requirements do not fit other bitcraze repos

[dominiknatter]

Hey everyone,

While following your tutorial about the loco positioning system I stumbled across a requirements mismatch. I first installed the cfclient, which requires pyserial 3.5.x. I later installed the lps-tools repo, which requires pyserial 3.4. Due to recent changes in the behavior of pip, this lead to overwriting my pyserial version 3.5 with 3.4 and printed
ERROR: pip's dependency resolver does not currently take into account all the packages that are installed. This behaviour is the source of the following dependency conflicts. cfclient 2021.4.post13+f25f72d requires pyserial~=3.5, but you have pyserial 3.4 which is incompatible.

I circumvented this problem by adapting the requirements for lps-tools by using pyserial>=3.4 instead of pyserial==3.4 and then installed both cfclient and lps-tools anew. So far I have not encountered any problem with this setup.

Not sure you wanna adapt my "solution", but at least this issue documents the problem for other users.

[krichardsson]

Good catch!

We should probably change it to pyserial~=3.4 to avoid acceptance of 4.0 in the future.