[01:38:27] <toad_polo> lazka: Try using a constraints file.
[01:39:29] <toad_polo> If it doesn't work directly, try passing the constraints file via environment variable. `PIP_CONSTRAINTS=...` probably (check that).
[01:40:58] <toad_polo> Too old, though? Is it a public package? I've been hoping to keep a list of these things to argue that overly strict requirements is a bad idea.
[06:53:25] <lazka> toad_polo, thanks, good to know! it's a corner case, so don't bother :) a cext package depending on another cext package which depends on a system library and which is too old in older Ubuntu (pygobject -> pycairo -> cairo -> ubuntu)