Missing libboost_python for python 3.9

[leberle]

Hi, i have the following situtation: at the moment i cannot upgrade ceph-libs from 17.2.6-2 to 17.2.6-3, im getting the following error:

% sudo pamac install ceph-libs

[...]

-- Found Python3: /usr/bin/python3.9 (found suitable exact version "3.9.17") found components: Interpreter Development 
-- Found ZLIB: /usr/lib/libz.so (found version "1.2.13")  
CMake Error at /usr/lib/cmake/Boost-1.81.0/BoostConfig.cmake:141 (find_package):
  Found package configuration file:

    /usr/lib/cmake/boost_python-1.81.0/boost_python-config.cmake

  but it set boost_python_FOUND to FALSE so package "boost_python" is
  considered to be NOT FOUND.  Reason given by package:

  No suitable build variant has been found.

  The following variants have been tried and rejected:

  * libboost_python27.so.1.81.0 (2.7, Boost_PYTHON_VERSION=3.9)

  * libboost_python311.so.1.81.0 (3.11, Boost_PYTHON_VERSION=3.9)

  * libboost_python27.a (2.7, Boost_PYTHON_VERSION=3.9)

  * libboost_python311.a (3.11, Boost_PYTHON_VERSION=3.9)

Call Stack (most recent call first):
  /usr/lib/cmake/Boost-1.81.0/BoostConfig.cmake:262 (boost_find_component)
  cmake/modules/FindBoost.cmake:597 (find_package)
  CMakeLists.txt:625 (find_package)


-- Configuring incomplete, errors occurred!
==> ERROR: A failure occurred in build().
    Aborting...
Finished with result: exit-code
Main processes terminated with: code=exited/status=4
Service runtime: 14.798s
CPU time consumed: 11.440s

so it looks to me like this somehow wants to use boost-python bindings for python 3.9 but i only have 3.11 there. So i downloaded boost and compiled the libs using --with-python=3.9, which did produce the libs as expected. I copied the 3.9 lib and archive next to the 3.11 under /usr/lib/ =>

$ ls -la /usr/lib/libboost_python*
-rw-r--r-- 1 root root 642150 22. Aug 20:22 /usr/lib/libboost_python27.a
lrwxrwxrwx 1 root root     27 22. Aug 20:22 /usr/lib/libboost_python27.so -> libboost_python27.so.1.81.0
-rwxr-xr-x 1 root root 259432 22. Aug 20:22 /usr/lib/libboost_python27.so.1.81.0
-rw-r--r-- 1 root root 685046 17. Jun 15:26 /usr/lib/libboost_python311.a
lrwxrwxrwx 1 root root     28 17. Jun 15:26 /usr/lib/libboost_python311.so -> libboost_python311.so.1.81.0
-rwxr-xr-x 1 root root 255512 23. Aug 14:20 /usr/lib/libboost_python311.so.1.81.0
-rwxr-xr-x 1 root root 255512 23. Aug 14:19 /usr/lib/libboost_python311.so.1.81.0.bak
-rw-r--r-- 1 root root 667032 23. Aug 14:12 /usr/lib/libboost_python39.a
-rwxr-xr-x 1 root root 344112 23. Aug 13:47 /usr/lib/libboost_python39.so
-rwxr-xr-x 1 root root 344112 23. Aug 14:15 /usr/lib/libboost_python39.so.1.81.0
-rwxr-xr-x 1 root root 344112 23. Aug 13:59 /usr/lib/libboost_python39.so.1.83.0
lrwxrwxrwx 1 root root     27 23. Aug 14:18 /usr/lib/libboost_python3.so -> libboost_python39.so.1.81.0
lrwxrwxrwx 1 root root     27 22. Aug 20:22 /usr/lib/libboost_python.so -> libboost_python27.so.1.81.0

But the error still shows up. For fun and profit i also tried forcing python 3.11 by adding

set(Boost_PYTHON_VERSION "3.11")

to /usr/lib/cmake/Boost-1.81.0/BoostConfig.cmake, and that does result in some building, but then i run into weird errors later where it says that cython was not found (but the module is there, even with the python executable from the error message

All of this feels very wrong, any ideas what the arch-agnostic way of dealing with this would be?

Cheers!

[Aragorn]

• First of all, do not use pamac with sudo. Use it as a regular user — it will ask you for a password when necessary. If you use it with sudo things will break.

• Secondly, the pamac command to install something from the AUR is pamac build, not pamac install — install is for packages from the repository only. Also, upgrading/updating an already installed package requires neither build nor install, but simply pamac update.

• Thirdly, do you really need ceph-libs? That package was dropped from the repository ages ago and was pushed onto the AUR, but it’s unmaintained and broken — that’s why it fails to build.

[leberle]

Good question, i assumed that its required by something important, but apparently it was indeed only required by some qemu rbd package. I dropped both and my problems are gone, everything still seems to work

Thanks for the hints, i usually use the plasma gui for dealing with packages, much appreciated!