Current installation instruction are insufficient

[MJLagerwerf]

Following the installation instructions, i.e.

$ conda install -c conda-forge xraylib=3.3.0
$ git clone https://github.com/cicwi/flexbox
$ cd flexbox
$ pip install -e .

Results in:

ModuleNotFoundError: No module named 'imageio'

Could you update the dependencies in the setup file?

[ahendriksen]

I have the same problem. (On the conda branch)