chore: introduce a darwin builder just for the nix build

Author: samrose

.github/workflows/nix-build.yml

@@ -22,6 +22,8 @@ jobs:
             arch: amd64
           - runner: arm-runner
             arch: arm64
+          - runner: macos-latest
+            arch: arm64
     runs-on: ${{ matrix.runner }}
 
     steps:
@@ -45,17 +47,32 @@ jobs:
         env:
           NIX_SIGN_SECRET_KEY: ${{ secrets.NIX_SIGN_SECRET_KEY }}
       - name: Log in to Docker Hub
+        if: matrix.runner != 'macos-latest'
         uses: docker/login-action@v2
         with:
           username: ${{ secrets.DOCKER_USERNAME }}
           password: ${{ secrets.DOCKER_PASSWORD }}
       - name: Build psql bundle with nix
+        if: matrix.runner != 'macos-latest'
         run: docker build -t base_nix -f docker/nix/Dockerfile .
       - name: Run build psql bundle
+        if: matrix.runner != 'macos-latest'
         run:  |
           docker run -e AWS_ACCESS_KEY_ID=${{ env.AWS_ACCESS_KEY_ID }} \
                     -e AWS_SECRET_ACCESS_KEY=${{ env.AWS_SECRET_ACCESS_KEY }} \
                     -e AWS_SESSION_TOKEN=${{ env.AWS_SESSION_TOKEN }} \
                     base_nix bash -c "./workspace/docker/nix/build_nix.sh"
+      - name: Build psql bundle on macos
+        if: matrix.runner == 'macos-latest'
+        run: |
+          # Replace this with your actual build script
+          cp ./workspace/docker/nix/build_nix.sh ./build_nix.sh
+          sed -i 's/cd workspace//g' ./build_nix.sh
+          ./build_nix.sh
+        env:
+          AWS_ACCESS_KEY_ID: ${{ env.AWS_ACCESS_KEY_ID }}
+          AWS_SECRET_ACCESS_KEY: ${{ env.AWS_SECRET_ACCESS_KEY }}
+          AWS_SESSION_TOKEN: ${{ env.AWS_SESSION_TOKEN }}
+
     name: build psql bundle on ${{ matrix.arch }}