[Duplicity-talk] python3, and a gpg question

[Mike Gorse]

Hi,

I was just testing the imap backend on python 3 and had a couple of 
questions.

Setup.py now has this:
if sys.version_info[:2] < (3, 5):
    print("Sorry, duplicity requires version 3.5 or later of Python.")

This check currently excludes python 2. Is that intended? I thought that 
the plan was for 0.8 to support both python 2 and python 3. If 0.8 will 
actually be python 3 only, then that would probably make it easier to tidy 
up the code in some places, but tox.ini still specifies that the unit 
tests should also be run on 2.7.

Also, I've fixed a few issues with the back end in 
lp:~mgorse/duplicity/0.8-series (mostly string vs. bytes issues and email 
API changes), but I'm getting this error when running list-current-files:

GPGError: GPG Failed, see log below:
===== Begin GnuPG log =====
gpg: AES encrypted data
gpg: gcry_kdf_derive failed: Invalid data
gpg: encrypted with 1 passphrase
gpg: decryption failed: No secret key
===== End GnuPG log =====

I'm wondering whether anyone has seen this; I'm puzzled by it, since it 
doesn't appear to be an issue of the back end corrupting the data, and 
restore works correctly despite list-current-files failing.

Thanks,
-Mike