:: Synchronizing package databases...
 core-staging downloading...
 core-testing downloading...
 core downloading...
 extra-staging downloading...
 extra-testing downloading...
 extra downloading...
:: Starting full system upgrade...
 there is nothing to do
==> Building in chroot for [extra-staging] (pentium4)...
==> Synchronizing chroot copy [/var/lib/archbuild/extra-staging-pentium4/root] -> [build]...done
==> Making package: python-flufl.i18n 5.1.0-3.0 (Thu May  8 13:50:20 2025)
==> Retrieving sources...
  -> Found flufl.i18n-5.1.0.tar.gz
==> Validating source files with sha512sums...
    flufl.i18n-5.1.0.tar.gz ... Passed
==> Validating source files with b2sums...
    flufl.i18n-5.1.0.tar.gz ... Passed
gpg: Warning: using insecure memory!
==> Appending keys from archlinux32.gpg...
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
gpg: Warning: using insecure memory!
==> Updating trust database...
gpg: Warning: using insecure memory!
gpg: next trustdb check due at 2025-07-01
==> Making package: python-flufl.i18n 5.1.0-3.0 (Thu May  8 13:50:23 2025)
==> Checking runtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Package (1)                    New Version  Net Change

extra-testing/python-atpublic  5.0-1.0        0.02 MiB

Total Installed Size:  0.02 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-atpublic...
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Package (11)                            New Version        Net Change  Download Size

extra-staging/python-editables          0.5-3.1              0.03 MiB               
extra-staging/python-iniconfig          2.0.0-5.1            0.04 MiB               
extra-staging/python-pathspec           0.12.1-2.1           0.23 MiB               
extra-staging/python-pluggy             1.5.0-3.0            0.20 MiB               
extra-staging/python-pyproject-hooks    1.2.0-3.1            0.10 MiB               
extra-testing/python-trove-classifiers  2024.10.21.16-1.0    0.12 MiB               
extra-staging/python-build              1.2.2-3.1            0.20 MiB               
extra-testing/python-hatchling          1.25.0-1.0           1.06 MiB               
extra-staging/python-installer          0.7.0-10.0           0.17 MiB               
extra-testing/python-pytest             1:8.3.3-1.0          3.90 MiB               
extra-staging/python-sybil              6.0.3-3.0            0.30 MiB       0.06 MiB

Total Download Size:   0.06 MiB
Total Installed Size:  6.35 MiB

:: Proceed with installation? [Y/n] 
:: Retrieving packages...
 python-sybil-6.0.3-3.0-any downloading...
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-pyproject-hooks...
installing python-build...
installing python-pathspec...
installing python-pluggy...
installing python-editables...
installing python-trove-classifiers...
installing python-hatchling...
installing python-installer...
installing python-sybil...
installing python-iniconfig...
installing python-pytest...
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Retrieving sources...
  -> Found flufl.i18n-5.1.0.tar.gz
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Extracting flufl.i18n-5.1.0.tar.gz with bsdtar
==> Starting build()...
* Getting build dependencies for wheel...

Traceback (most recent call last):
  File "/usr/lib/python3.13/site-packages/pyproject_hooks/_impl.py", line 402, in _call_hook
    raise BackendUnavailable(
    ...<4 lines>...
    )
pyproject_hooks._impl.BackendUnavailable: Cannot import 'hatchling.build'

ERROR Backend 'hatchling.build' is not available.
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /var/lib/archbuild/extra-staging-pentium4/build/build
used straw: :mirrored_source_by_hash:
build@euronuc.lan