Feature request: when a build fails for a PR, also try building the same attrpath without merging the PR

[ryantm]

It would be nice if when a build fails, ofborg would try to build the same attrpath on the target branch without the PR merged. I think this would help people merging pull requests. For example, they can be less worried about merging a broken darwin build if it also doesn't build on master.

[timokau]

ofBorg could even retry the build without the PR in question. That probably wouldn't add too much load and may be easier to implement.

[ryantm]

That's a good idea. I'll change the original post to ask for that. For reference it used to be:

Feature request: when a build fails, say if it ever succeeded

It would be nice if when a build fails, the comment says if it ever succeeded in the past. I think this would help people merging pull requests because, for example, they can be less worried about a darwin failure if there is no record of the package ever building successfully on darwin.