Terminal cursor hidden after audit failure

Bug description

After a failed audit, the terminal cursor remains hidden rather than being restored to a visible state. This makes it difficult to use the terminal, unless the cursor is restored with the reset command (which has the downside of clearing the scrollback buffer) or through other more esoteric means (eg: echo -en "\e[?25h").

Reproduction steps

Using the BASH shell:

$ pip-audit -r <(echo django==3.2.12) # terminal cursor is currently visible
Found 2 known vulnerabilities in 1 package
Name   Version ID             Fix Versions
------ ------- -------------- -------------------
django 3.2.12  PYSEC-2022-190 2.2.28,3.2.13,4.0.4
django 3.2.12  PYSEC-2022-191 2.2.28,3.2.13,4.0.4
$ # terminal cursor is now hidden

Expected behavior

The cursor should either remain visible, or be restored to it’s visible state after the command completes.

Platform information

• OS name and version:

$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 20.04.4 LTS
Release:        20.04
Codename:       focal

• pip-audit version (pip-audit -V): pip-audit 2.3.0
• Python version (python -V or python3 -V): Python 3.8.10
• pip version (pip -V or pip3 -V): pip 22.1 from /home/<redacted>/.venv/lib/python3.8/site-packages/pip (python 3.8)

[woodruffw]

@tysonclugg I’ve opened https://github.com/trailofbits/pip-audit/pull/281 with a potential fix. Could you give the changes on that branch a try and let me know if they work for you?

[woodruffw]

Released with 2.3.1.