It's not possible to use version 2026.9.0 on a Raspberry Pi 4.

[WarC0zes]

Hi,
I tried to update from version 2026.6.0 to 2026.9.0 on a Raspberry Pi 4, but it's not possible.
I've this error in the logs :

Logger: homeassistant.util.package
Source: util/package.py:222
Première occurrence: 06:42:07 (1 occurrence)
Dernier enregistrement: 06:42:07

Unable to install package pymupdf==1.28.2: × Failed to build `pymupdf==1.28.2` ├─▶ The build backend returned an error ╰─▶ Call to `setup.build_wheel` failed (exit status: 1) [stdout] [+0.0s] setup.py:184: <module>(): ### Starting. [+0.0s] setup.py:185: <module>(): os.getcwd()='/tmp/.tmplXt2rv/sdists-v9/pypi/pymupdf/1.28.2/x4g7KLeE_-UziGDq/src' [+0.0s] setup.py:185: <module>(): platform.machine()='aarch64' [+0.0s] setup.py:185: <module>(): platform.platform()='Linux-6.18.39-haos-raspi-aarch64-with-musl1' [+0.0s] setup.py:185: <module>(): platform.python_implementation()='CPython' [+0.0s] setup.py:185: <module>(): platform.python_version()='3.14.6' [+0.0s] setup.py:185: <module>(): platform.system()='Linux' [+0.1s] setup.py:185: <module>(): platform.uname()=uname_result(system='Linux', node='homeassistant', release='6.18.39-haos-raspi', version='#1 SMP PREEMPT Fri Sep 18 04:18:28 UTC 2026', machine='aarch64') [+0.1s] setup.py:185: <module>(): sys.executable='/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN/bin/python' [+0.1s] setup.py:185: <module>(): sys.version='3.14.6 (main, Jun 16 2026, 10:51:59) [GCC 15.2.0]' [+0.1s] setup.py:185: <module>(): sys.version_info=sys.version_info(major=3, minor=14, micro=6, releaselevel='final', serial=0) [+0.1s] setup.py:185: <module>(): list(sys.version_info)=[3, 14, 6, 'final', 0] [+0.1s] setup.py:185: <module>(): sys.prefix='/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN' [+0.1s] setup.py:185: <module>(): sys.base_prefix='/usr/local' [+0.1s] setup.py:185: <module>(): sysconfig.get_config_var("Py_GIL_DISABLED")=0 [+0.1s] setup.py:185: <module>(): sys._is_gil_enabled()=True [+0.1s] setup.py:185: <module>(): CPU bits: 64 [+0.1s] setup.py:185: <module>(): sys.argv (1): [+0.1s] setup.py:185: <module>(): 0: '-c' [+0.1s] setup.py:185: <module>(): os.environ (30): [+0.1s] setup.py:185: <module>(): HASSIO: '172.30.32.2' [+0.1s] setup.py:185: <module>(): HASSIO_TOKEN: 'd4b49aefe6a78d7038aea2eedd2560c0117578224acf0a72b733f955edxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' [+0.1s] setup.py:185: <module>(): HOME: '/root' [+0.1s] setup.py:185: <module>(): HOSTNAME: 'homeassistant' [+0.1s] setup.py:185: <module>(): HTTP_TIMEOUT: '60' [+0.2s] setup.py:185: <module>(): LANG: 'C.UTF-8' [+0.2s] setup.py:185: <module>(): OLDPWD: '/run/s6/legacy-services/home-assistant' [+0.2s] setup.py:185: <module>(): PATH: '/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN/bin:/command:/usr/local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin' [+0.2s] setup.py:185: <module>(): PIP_EXTRA_INDEX_URL: 'https://wheels.home-assistant.io/musllinux-index/' [+0.2s] setup.py:185: <module>(): PWD: '/config' [+0.2s] setup.py:185: <module>(): PYTHONIOENCODING: 'utf-8:backslashreplace' [+0.2s] setup.py:185: <module>(): PYTHONMALLOC: 'mimalloc' [+0.2s] setup.py:185: <module>(): S6_BEHAVIOUR_IF_STAGE2_FAILS: '2' [+0.2s] setup.py:185: <module>(): S6_CMD_WAIT_FOR_SERVICES: '1' [+0.2s] setup.py:185: <module>(): S6_CMD_WAIT_FOR_SERVICES_MAXTIME: '0' [+0.2s] setup.py:185: <module>(): S6_SERVICES_GRACETIME: '240000' [+0.2s] setup.py:185: <module>(): S6_SERVICES_READYTIME: '50' [+0.2s] setup.py:185: <module>(): SHLVL: '2' [+0.2s] setup.py:185: <module>(): SUPERVISOR: '172.30.32.2' [+0.2s] setup.py:185: <module>(): SUPERVISOR_CORE_API_SOCKET: '/run/supervisor/core.sock' [+0.2s] setup.py:185: <module>(): SUPERVISOR_TOKEN: 'd4b49aefe6a78d7038aea2eedd2560c0117578224acf0a72b733f955ed88xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' [+0.2s] setup.py:185: <module>(): TZ: 'Europe/Paris' [+0.2s] setup.py:185: <module>(): UV: '/usr/local/bin/uv' [+0.2s] setup.py:185: <module>(): UV_INTERNAL__BUILD_DIR: '/tmp/.tmplXt2rv/sdists-v9/pypi/pymupdf/1.28.2/x4g7KLeE_-UziGDq/src' [+0.3s] setup.py:185: <module>(): UV_INTERNAL__PARENT_INTERPRETER: '/usr/local/bin/python3' [+0.3s] setup.py:185: <module>(): UV_NO_CACHE: 'true' [+0.3s] setup.py:185: <module>(): UV_SYSTEM_PYTHON: 'true' [+0.3s] setup.py:185: <module>(): VIRTUAL_ENV: '/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN' [+0.3s] setup.py:185: <module>(): __BASHIO_BIN: '/usr/lib/bashio/bashio' [+0.3s] setup.py:185: <module>(): __BASHIO_LIB_DIR: '/usr/lib/bashio' [+0.3s] setup.py:195: <module>(): PYMUPDF_SETUP_URL_WHEEL=None [+0.3s] setup.py:198: <module>(): PYMUPDF_SETUP_DUMMY=None [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:764: __init__(): PIPCL_CHANGE_VERSIONS=None [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:833: build_wheel(): PIPCL_PREBUILT_WHEEL_pymupdf=None [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:1116: tag_platform(): From self.tag_platform_: ret=None. [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:1127: tag_platform(): From AUDITWHEEL_PLAT: ret=None. [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:1142: tag_platform(): From sysconfig.get_platform(): ret='linux_aarch64'. [+0.3s] ../../../../../../builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py:1146: tag_platform(): tag_platform(): returning ret='linux_aarch64'. [+0.3s] setup.py:315: get_mupdf_internal(): get_mupdf_internal(): out='dir' location=None [+0.3s] setup.py:344: get_mupdf_internal(): Download location='https://mupdf.com/downloads/archive/mupdf-1.28.2-source.tar.gz' local_tgz='mupdf-1.28.2-source.tar.gz' name='mupdf-1.28.2-source' [+0.3s] setup.py:354: get_mupdf_internal(): Downloading from location='https://mupdf.com/downloads/archive/mupdf-1.28.2-source.tar.gz' to local_tgz='mupdf-1.28.2-source.tar.gz'. [+7.7s] setup.py:283: tar_extract(): Extracting mupdf-1.28.2-source.tar.gz [+15.4s] setup.py:770: build_mupdf_unix(): Setting XCFLAGS and XCXXFLAGS to predefine TOFU_CJK_EXT. [+15.4s] setup.py:802: build_mupdf_unix(): Running: cc --version [+15.4s] setup.py:802: build_mupdf_unix(): /bin/sh: cc: not found [+15.4s] setup.py:802: build_mupdf_unix(): [stderr] Traceback (most recent call last): File "<string>", line 11, in <module> wheel_filename = backend.build_wheel(__import__("os").fsdecode(b"/tmp/.tmplXt2rv/builds-v0/.tmpjfUG2F"), {}, None) File "/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py", line 909, in build_wheel items = self._call_fn_build(config_settings) File "/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py", line 1220, in _call_fn_build ret = self.fn_build() File "/tmp/.tmplXt2rv/sdists-v9/pypi/pymupdf/1.28.2/x4g7KLeE_-UziGDq/src/setup.py", line 476, in build mupdf_build_dir = build_mupdf_unix( mupdf_local, ...<6 lines>... PYMUPDF_SETUP_FAKE_NOGIL, ) File "/tmp/.tmplXt2rv/sdists-v9/pypi/pymupdf/1.28.2/x4g7KLeE_-UziGDq/src/setup.py", line 802, in build_mupdf_unix pipcl.run(f'{cc} --version') ~~~~~~~~~^^^^^^^^^^^^^^^^^^^ File "/tmp/.tmplXt2rv/builds-v0/.tmp2wzObN/lib/python3.14/site-packages/pipcl/__init__.py", line 3359, in run raise subprocess.CalledProcessError(e, command2, capture_text if capture else None) subprocess.CalledProcessError: Command 'cc --version' returned non-zero exit status 127. hint: Build failures usually indicate a problem with the package or the build environment

Can you correct this?

Core: 2026.9.3
Supervisor: 2026.09.2
HAOS: 18.3

edit:
Claude response:
This error stems from an attempt by Home Assistant to install the Python package pymupdf (version 1.28.2), which fails during compilation. Here is the chain of events:

1. No precompiled wheel available
   For the aarch64 architecture (your HAOS is running on a 64-bit Raspberry Pi) with Python 3.14, there is no ready-to-use binary wheel for pymupdf 1.28.2 on the index being used (wheels.home-assistant.io). Consequently, pip/uv is forced to compile the package from source.

2. Compilation fails: no C compiler
   The log clearly shows this at the end:

setup.py:802: build_mupdf_unix(): Running: cc --version
setup.py:802: build_mupdf_unix(): /bin/sh: cc: not found

The Home Assistant OS container does not include a C compiler (cc, gcc, etc.), which is normal—it is a minimalist environment not designed for compiling native packages. Furthermore, pymupdf bundles the entire MuPDF source code (downloaded separately, as indicated by the .tar.gz file), making it a heavy C/C++ compilation task that is impossible without a toolchain.

[Bidouille28]

I'm hitting the same problem on a Raspberry Pi 5 (aarch64) running HAOS with pdf_scrape 2026.9.0.

Environment:

Hardware: Raspberry Pi 5
platform.machine() = aarch64
platform.platform() = Linux-6.18.39-haos-raspi-aarch64-with-musl1
Python 3.14.6

Error:

Unable to install package pymupdf==1.28.2: × Failed to build pymupdf==1.28.2
├─▶ The build backend returned an error
╰─▶ Call to setup.build_wheel failed (exit status: 1)
...
setup.py:802: build_mupdf_unix(): Running: cc --version
setup.py:802: build_mupdf_unix(): /bin/sh: cc: not found

No prebuilt wheel exists for pymupdf==1.28.2 on linux_aarch64/musl for Python 3.14, so pip/uv falls back to building from source — which fails because HAOS's container has no C compiler (cc) available, and can't have one installed.

Pinning pymupdf to an older version with an existing musllinux/aarch64 wheel (if one worked in an earlier release of this integration) would likely fix it. Happy to test a patched manifest.json if that helps.