[PROBLEM] Installing python modules fails

[postcd]

Thanks, my pip version fits their requirements and command they mention:
sudo apt-get install autoconf automake build-essential libffi-dev libtool pkg-config python3-dev

means like +70MB used (while i already installed maybe 30MB, but i guess there is no "coincurve" python package in the repository

anyway that command helped, even i am not happy it uses that disk space (guessing it is not recommended to remove it now after install). Thank you for help!