Dear Debian Packager
I am the upstream developer of a few debian packages (fabio, pyfai...) and
those packages used to rely on numpy.distutils. Since setuptools 60,
this is not more possible so I changed the build system to use mesonpy
(pep517 compliant).
I found it easy to tell the debian packaging helper pybuild to use the
`pyproject.toml` file to build the software instead of the `setup.py`:
`export PYBUILD_SYSTEM=pyproject` in the debian/rules file.
But later on, the meson configuration finds cython as cython3 but complains the
compiler was not found:
```
dh build --with python3,sphinxdoc --buildsystem=pybuild
dh_update_autotools_config -O--buildsystem=pybuild
dh_autoreconf -O--buildsystem=pybuild
dh_auto_configure -O--buildsystem=pybuild
pybuild --configure -i python{version} -p 3.11
dh_auto_build -O--buildsystem=pybuild
pybuild --build -i python{version} -p 3.11
I: pybuild plugin_pyproject:107: Building wheel for python3.11 with "build"
module
I: pybuild base:240: python3.11 -m build --skip-dependency-check --no-isolation
--wheel --outdir
/home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0/.pybuild/cpython3_3.11_pyfai
* Building wheel...
+ meson setup --prefix=/usr
/home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0
/home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0/.mesonpy-0rgp966m/build
--native-file=/home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0/.mesonpy-native-file.ini
-Ddebug=false -Doptimization=2
The Meson build system
Version: 1.0.1
Source dir: /home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0
Build dir:
/home/kieffer/workspace/pyFAI/build/debian12/pyFAI-2023.5.1a0/.mesonpy-0rgp966m/build
Build type: native build
Project name: pyFAI
Project version: 2023.5.1a0
C compiler for the host machine: ccache cc (gcc 12.2.0 "cc (Debian 12.2.0-14)
12.2.0")
C linker for the host machine: cc ld.bfd 2.40
Cython compiler for the host machine: cython3 (cython 0.29.32)
Host machine cpu family: x86_64
Host machine cpu: x86_64
Program cython found: NO
../../meson.build:17:0: ERROR: Program 'cython' not found or not executable
```
I had a similar problem for python3 and it was solved by installing
`python-is-python3`. But there is no such trick for cython ...
Nota: `sudo ln -s /usr/bin/cython3 /usr/bin/cython` addresses the bug but I am
looking for a solution which is compliant with debian packaging !
Thanks for your help.
Jerome
