trying to install cppy, but nothing happens

[SimonDev666]

i am using kali linux 2024.2 with python3.12.4 in visual studio code 1.91.0
having setup a virtual environment in vs code, then under packages i try to install cppyy. it starts but nothing happens. i have tried cppyy-backend; thats seems to work as the venv packages reflect this - but not when i do it for just cppyy

the venv looks activate, as seen in the terminal prompt in vs code.
when i try from the terminal in vs code, i get this error
└─$ python -m pip install cppyy
Collecting cppyy
Using cached cppyy-3.1.2-py3-none-any.whl
Collecting CPyCppyy==1.12.16 (from cppyy)
Using cached CPyCppyy-1.12.16.tar.gz (211 kB)
Installing build dependencies ... done
Getting requirements to build wheel ... done
Preparing metadata (pyproject.toml) ... done
Collecting cppyy-backend==1.15.2 (from cppyy)
Using cached cppyy_backend-1.15.2-py2.py3-none-linux_x86_64.whl
Collecting cppyy-cling==6.30.0 (from cppyy)
Using cached cppyy_cling-6.30.0-py2.py3-none-manylinux2014_x86_64.whl.metadata (2.0 kB)
Using cached cppyy_cling-6.30.0-py2.py3-none-manylinux2014_x86_64.whl (42.2 MB)
Building wheels for collected packages: CPyCppyy
Building wheel for CPyCppyy (pyproject.toml) ... error
error: subprocess-exited-with-error

× Building wheel for CPyCppyy (pyproject.toml) did not run successfully.
│ exit code: 1
╰─> [14 lines of output]
running bdist_wheel
running build
running build_ext
building 'libcppyy' extension
creating build
creating build/temp.linux-x86_64-cpython-312
creating build/temp.linux-x86_64-cpython-312/src
x86_64-linux-gnu-gcc -fno-strict-overflow -Wsign-compare -DNDEBUG -g -O2 -Wall -fPIC -Iinclude "-I/home/simon/Code/VS Code - Python/.venv/include" -I/usr/include/python3.12 -c src/API.cxx -o build/temp.linux-x86_64-cpython-312/src/API.o -O2 -pthread -std=c++2a -m64 -Wno-cast-function-type -Wno-unknown-warning -Wno-register -Wno-strict-aliasing
In file included from src/API.cxx:2:
src/CPyCppyy.h:35:10: fatal error: Python.h: No such file or directory
35 | #include "Python.h"
| ^~~~~~~~~~
compilation terminated.
error: command '/usr/bin/x86_64-linux-gnu-gcc' failed with exit code 1
[end of output]

note: This error originates from a subprocess, and is likely not a problem with pip.
ERROR: Failed building wheel for CPyCppyy
Failed to build CPyCppyy
ERROR: ERROR: Failed to build installable wheels for some pyproject.toml based projects (CPyCppyy)

any advice please....

[wlav]

Specific error is here:

src/CPyCppyy.h:35:10: fatal error: Python.h: No such file or directory
35 | #include "Python.h"

Apparently, you don't have the Python C-API headers installed. (You can check with something like python -c 'import sysconfig; print(sysconfig.get_path("include"))' to see whether they're really not there or are simply not found.)

I'm not familiar with kali linux, but many distros separate out the Python binaries from the Python headers, with the latter typically called something like python-dev. Install the kali linux equivalent (I think it's this: https://www.kali.org/tools/what-is-python/) and you should be good.

[SimonDev666]

thanks for the advice. it would seem that from 'visual studio code' under the .venv created that adding the cppyy packages fails - nothing happens - no error message.

installed the python dev headers for my version python

sudo apt-get install python3.12-dev

then tried your python -c 'import sysconfig; print(sysconfig.get_path("include"))' showing the '/usr/include/python3.12' so it now installed

installed cppyy from the within 'visual studio code' from a terminal ensuring i am with a .venv (for python3.12.4) and it worked.

just wanted to let you know and for other newbies like myself - many thanks