Enable the use of `mypy --no-explicit-reexport` on downstream projects

[dkg]

When testing simple python code like this with mypy for type-safety:

import gssapi
gsc:gssapi.SecurityContext
gsc = gssapi.SecurityContext(
       usage='initiate',
       name=gssapi.Name('imap@localhost',
                        gssapi.NameType.hostbased_service))

I see these errors:

0 $ mypy --no-implicit-reexport ./test.py
test.py:3: error: Name "gssapi.SecurityContext" is not defined  [name-defined]
test.py:4: error: Module "gssapi" does not explicitly export attribute "SecurityContext"  [attr-defined]
test.py:4: error: Module "gssapi" does not explicitly export attribute "Name"  [attr-defined]
test.py:4: error: Module "gssapi" does not explicitly export attribute "NameType"  [attr-defined]
Found 4 errors in 1 file (checked 1 source file)
1 $

The same thing happens when using mypy --strict.

a blogpost suggested that the __all__ variable in gssapi/__init__.py might be the way to fix this.

I can confirm that it does clear the error, but I'm not enough of a python module expert to know whether there might be some undesirable side effects as well to making this change. Please review!

Tested on debian testing/unstable, with:

• python3 3.11.6-1
• python3-gssapi 1.8.2-1+b2
• mypy 1.8.0-1

[jborean93]

I'll have to look into why the build is failing, maybe cibuildwheel pushed an update which broke something.

[dkg]

thanks for the prompt review, @jborean93 ! let me know if you need anything else.

[jborean93]

Looks like a temporary problem, rerunning a few hours later and it now works.