Yes indeedy, here we are getting clipped again! :-) I presume, perhaps quite naievely, that dev Stylesheets should test against dev TEI, and dev TEI should build with dev Stylesheets. Furthermore that release-7.49.0 Stylesheets should test against release-3.7.0 TEI, and release-3.7.0 TEI should build with release-7.49.0 Stylesheets. But again, that may be just me forgetting some nuance of this you have explained half a dozen times, but will never sit properly in my brain because it is such a slippery mess. I would definitely like it if and when we get Test2/ working thoroughly and can get it to be less fragile (with respect to small changes in TEI) than Test/ that we just drop Test/ and thus this becomes less of a pain. (Even if the same problem, at least it would not be so annoying.)
This is the circular build process again, then.
What version should Stylesheets-dev build against, and what version should Stylesheets-release build against?