Debian systems need: apt-get install libssl-dev python3-pyftpdlib python3-pytest python3-pytest-xdist python3-pytest-timeout lrzsz check Mac systems need: brew install openssl@3 check lrzsz pkg-config pip3 install --break-system-packages pytest pytest-xdist pytest-timeout pyftpdlib On FreeBSD: pkg install -y check lrzsz python3 py312-pip pip install pytest pytest-xdist pytest-timeout pyftpdlib On NetBSD: pkgin -y install check lrzsz py313-pip pip3.13 install pytest pytest-xdist pytest-timeout pyftpdlib Debugging Server-Side Operations: To enable and print the server-side debug logs (even for successful tests), run pytest with xdist disabled (-n0), capturing disabled (-s), and CLI log level set to DEBUG: pytest -s --log-cli-level=DEBUG -n0