Use flake-utils that haskell.nix uses (input-output-hk#1988)

* Use flake-utils that haskell.nix uses

* Disable aarch64-linux in ci for now

Author: hamishmack

flake.nix

@@ -139,7 +139,12 @@
       # supported by haskell.nix, e.g. with remote builders, in order to check this flake.
       # If you want to run the tests for just your platform, run `./test/tests.sh` or
       # `nix-build -A checks.$PLATFORM`
-    } // flake-utils.lib.eachSystem [ "x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin" ] (system: rec {
+    } // flake-utils.lib.eachSystem [
+        "x86_64-linux"
+        "x86_64-darwin"
+        # TODO switch back on when ci.iog.io has builders for aarch64-linux
+        # "aarch64-linux"
+        "aarch64-darwin" ] (system: rec {
       legacyPackages = (self.internal.compat { inherit system; }).pkgs;
       legacyPackagesUnstable = (self.internal.compat { inherit system; }).pkgs-unstable;
 

hix/init/flake.nix

@@ -2,7 +2,7 @@
   # This is a template created by `hix init`
   inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
   inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
-  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.flake-utils.follows = "haskellNix/flake-utils";
   outputs = { self, nixpkgs, flake-utils, haskellNix }:
     let
       supportedSystems = [

hix/project/flake.nix

@@ -4,7 +4,7 @@
   description = "Default hix flake";
   inputs.haskellNix.url = "github:input-output-hk/haskell.nix";
   inputs.nixpkgs.follows = "haskellNix/nixpkgs-unstable";
-  inputs.flake-utils.url = "github:numtide/flake-utils";
+  inputs.flake-utils.follows = "haskellNix/flake-utils";
   inputs.src.flake = false;
   outputs = { self, src, nixpkgs, flake-utils, haskellNix }:
     flake-utils.lib.eachSystem [ "EVAL_SYSTEM" ] (system: