How to use non-installable modules from DAG code?

Question

I have a Git repository which (among other things) holds Airflow DAGs in airflow directory. I have a clone of the repository besides an install directory of Air

Answer 1

Re-writing conclusion from discussions here

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Broadly, there are 2 possible ways

1. Package your code into an Airflow plugin

2. Make your code discoverable to dag-definition-file(s) parsing processes by updating PYTHONPATH. Here again we have following options

   (a) Update PYTHONPATH on system level using bashrc / equivalent (once-and-for-all) or just export the updated PYTHONPATH for current bash session

   (b) Programmatically update sys.path in the beginning of DAG-definition file