Git clone install is broken

[nihil-admirari]

README command

git clone 'https://github.com/Ajatt-Tools/FlexibleGrading.git' ~/.local/share/Anki2/addons21/FlexibleGrading

lacks --recurse-submodules. Adding it asks for SSH password, since ajt_common submodule uses SSH [email protected]:Ajatt-Tools/ajt_common.git instead of HTTPS.

Fixing this issue is troublesome:

1. Using HTTPS for submodule would require manual adjustment of submodule remotes in order to do pushes.
2. Apparently .gitmodules doesn't allow one to specify a separate push URL, which would've allowed HTTPS for pulls and SSH only for pushes, i.e. automating the first option is not possible.
3. Using a relative path ../ajt_common.git will not work for someone who forked only the addon without forking the submodule.

[tatsumoto-ren]

Added --recurse-submodules to the readme. I think it's better if it asks for the ssh password than if it fails.

You can also use ssh for everything, including the main git clone.

[nihil-admirari]

You can also use ssh for everything, including the main git clone.

I'd rather not. It requires either inputting the password for every operation or running an ssh-agent in a terminal window that never closes. And if someone manages to get access to that terminal, the ssh-agent will grant him access to my GitHub with no questions asked.

[tatsumoto-ren]

If you run ssh-agent in background before launching a desktop session, you won't need to have a terminal window open all the time. Or you can use setsid -f.

[nihil-admirari]

I'm using ssh-agent bound to a specific tty only when pushing for security reasons, not because it can't be done differently.