Comment by lozenge
5 years ago
Most licenses just require your users to have access to the source code. As all the users are bank employees, this is usually easily achieved. If the license is violated it's only by accidental oversight.
Pretty much everything described is a Python library not a change in the Python interpreter so can be under a proprietary license.
The spirit of open source is a different matter.
As I understand it from a legal point of view the user in this case is the bank, not individual employees running it on the bank's behalf, and the bank already has the code so it's a non-issue.
I know some people think this is contrary to the spirit of open source, but it isn't. One of the goals of open source is so that users can customise the code to their specific use case, with no obligation to share. That's all the banks are doing. They have the same rights as any other user.
This. Even RMS has said many times that a company is a single user/owner of said code, and it doesn't matter who works on it as long as it doesn't leave the company. It's all explained in the GPL but the gist is, if the company only uses it internally/doesn't try to sell the code, they can do whatever TF they want.