qtwebengine recompiling again -- 30,000+ compilation modules

[tckosvic]

Compiling qtwebengine is a major pain to compile (8-10 hours). I am now in the middle of compiling it but I have no idea of what rebuild package caused the rebuild of qtwebengine. I have read the wiki about stopping it's compilation that even includes deleting packages that use it if they are not essential to you.

I'd like to get a list of the packages I have installed that would require qtwebengine to recompile. I am not conversant enough with emerge to know how to do this.

I'd also like to get a list of all packages in the repo that use it so I can avoid installing them.

thanks for any instructions. tom kosvic

[Ionen]

It was most likely the icu bump, and it doesn't update all that often (likewise qtwebengine only updates every 1-2 months, qtwebengine-6.7.3 is currently due for August 30)

But if really wanted to, you could do USE=-system-icu on qtwebengine to use bundled icu to avoid needing to rebuild it on icu bumps (not that I typically test bundled icu, but it should be fine).

[Hu]

If you are set on removing qtwebengine, then emerge --ask --verbose --depclean dev-qt/qtwebengine will remove it or explain why not. Once removed, you can use /etc/portage/package.mask to forbid ever installing it again. Any package which tries will provoke an error message from Portage.

[logrusx]

If this is qtwebengine:5 you can use the binary packages host. Slot 6 is still not getting built as it's still testing.

When passing -v to emerge it'll tell you which packages cause rebuilds for which other packages, but to know which packages *may* cause a rebuild is neither easy nor meaningful.

Best Regards,
Georgi

[tckosvic]

I did find the below. I think this is answer to my first question as to what I have installed that uses qtwebengine.

[logrusx]

Equery takes shortcuts. Some things it skips, so it's better to run emerge -pvc.

But from this output I see you can disable qtwebengine on pyside2 and qt6 and dev-qt on freecad and use qtwebengine:5 from the binhost.

Again, emerge -pvc will give you a better picture of what is actually enabled and what pulls in what. Equery deosn't, it just says it might be the case but never really checks if the use flags are actually enabled or not. You have to use it in conjunction with equery u or emerge -pv to see the actual use flags.

p.s. if you have already rebuilt qtwebengine, it's better not to touch anything until the next time you hit it. If you're lucky, it won't bother you for a long time and if you hit it again, then come ask for advise.

Best Regards,
Georgi

[asturm]

[logrusx]

That's great, thanks for letting me know!

Best Regards,
Georgi

[tckosvic]

build of qtwebengine finished. Update took over 14 hours with jopts=5 on i7 cpu. I neglected to put "time"on emerge. But at least it is over.

Just for reference I got the following as alternative for equery but results are the same.

[Hu]

The difference is that emerge -pvc checked the actual dependencies, so now we know you have two packages that definitely require it (before, we knew you had two packages that might require it, but not whether their active configuration required it), and we can inspect those packages for details. I see that freecad guards this behind USE=gui. pyside2 guards it behind USE=webengine. I cannot comment on whether disabling those flags on those packages would remove features you want. I suspect you probably want USE=gui on freecad though.

[tckosvic]

Now I am mystified as to what drew qtwebengine to be recompiled. Neither dev-python/pyside2-5.15.14 or media-gfx/freecad-0.21.2-r3 are in emerge info. These wewre the 2 cited by equery.
Any insights?

emerge info presented below.

[Hu]

I like Ionen's suggestion that the icu update was what triggered a subslot rebuild on qtwebengine. Your most recent post shows basic emerge --info, but since you did not name any packages on that call, it is normal that no packages had per-package information appended to that. I think you have both pyside2 and freecad installed, and they each need qtwebengine for various things. We have not determined whether you need pyside2 and freecad installed. I took it as a given that you want them.

[tckosvic]

I don't understand what icu update means.

I don't know what is meant by: "Your most recent post shows basic emerge --info, but since you did not name any packages on that call"

I have miniconda python system installed. That must bring in pyside2. I don't have any idea of what it is for.

I installed freecad to see if I can get it running on gentoo. There was an article saying it was difficult to install. It was successful. I am not currently using it but I wish to retain it.

Are there options for emerge --info that would be more instructive?

I expected to see either pyside2 or freecad in emerge --info which would provide a reason as to why qtwebengine was recompiled.

[logrusx]

[eschwartz]

There is most definitely a binpackage for qtwebengine:6:

https://distfiles.gentoo.org/releases/amd64/binpackages/23.0/x86-64/dev-qt/qtwebengine/
https://distfiles.gentoo.org/releases/amd64/binpackages/23.0/x86-64-v3/dev-qt/qtwebengine/

[logrusx]

astrum already mentioned that. And I'm quite happy about it :)

Best Regards,
Georgi