For Netlify you can build a tar (or binary) of a version of zola that works for you, host it somewhere and then do something like Add custom data output to the comparison · getzola/zola@5d75849 · GitHub
It’s not that much code to write, except adding more tests a bit everywhere. Reviewing Classed syntax highlighting + Line numbers by evan-brass · Pull Request #1242 · getzola/zola · GitHub would also be great
I’ve also created Create test setup for Library · Issue #1480 · getzola/zola · GitHub, not super sexy but would be neat.