Use omnix in CI

.github/workflows/main.yml

@@ -3,31 +3,30 @@ on:
 
 jobs:
   build:
-  #   strategy:
-  #     matrix:
-  #       os: [ubuntu-latest, macOS-latest]
-  #       host: [wash, mal, hinge]
+    strategy:
+      matrix:
+        os: [ubuntu-latest, macOS-latest]
 
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.os }}
 
     steps:
-    - name: Maximize build space
-      shell: bash
-      run: |
-          df -h
-          sudo rm -rf /usr/share/dotnet
-          sudo rm -rf /usr/local/lib/android
-          sudo rm -rf /opt/ghc
-          sudo rm -rf /opt/hostedtoolcache/CodeQL
-          sudo docker image prune --all --force
-          sudo docker builder prune -a
-          df -h
+    # - name: Maximize build space
+    #   shell: bash
+    #   run: |
+    #       df -h
+    #       sudo rm -rf /usr/share/dotnet
+    #       sudo rm -rf /usr/local/lib/android
+    #       sudo rm -rf /opt/ghc
+    #       sudo rm -rf /opt/hostedtoolcache/CodeQL
+    #       sudo docker image prune --all --force
+    #       sudo docker builder prune -a
+    #       df -h
     - uses: actions/checkout@v4
     - uses: DeterminateSystems/nix-installer-action@v16
     - uses: cachix/cachix-action@v16
       with:
         name: tmayoff
         authToken: '${{ secrets.CACHIX_AUTH }}'
-    - run: |
-        nix build ./dot_config/flake#nixosConfigurations.wash.config.system.build.toplevel --cores 1 -j1
-        
+    - name: Install omnix
+      run: nix --accept-flake-config profile install "github:juspay/omnix"
+    - run: om ci