:: 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] (i486)...
==> Synchronizing chroot copy [/var/lib/archbuild/extra-staging-with-build-support-i486/root] -> [build]...done
==> Making package: python-frozenlist 1.6.0-1.0 (Wed Apr 23 01:54:00 2025)
==> Retrieving sources...
  -> Found python-frozenlist-1.6.0.tar.gz
==> Validating source files with sha512sums...
    python-frozenlist-1.6.0.tar.gz ... Passed
==> Validating source files with b2sums...
    python-frozenlist-1.6.0.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 2025-06-16
==> Making package: python-frozenlist 1.6.0-1.0 (Wed Apr 23 01:54:10 2025)
==> Checking runtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Packages (2) mpdecimal-4.0.0-2.153  python-3.13.3-1.0

Total Installed Size:  64.34 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing mpdecimal...
installing python...
Optional dependencies for python
    python-setuptools: for building Python packages using tooling that is usually bundled with Python
    python-pip: for installing Python packages using tooling that is usually bundled with Python
    python-pipx: for installing Python software not packaged on Arch Linux
    sqlite: for a default database integration [installed]
    xz: for lzma [installed]
    tk: for tkinter
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Packages (8) python-packaging-24.2-3.1  python-pyproject-hooks-1.2.0-3.1  cython-3.0.11-1.0  python-build-1-1.3  python-expandvars-0.12.0-2.1  python-installer-1-1.3  python-setuptools-1-1.3  python-wheel-1-1.3

Total Installed Size:  33.28 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing cython...
installing python-packaging...
installing python-pyproject-hooks...
installing python-build...
installing python-expandvars...
installing python-installer...
installing python-setuptools...
installing python-wheel...
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Retrieving sources...
  -> Found python-frozenlist-1.6.0.tar.gz
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Extracting python-frozenlist-1.6.0.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 'pep517_backend.hooks'

ERROR Backend 'pep517_backend.hooks' is not available.
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /var/lib/archbuild/extra-staging-with-build-support-i486/build/build
used straw: :with_build_support:without_check:
build@euronuc-i486