ci: remove ./ci.nix

ci.nix

@@ -1,24 +0,0 @@
-let
-  b = builtins;
-  flakeCompatSrc = b.fetchurl "https://raw.githubusercontent.com/edolstra/flake-compat/12c64ca55c1014cdc1b16ed5a804aa8576601ff2/default.nix";
-  flake = (import flakeCompatSrc {src = ./.;}).defaultNix;
-  pkgs = import flake.inputs.nixpkgs {};
-  recurseIntoAll = b.mapAttrs (name: val: pkgs.recurseIntoAttrs val);
-
-  dream2nix-repo = import ./examples/dream2nix-repo {
-    dream2nixSource = ./.;
-    inherit pkgs;
-  };
-
-  dream2nix-repo-flake = (import ./examples/dream2nix-repo-flake/flake.nix).outputs {
-    self = dream2nix-repo-flake;
-    dream2nix = flake;
-    nixpkgs = flake.inputs.nixpkgs;
-  };
-in
-  recurseIntoAll {
-    inherit dream2nix-repo dream2nix-repo-flake;
-    checks = flake.checks.x86_64-linux;
-    devShells = flake.devShells.x86_64-linux;
-    packages = flake.packages.x86_64-linux;
-  }

flake.nix

@@ -80,14 +80,17 @@
         dream2nix-shell = mkShell {
           devshell.name = "dream2nix-devshell";
 
-          packages = [
+          packages =
+            [
               pkgs.alejandra
               pkgs.mdbook
-            inputs'.nix-unit.packages.nix-unit
               (pkgs.python3.withPackages (ps: [
                 pkgs.python3.pkgs.black
               ]))
-          ];
+            ]
+            ++ (l.optionals pkgs.stdenv.isLinux [
+              inputs'.nix-unit.packages.nix-unit
+            ]);
 
           commands =
             [

modules/flake-parts/checks.nix-unit.nix

@@ -3,8 +3,11 @@
   perSystem = {
     pkgs,
     inputs',
+    lib,
+    system,
     ...
-  }: {
+  }:
+    lib.optionalAttrs (system == "x86_64-linux") {
       # map all modules in /examples to a package output in the flake.
       checks.nix-unit = pkgs.runCommand "nix-unit-tests" {} ''
         export NIX_PATH=nixpkgs=${pkgs.path}

modules/flake-parts/examples.nix

@@ -105,6 +105,9 @@ in {
   in {
     # map all modules in /examples to a package output in the flake.
     checks =
+      lib.optionalAttrs
+      (system == "x86_64-linux")
+      (
         (lib.mapAttrs (_: drvModules: makeDrv drvModules) allModules)
         // {
           example-repo =
@@ -115,6 +118,7 @@ in {
             .hello;
           example-repo-flake =
             (importFlake (self + /examples/dream2nix-repo-flake/flake.nix)).packages.${system}.hello;
-      };
+        }
+      );
   };
 }