:: 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/slave2/extra-staging-with-build-support-pentium4/root] -> [slave2]...done
==> Making package: python-unearth 0.17.3-1.0 (Thu 27 Mar 2025 11:54:50 CET)
==> Retrieving sources...
  -> Found python-unearth-0.17.3.tar.gz
==> Validating source files with sha512sums...
    python-unearth-0.17.3.tar.gz ... Passed
==> Validating source files with b2sums...
    python-unearth-0.17.3.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-unearth 0.17.3-1.0 (Thu Mar 27 11:54:57 2025)
==> Checking runtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Packages (7) python-anyio-4.6.2.post1-1.0  python-certifi-2024.08.30-1.0  python-h11-0.14.0-4.0  python-httpcore-1.0.5-1.1  python-idna-3.10-1.0  python-sniffio-1.3.1-3.1  python-httpx-0.27.2-1.0

Total Installed Size:  4.66 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-certifi...
installing python-h11...
installing python-httpcore...
Optional dependencies for python-httpcore
    python-h2: for HTTP/2 support
    python-socksio: for SOCKS support
    python-anyio: for asyncio backend [pending]
    python-trio: for trio backend
    python-sniffio: for async support [pending]
installing python-idna...
installing python-sniffio...
installing python-anyio...
Optional dependencies for python-anyio
    python-trio: trio backend
    python-outcome: trio backend
    python-uvloop: use uvloop for asyncio backend
    python-pytest: pytest plugin
installing python-httpx...
Optional dependencies for python-httpx
    python-brotli: for brotli response decompression
    python-brotlicffi: for brotli response decompression
    python-zstandard: for zstd response decompression
    python-h2: HTTP/2 support
    python-socksio: SOCKS proxy support
    python-click: command line client support
    python-rich: command line client support
    python-pygments: command line client support
    python-trio: alternative async library
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Checking buildtime dependencies...
==> Installing missing dependencies...
resolving dependencies...
looking for conflicting packages...

Packages (7) python-pyproject-hooks-1.2.0-3.0  python-pyproject-metadata-0.9.0-1.0  python-tomli-w-1.0.0-7.1  python-build-1.2.2-3.0  python-installer-1-1.0  python-pdm-backend-2.4.3-1.0  python-wheel-1-1.0

Total Installed Size:  2.54 MiB

:: Proceed with installation? [Y/n] 
checking keyring...
checking package integrity...
loading package files...
checking for file conflicts...
:: Processing package changes...
installing python-pyproject-hooks...
installing python-build...
installing python-installer...
installing python-pyproject-metadata...
installing python-tomli-w...
installing python-pdm-backend...
Optional dependencies for python-pdm-backend
    python-setuptools: for setuptools support
    python-editables: for editables backend support
installing python-wheel...
:: Running post-transaction hooks...
(1/1) Arming ConditionNeedsUpdate...
==> Retrieving sources...
  -> Found python-unearth-0.17.3.tar.gz
==> WARNING: Skipping all source file integrity checks.
==> Extracting sources...
  -> Extracting python-unearth-0.17.3.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 'pdm.backend'

ERROR Backend 'pdm.backend' is not available.
==> ERROR: A failure occurred in build().
    Aborting...
==> ERROR: Build failed, check /var/lib/archbuild/slave2/extra-staging-with-build-support-pentium4/slave2/build
used straw: :with_build_support:without_check:
slave2@eurobuild6