[PROBLEM] Installing python modules fails

[Nachteule]

Again, look in the log:

Code:

arm-linux-gnueabihf-gcc -pthread -Wno-unused-result -Wsign-compare -DNDEBUG -g -fwrapv -O2 -Wall -g -ffile-prefix-map=/build/python3.9-jS0VHk/python3.9-3.9.2=. -fstack-protector-strong -Wformat -Werror=format-security -g -fwrapv -O2 -g -ffile-prefix-map=/build/python3.9-jS0VHk/python3.9-3.9.2=. -fstack-protector-strong -Wformat -Werror=format-security -Wdate-time -D_FORTIFY_SOURCE=2 -fPIC -I/usr/include/ffi -I/usr/include/libffi -I/usr/include/python3.9 -c c/_cffi_backend.c -o build/temp.linux-armv7l-3.9/c/_cffi_backend.o

There are certainly still quite a few packages missing for the building of the cffi
But you have to find out for yourself which ones they are

(libffi-dev would already be a start)