Thank you very much Dima. Trying to run sudo apt-get libffi-dev xz-utils liblzma-dev I get E: Invalid operation libffi-dev
Installing the dependencies from the link you provided doesn't get me any error. Running ./configure gets me the following message: real_configure: hint: installing the following system packages, if not already present, is recommended and may avoid having to build them (though some may have to be built anyway): $ sudo apt-get update $ sudo apt-get install meson python3 libpython3-dev python3-setuptools python3-venv Does this mean that python3 is still non recognised? When running sudo apt-get install meson python3 libpython3-dev python3-setuptools python3-venv the only to be installed is meson. Rerunning ./configure I see the following lines in the output: python3: no suitable system package; standard, SPKG version 3.12.5 is already installed python_build: no; standard, SPKG version 1.2.1 will be installed setuptools: no; standard, SPKG version 73.0.1 will be installed meson: no suitable system package; standard, SPKG version 1.7.0 will be installed meson_python: no; standard, SPKG version 0.17.1 will be installed liblzma: SPKG version 5.2.5 is already installed libffi: SPKG version 3.4.6 is already installed xz: SPKG version 5.2.5 is already installed I hope I was clear enough. Thank you for your time, I really appreciate the help. Best regards, Léon -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To view this discussion visit https://groups.google.com/d/msgid/sage-devel/01a9ef18-367a-4b93-a460-c71479978488n%40googlegroups.com.