On 9 September 2016 at 15:10, Nick Coghlan <ncogh...@gmail.com> wrote: > On 9 Sep 2016 12:32 pm, "Robert Collins" <robe...@robertcollins.net> wrote:
>> tl;dr the ramifications of OR are much deeper than those of AND for >> this problem space, and we don't even have AND solved properly - Issue >> 988. > > Disjoint environment markers provide most of the capabilities we actually > need (like installing one dependency on Py2 and a different one on Py3) > without ever forcing the resolver to make an arbitrary choice between them. Yup :) and we've got that pretty solidly adoptable now - chunk of work that it was ;). > There are currently some bugs even in that, though - installing an sdist or > wheel directly instead of via a requirements file bypasses the environment > marker checks for its direct dependencies :( > > (Steve Kowalik was trying to figure that one out at the PyCon AU sprints, > but I don't believe he was able to track down where the missing check should > go) I didn't mention it before but I should - its my view we should be really conservative about an OR in the dependency language, for the reasons in my earlier email. -Rob _______________________________________________ Distutils-SIG maillist - Distutils-SIG@python.org https://mail.python.org/mailman/listinfo/distutils-sig
