On MacOS, it is apparently not possible to add an extractor or loader. The issue is always

<flag 'DefinitionSource'> invalid value -2
given 0b1 10
allowed 0b1 11

I saw an earlier thread that this was due to python 3.11, so I downgraded to 3.10.12, uninstalled meltano and then reinstalled (with pipx, but this does not solve the issue.

I just tested with

3.10.12

and it worked fine, so may be running into some weird Python executable resolution error. Can you try reinstalling with pipx using the

--python

option?

pipx install meltano --python 3.10

Thanks Edgar.

pipx install --python python3.10 meltano

solves that problem.