04.08.2022 10:56, Moessbauer, Felix wrote:
> The CI did not report any issues with this patch, but maybe an riscv64 test is missing...
> Either we exclude these community-ports of Debian, or we simply just apply the patches for the architectures we support and we know it works (like armhf, arm64).
>
> Even if this is just a performance thing, in layers with dozens of packages the overhead of just installing the compilers is huge.
> It also bloats the upper-dir of the schroot leading to significant disk consumption.
>
> Jan recently reported that the build time raised a lot when switching an arm64 layer to from ISAR v0.9 to ISAR-next (sbuild).
> Very likely most of that came from the crossbuild-essential packages.
>
> Felix

Hello Felix,

I've just checked mc:qemuriscv64-sid-ports:isar-image-base target 
manually and
it fails with:

| E: Unable to locate package crossbuild-essential-riscv64

on do_rootfs_install task of sbuild-chroot-host recipe, which was 
predictable.
It was not failed on CI because of KFAIL on Sid-Ports targets (they are not
stable enough).

Overall preinstalling is good idea and will improve building speed, but we
should implement it in the right way.