:: Synchronizing package databases...
 build-support-manual downloading...
 build-support downloading...
 core-staging downloading...
 extra-staging downloading...
 core-testing downloading...
 core downloading...
 extra-testing downloading...
 extra downloading...
:: Starting full system upgrade...
 there is nothing to do
==> Building in chroot for [extra-staging-with-build-support] (pentium4)...
==> Synchronizing chroot copy [/var/lib/archbuild/extra-staging-with-build-support-pentium4/root] -> [build]...done
==> Making package: python-icalendar 6.1.3-2.0 (Sun Apr 20 03:58:46 2025)
==> Retrieving sources...
  -> Updating icalendar git repo...
  -> Found tzdata.patch
==> Validating source files with b2sums...
    icalendar ... Passed
    tzdata.patch ... 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 2025-06-16
==> Making package: python-icalendar 6.1.3-2.0 (Sun Apr 20 03:58:49 2025)
==> Checking runtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Packages (2) python-six-1.16.0-9.1  python-dateutil-2.9.0-5.1

Total Installed Size:  1.11 MiB

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

Packages (15) perl-error-0.17029-7.0  perl-mailtools-2.22-1.0  perl-timedate-2.33-7.0  python-editables-0.5-3.1  python-pathspec-0.12.1-2.1  python-pluggy-1.5.0-3.0  python-pyproject-hooks-1.2.0-3.1  python-setuptools-1-1.3  python-setuptools-scm-8.2.1-1.0  python-trove-classifiers-2024.10.21.16-1.0  git-2.47.1-1.0  python-build-1-1.3  python-hatch-vcs-0.4.0-3.1  python-hatchling-1.25.0-1.0  python-installer-1-1.3

Total Installed Size:  44.65 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing perl-error...
installing perl-timedate...
installing perl-mailtools...
installing git...
Optional dependencies for git
    tk: gitk and git gui
    openssh: ssh transport and crypto
    perl-libwww: git svn
    perl-term-readkey: git svn and interactive.singlekey setting
    perl-io-socket-ssl: git send-email TLS support
    perl-authen-sasl: git send-email TLS support
    perl-mediawiki-api: git mediawiki support
    perl-datetime-format-iso8601: git mediawiki support
    perl-lwp-protocol-https: git mediawiki https support
    perl-cgi: gitweb (web interface) support
    python: git svn & git p4 [installed]
    subversion: git svn
    org.freedesktop.secrets: keyring credential helper
    libsecret: libsecret credential helper [installed]
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-setuptools...
installing python-setuptools-scm...
installing python-hatch-vcs...
installing python-installer...
:: Running post-transaction hooks...
(1/4) Creating system user accounts...
Creating group 'git' with GID 972.
Creating user 'git' (git daemon user) with UID 972 and GID 972.
(2/4) Reloading system manager configuration...
  Skipped: Current root is not booted.
(3/4) Arming ConditionNeedsUpdate...
(4/4) Warn about old perl modules
==> Retrieving sources...
  -> Found tzdata.patch
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Creating working copy of icalendar git repo...
Cloning into 'icalendar'...
done.
Switched to a new branch 'makepkg'
==> Starting prepare()...
patching file pyproject.toml
Hunk #1 succeeded at 75 with fuzz 1 (offset 2 lines).
==> Starting build()...
* Building 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-with-build-support-pentium4/build/build
used straw: :with_build_support:without_check:
build@euronuc.lan