );
 }