change profile, save time and energy emerging @world

[hujuice]

For what I understand, following the instructions (https://wiki.gentoo.org/wiki/Project:Toolchain/23.0_update_instructions), emerging the @world set can be lightened a bit.

[pietinger]

[hujuice]

[sublogic]

[hujuice]

[yzg]

Do we need to emerge emptytree in one hit? Can we just rely on daily world update to do this on slower pace?

Full emptytree emerge will take:

Estimated update time: 3 days, 4 hours, 14 minutes

[hujuice]

[linux_os2]

emerge --ask --emptytree @world took 22hr 1644 reemerges

[setan]

For my ~1500 merges it took under 24 hours.

Why aren't these the official instructions? GCC builds a loong time.

[hujuice]

[yzg]

Is there a problem of NOT doing --emptytree emerge and instead -uvDN emerge?

[Phoenix591]

[figueroa]

[hujuice]

Can I use distcc between two different profiles?
Same toolchain version.

I have two desktops (lots of UI heavy progs) and for some reason I prefer to proceed one by one.
_________________
Who hasn't a spine, should have a method.
Chi non ha carattere, deve pur avere un metodo.

[tld]

Thanks for this suggestion regarding the --exclude! Huge time saver.

Question: Is there any reason to NOT exclude virtual/*? I have to think there's no real compiling there(?).

Thanks!
Tom

[pietinger]

[tld]

[figueroa]

Before proceeding with migrating my x86 system, I made myself a short cheatsheet to follow. It went almost flawlessly, though it took about 26 hours doing the emerge --emptytree, and one program failed to install, media-sound/audacity, which I decided to depclean. With that migration under my belt, I updated the cheatsheet for my other similar x86_64 systems.

With the caution that this is MY cheatsheet and it may not (or probably won't) work for you, so if you like the idea, be sure to adapt it for your own use case:

[tld]

I plan to do something similar to the post by Havin_it referenced above. I'm unclear as to whether or not to use the --keep-going, ad what the ramifications are.

I was wondering in general as to what the options are if something fails etc, in terms of possibly needing to start over completely etc...a bit confused on that.

Tom

[logrusx]

// edited out something I was wrong about

[C5ace]

Just finished 1 Desktop, 3 Laptops and 1 USB drive. All have Gentoo, XFce Libreoffice Thunderbird, Firefox, VLC and lots of other stuff installed.

1.) Changed profile from [12] default/linux/amd64/17.1/no-multilib (exp) to [49] default/linux/amd64/23.0/split-usr/no-multilib (stable) *

2.) Removed CHOST="x86_64-pc-linux-gnu" from /etc/portage/make.conf

3.) emerge -av --update --deep --with-bdeps=y --changed-use --newuse --backtrack=300 --tree --keep-going=y --verbose-conflicts @world

4.) emerge --depclean

5.) revdep-rebuild

Everything is working fine after updating about 250 packages.
_________________
Observation after 30 years working with computers:
All software has known and unknown bugs and vulnerabilities. Especially software written in complex, unstable and object oriented languages such as perl, python, C++, C#, Rust and the likes.

[tld]

[logrusx]

// I edited out something I was wrong about here

Best Regards,
Georgi

[grknight]

[pietinger]