Thanks Dmitry for pointing me in the right direction! I tried to backport the set of Qt5 and qtwebengine packages and found out what large set of build dependencies it was!
So what I said is true: this requires simultaneous changes in many packages, > even if it's just a rebuild for some of them. > > Yes! Qt5 is indeed a very large project too! I'm sure there is a Lord of the Rings meme that applies here like: "One does not simply backport Qt5" 😄 Simply using the backportpackage tool on qtwebengine-opensource-src started a build dependency hunt that resulted in finding a massive set of Qt5 packages that needed to be backported (without relaxing version constraints). A lot of these eventually resolved into being blocked on circular dependency chains. I was able to spend a few hours on this to visually represent what I found (See Gist linked below): https://gist.github.com/b005fa0ef6e600c6a6e0dfd22dd3e604 I'm not sure how the Debian or Ubuntu teams build and backport Qt5 packages when so many build dependencies resolve circularly. I suppose they must bootstrap this dependency chain somehow, but it seems like more work than I have time to figure out at the moment. Any ideas for how to simplify this? Thanks, - James Cuzella On Sun, Dec 13, 2020 at 10:16 AM Dmitry Shachnev <mity...@ubuntu.com> wrote: > Hi James! > > On Fri, Dec 11, 2020 at 08:43:16PM -0700, James Cuzella wrote: > > I would appreciate any help with figuring out how to get that > > last python3-pyqt5.qtwebengine package to be generated from the pyqt5 > > source package. I'm assuming this is where it comes from, given that all > > the other similarly named ones were generated from that one. Also, the > > Debian package site shows this as the source package: > > https://packages.debian.org/stretch/python3-pyqt5.qtwebengine > > It used to be built from pyqt5 source, but since then it got a new source > package, pyqt5webengine: > > https://launchpad.net/ubuntu/+source/pyqt5webengine > > https://packages.debian.org/sid/source/pyqt5webengine > > -- > Dmitry Shachnev >
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