Arch Linux

Zoddo

Member

Registered: 2021-06-11

Posts: 7

Bisecting in chroot?

Hello,

Following an issue with mesa I reported on GitLab, I want to bisect the package to make an upstream report.

However, building the mesa-git package requires a ton of makedepends packages, so I tried to build it in a chroot to not trash my system with these dependencies. This is not the first time I make packages this way (using extra-x86_64-build), and the Bisecting bugs with Git wiki page even suggests it as an alternative.

The issue is that the $srcdir exists only in the chroot, and I don't find a way to tell extra-x86_64-build / makearchpkg to not throw away the chroot when rebuilding a second time.

So... how can I make a bisect while building inside a chroot? I've tried using this command, but it still throw away and recreates the chroot as the first step:

extra-x86_64-build -- -- -ef

(-ef is supposed to be passed to makepkg)

According to extra-x86_64-build --help (the command doesn't have a man page), -c (clean the chroot before build) is passed as a default arg to makechrootpkg, but I provide my own args, so it shouldn't use it?

PS: Out of caution, I tried to use makechrootpkg directly, but I can't make it install dependencies (it doesn't find the dependencies on the repo during the first build, I believe extra-x86_64-build is doing something additional to install them).

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,999

Website

Re: Bisecting in chroot?

I would just use a container instead. If you download the Arch bootstrap image it only needs pacman configured and a user added.

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Jin, Jîyan, Azadî

loqs

Member

Registered: 2014-03-06

Posts: 18,603

Re: Bisecting in chroot?

I track the bisection progress outside the chroot after `makepkg -Codd --noprepare` fetches the source. Set the commit for each step in the PKGBUILD, update the checksum and then build in the chroot.

Lone_Wolf

Administrator

From: Netherlands, Europe

Registered: 2005-10-04

Posts: 14,242

Re: Bisecting in chroot?

I use a similar method as loqs .
It's a bit more work but easy to follow/doublecheck .

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Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky