Build coverage in CI.

Author: dmjio

.github/workflows/main.yml

@@ -22,7 +22,7 @@ jobs:
           github_access_token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build coverage
-        run: git clone --depth=1 https://github.com/dmjio/miso && cd miso && nix-channel --update && nix-shell -p bun --run 'bun install && bun run test'
+        run: git clone --depth=1 https://github.com/dmjio/miso && cd miso && nix develop --command bash -c "bun install && bun run test"
 
       - name: Upload coverage
         uses: actions/upload-pages-artifact@v3