tests: integration tests only run on linux

Using dependencies that require linux.

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

tests/flake.nix

@@ -34,7 +34,10 @@
 
           integrationTestPackages =
             let
-              tests = import ./integration { inherit pkgs; };
+              tests = import ./integration {
+                inherit pkgs;
+                inherit (pkgs) lib;
+              };
               renameTestPkg = n: lib.nameValuePair "integration-test-${n}";
             in
             lib.mapAttrs' renameTestPkg tests;

tests/integration/default.nix

@@ -1,4 +1,4 @@
-{ pkgs }:
+{ lib, pkgs }:
 
 let
   nixosLib = import "${pkgs.path}/nixos/lib" { };
@@ -13,7 +13,7 @@ let
       hostPkgs = pkgs; # the Nixpkgs package set used outside the VMs
     };
 
-  tests = {
+  tests = lib.optionalAttrs pkgs.stdenv.hostPlatform.isLinux {
     home-with-symbols = runTest ./standalone/home-with-symbols.nix;
     kitty = runTest ./standalone/kitty.nix;
     mu = runTest ./standalone/mu;