Python build fails. No such file: Python.h

6

Hello @John_B

the problem seems to be that only the header files for Python 2.7 and Python 3.7 are installed while my application uses Python 3.10.7 (which is officially supported).

$ echo $PYTHON_VERSION 
3.10.7

$ lsb_release -d
Description:    Debian GNU/Linux 10 (buster)

$ apt list | grep libpython | grep dev
libpython-all-dev/now 2.7.16-1 amd64 [installed,local]
libpython-dev/now 2.7.16-1 amd64 [installed,local]
libpython2-dev/now 2.7.16-1 amd64 [installed,local]
libpython2.7-dev/now 2.7.16-2+deb10u1 amd64 [installed,local]
libpython3-dev/now 3.7.3-1 amd64 [installed,local]
libpython3.7-dev/now 3.7.3-2+deb10u3 amd64 [installed,local]

Installing a package from PyPI that requires compiling works fine for the system-level Python version (in this case Python 3.7):

$ /usr/local/bin/python --version
Python 3.7.10

$ /usr/local/bin/python -m pip install --no-binary :all: hiredis
Defaulting to user installation because normal site-packages is not writeable
Collecting hiredis
  Using cached hiredis-2.0.0.tar.gz (75 kB)
  Preparing metadata (setup.py) ... done
Skipping wheel build for hiredis, due to binaries being disabled for it.
Installing collected packages: hiredis
  Running setup.py install for hiredis ... done
Successfully installed hiredis-2.0.0

When installing a package using pip on Python 3.10, on the other hand, it fails:

$ which python
/opt/render/project/src/.venv/bin/python

$ python --version
Python 3.10.7

$ python -m pip install hiredis
  […] snip
  gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -Ivendor -I/opt/render/project/src/.venv/include -I/opt/python-installer/Python-3.10.7/include/python3.10 -c src/hiredis.c -o build/temp.linux-x86_64-cpython-310/src/hiredis.o
  In file included from src/hiredis.c:1:
  src/hiredis.h:4:10: fatal error: Python.h: No such file or directory
  #include <Python.h>
           ^~~~~~~~~~
  compilation terminated.
  error: command '/usr/bin/gcc' failed with exit code 1

Is it possible to add the required header files for all supported Python versions?

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