Tutor development -- make test fails

Hi, when following the instructions from here: https://docs.tutor.overhang.io/tutor.html

after running pip install -r requirements/dev.txt

I try to run make tests

And I get

(tut) user@tutor5:~/code/tutor$ make test
pylint --errors-only --ignore=templates ./tutor ./tests ./bin
************* Module ./tutor
./tutor:1:0: F0001: No module named ./tutor (fatal)
Makefile:30: recipe for target 'test-lint' failed

I am using python 3.7.

What am I doing wrong? Thank you for the help.

You probably need to install tutor itself. This can be achieved by running:

pip install -e .