Python dependencies for each user. Unknowns Error 1 for dependencies quickfix

[Surferlul]

When authenticating in different places, different users are used (gdm, sudo, gnome authentication dialog). Each of these users needs all valid python requirements. This causes dependency issues, because in different contexts, different modules are available. Here is a quickfix, to get all dependencies in line.

You'll want an elevated prompt:

sudo su -

Go to howdy directory, create python venv and activate it

cd /lib64/security/howdy
python3 -m venv .venv
source .venv/bin/activate

Install dependencies:

pip install dlib opencv-python

and finally edit pam.py

- status = subprocess.call(["/usr/bin/python3 " + os.path.dirname(os.path.abspath(__file__)) + "/compare.py " + pamh.get_user() + " &> /dev/null"], shell=True)
+ status = subprocess.call(["/lib64/security/howdy/.venv/bin/python " + os.path.dirname(os.path.abspath(__file__)) + "/compare.py " + pamh.get_user() + " &> /dev/null"], shell=True)

I created this issue, because I had a lot of errors, and they all just boiled down to broken dependencies

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I've searched for similar issues already, and my issue has not been reported yet.

Linux distribution: Fedora 40

Howdy version: 2.6.1

[hlarc]

did you build it from source or did you install an already build version?

[Surferlul]

I installed the fedora package

[hlarc]

Ok i tried to replicate your steps but couldnt seem to find the string or anything comparable in the pam.py.
I checked with apt wich version and it said 2.6.1.

[Surferlul]

In 2.6.1 this is the line you have to change:

howdy/src/pam.py

Line 44 in 3c9537a

status = subprocess.call(["/usr/bin/python3", os.path.dirname(os.path.abspath(__file__)) + "/compare.py", pamh.get_user()])

A more general version of the new line(s) is

howdy_dir = os.path.dirname(os.path.abspath(__file__))
status = subprocess.call([f"{howdy_dir}/.venv/bin/python", f"{howdy_dir}/compare.py", pamh.get_user()])

or

status = subprocess.call([f"{<PATH_TO_YOUR/.venv>}/bin/python", os.path.dirname(os.path.abspath(__file__)) + "/compare.py", pamh.get_user()])