Suggestion to make installation easier

[OlgerSiebinga]

I was wondering why you have the following remark block in your installation instructions:

I think it would be easier to add those two packages to the file requirements_klampt.txt. That way they'll be installed automatically, it saves the user an extra action. Or is there any reason I'm missing why that shouldn't be done?

[OlgerSiebinga]

openjournals/joss-reviews#3782

[soraxas]

The reason is because it is not a strict requirement for using the klamp backend (and it is also how klampt suggests their user for installation).

Opengl/pyqt are only used for visualisation, and they are not required for using sbp-env without visualisation. You can use that backend if you simply need to run it headlessly (e.g. benchmark on a server)

For example, if you invoke

python main.py rrt klampt_data/tx90blocks.xml --engine klampt

it will complain

...
    from OpenGL import GL
ModuleNotFoundError: No module named 'OpenGL'

However, you can run experiment headlessly with

python main.py rrt klampt_data/tx90blocks.xml --engine klampt --no-display start 0,0,0,0,0,0 goal 1,1,1,1,1,1

which does not require opengl or pyqt

[OlgerSiebinga]

Alright, that sounds good to me!