try cachix

Author: justbuchanan

.github/workflows/nix.yml

@@ -0,0 +1,40 @@
+name: "build and cache w/cachix"
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-and-cache:
+    if: github.event.pull_request.draft == false
+    runs-on: ubuntu-latest
+    timeout-minutes: 200
+
+    steps:
+    - uses: actions/checkout@v4
+
+    - uses: cachix/install-nix-action@v27
+      with:
+        github_access_token: ${{ secrets.GITHUB_TOKEN }}
+
+    # TODO: does this add add anything if we're using cachix?
+    - name: Run the Magic Nix Cache
+      uses: DeterminateSystems/magic-nix-cache-action@main
+
+    - uses: cachix/cachix-action@v15
+      with:
+        name: justbuchanan-oasis
+        authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+
+    - name: Check flake
+      run: nix flake check
+
+    - name: Construct nix env
+      run: nix develop -c echo hi
+
+    - name: build oasis everything
+      run: nix develop -c make