[tor-bugs] #10385 [BridgeDB]: Replace BridgeDB's use of python-gpgme with python-gnupg

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#10385: Replace BridgeDB's use of python-gpgme with python-gnupg
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     Reporter:  isis      |      Owner:  isis
         Type:  defect    |     Status:  closed
     Priority:  normal    |  Milestone:
    Component:  BridgeDB  |    Version:
   Resolution:  fixed     |   Keywords:  bridgedb-email, bridgedb-0.3.0
Actual Points:            |  Parent ID:
       Points:            |
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Comment (by isis):

 There is a minor fix on the above branch, and it is in my `hotfix/10385
 -init-gpg-ret`
 [https://gitweb.torproject.org/user/isis/bridgedb.git/log/?h=hotfix/10385
 -init-gpg-ret branch].

 The fix concerns the return value of the
 `bridgedb.crypto.initializeGnuPG()` function when that function's test
 signature creation code (towards the end of the function) fails.

 When the test signing in `bridgedb.crypto.initializeGnuPG()` fails, the
 return value would be `None`, rather than the gpg interface and the
 signing function, `(gpg, gpgSignMessage)`, or `(None, None)` as it does
 with the other failure modes.  This would cause the EmailServerContext to
 raise a TypeError because `None` is not iterable, and cannot be assigned
 to two variables.

 We now return `(None, None)` when the test signing fails.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/10385#comment:5>
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