ci: only test pkgs on Linux

.github/workflows/test.yml

@@ -484,7 +484,7 @@ jobs:
       fail-fast: false
       matrix:
         pkg: ["wuffs"]
-    name: Run pkg/${{ matrix.pkg }} tests on Linux
+    name: Test pkg/${{ matrix.pkg }}
     runs-on: namespace-profile-ghostty-sm
     needs: test
     env:
@@ -513,28 +513,3 @@ jobs:
       - name: Test ${{ matrix.pkg }} Build
         run: |
           nix develop -c sh -c "cd pkg/${{ matrix.pkg }} ; zig build test"
-
-  test-pkg-macos:
-    strategy:
-      fail-fast: false
-      matrix:
-        pkg: ["wuffs"]
-    name: Run pkg/${{ matrix.pkg }} tests on macOS
-    runs-on: namespace-profile-ghostty-macos
-    needs: test
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v4
-
-      # Install Nix and use that to run our tests so our environment matches exactly.
-      - uses: cachix/install-nix-action@v30
-        with:
-          nix_path: nixpkgs=channel:nixos-unstable
-      - uses: cachix/cachix-action@v15
-        with:
-          name: ghostty
-          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
-
-      - name: Test ${{ matrix.pkg }} Build
-        run: |
-          nix develop -c sh -c "cd pkg/${{ matrix.pkg }} ; zig build test"