setting COLUMNS env var to a number greater than 0 will make the terminal resize to that number of columns.
COLUMNS=80 uvx --from rich-cli rich myscript.py
Note
Not all programs respct the COLUMNS env var, but rich does, and a lot of
stuff I’m building uses rich.
I discovered this when I was trying to make a low effort readme generated from the code, but did not depend on the size of terminal it was ran on.
# justfile
readme:
echo "# Workspaces" > README.md
echo "" >> README.md
echo '``` bash' >> README.md
COLUMNS=80 ./workspaces.py --help >> README.md
echo '```' >> README.md