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ca9403f981
I got the following error on Pi 2 (using Debian Bookworm armhf arch)
```
...
running bdist_wheel
running build
running build_py
creating build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/lock.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/backend_ctypes.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/_imp_emulation.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/model.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/ffiplatform.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/setuptools_ext.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/error.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/vengine_gen.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/api.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/__init__.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/recompiler.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/cffi_opcode.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/pkgconfig.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/verifier.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/cparser.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/_shimmed_dist_utils.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/commontypes.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/vengine_cpy.py -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/_cffi_include.h -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/parse_c_type.h -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/_embedding.h -> build/lib.linux-armv7l-cpython-311/cffi
copying src/cffi/_cffi_errors.h -> build/lib.linux-armv7l-cpython-311/cffi
running build_ext
building '_cffi_backend' extension
creating build/temp.linux-armv7l-cpython-311/src/c
arm-linux-gnueabihf-gcc -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -fPIC -DFFI_BUILDING=1 -DUSE__THREAD -DHAVE_SYNC_SYNCHRONIZE -I/usr/include/ffi -I/usr/include/libffi -I/freqtrade/.venv/include -I/usr/include/python3.11 -c src/c/_cffi_backend.c -o build/temp.linux-armv7l-cpython-311/src/c/_cffi_backend.o
src/c/_cffi_backend.c:15:10: fatal error: ffi.h: No such file or directory
15 | #include <ffi.h>
| ^~~~~~~
compilation terminated.
error: command '/usr/bin/arm-linux-gnueabihf-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 cffi
Failed to build cffi
ERROR: Failed to build installable wheels for some pyproject.toml based projects (cffi)
[end of output]
note: This error originates from a subprocess, and is likely not a problem with pip.
error: subprocess-exited-with-error
× pip subprocess to install build dependencies did not run successfully.
│ exit code: 1
╰─> See above for output.
note: This error originates from a subprocess, and is likely not a problem with pip.
Failed installing dependencies
```
It can be Easily solved by installing libffi-dev before hand