Paru fails to build in chroot if makepkg enables ccache

[Zerophase]

Affected Version

1.11.1

Description

If ccache is enabled in makepkg.conf paru fails to build packages in chroot.

Output

paru -s pythonqt --chroot
:: Resolving dependencies...
:: Calculating conflicts...
:: Calculating inner conflicts...

Aur (1) pythonqt-3.4.0-1

:: Proceed to review? [Y/n]: y

:: Downloading PKGBUILDs...
PKGBUILDs up to date
:: Proceed with installation? [Y/n]:
fetching devel info...
:: Synchronizing package databases...
core is up to date
extra is up to date
community is up to date
multilib is up to date
quarry is up to date
sublime-text is up to date
custom 20.0 KiB 189 KiB/s 00:00 [----------------------------------] 100%
:: Starting full system upgrade...
there is nothing to do
==> Synchronizing chroot copy [/var/lib/aurbuild/x86_64/root] -> [zerophase]...done
==> Making package: pythonqt 3.4.0-1 (Wed May 3 00:32:06 2023)
==> Retrieving sources...
-> Found v3.4.0.tar.gz
==> Validating source files with sha512sums...
v3.4.0.tar.gz ... Passed
==> ERROR: Cannot find the ccache binary required for compiler cache usage.
==> ERROR: Build failed, check /var/lib/aurbuild/x86_64/zerophase/build
error: failed to download sources for 'pythonqt-3.4.0-1': failed to run: makechrootpkg -c -r /var/lib/aurbuild/x86_64 -D /home/custompkgs -d /var/cache/pacman/pkg/ -- -ofA:
error: packages failed to build: pythonqt-3.4.0-1

[Morganamilo]

I believe arch uses another process to integrate chroot and ccache, though I don't remember where to find that. As you can see in your error output, the ccache binary can't be found. You could install ccache into the chroo but as each run is a clean chroot, no caching would actually be done.

[sr-tream]

@Morganamilo how I can add ccache in chroot? The flag -I of makechrootpkg require a path to package instead of name. So I can't once add ccache package, because it requires me to update path manualy on each ccache update.