Am 06.11.2017 um 22:29 schrieb Marius Bakke:
>> Seems like my message did not go through:
>>
>> This change will not solve out problem!
>>
>> PEP 552 proposes a new file-format for .pyc file and a hash-based
>> mechanism for checking if the .pyc file is recent. This means, you can
>> not backport this changes to Python 3.6 or older. Even if you manage to
>> backport, this would seriously break all tools working on .pyc files.
> We only support Python 2 and the latest (in Guix, anyway!) Python 3
> interpreter.  So while we will indeed need a solution for Python2, we
> don't have to care about older 3.x variants.

This depends on what you call "older 3.5 variants". :-)

The current version is Python 3.6. Guix has 3.5 (and 2.7).

Python 3.7 (which will materialize PEP 552 ) is planed for mid of 2018.

-- 
Regards
Hartmut Goebel

| Hartmut Goebel          | h.goebel@crazy-compilers.com               |
| www.crazy-compilers.com | compilers which you thought are impossible |