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PyPy Leysin Winter Sprint (11-19st January 2014)

The next PyPy sprint will be in Leysin, Switzerland, for the ninth time. This is a fully public sprint: newcomers and topics other than those proposed below are welcome.

Goals and topics of the sprint

  • Py3k: work towards supporting Python 3 in PyPy
  • NumPyPy: work towards supporting the numpy module in PyPy
  • STM: work towards supporting Software Transactional Memory
  • And as usual, the main side goal is to have fun in winter sports :-) We can take a day off for ski.

Exact times

For a change, and as an attempt to simplify things, I specified the dates as 11-19 January 2014, where 11 and 19 are travel days. We will work full days between the 12 and the 18. You are of course allowed to show up for a part of that time only, too.

Location & Accomodation

Leysin, Switzerland, "same place as before". Let me refresh your memory: both the sprint venue and the lodging will be in a very spacious pair of chalets built specifically for bed & breakfast: The place has a good ADSL Internet connexion with wireless installed. You can of course arrange your own lodging anywhere (as long as you are in Leysin, you cannot be more than a 15 minutes walk away from the sprint venue), but I definitely recommend lodging there too -- you won't find a better view anywhere else (though you probably won't get much worse ones easily, either :-)

Please confirm that you are coming so that we can adjust the reservations as appropriate. The rate so far has been around 60 CHF a night all included in 2-person rooms, with breakfast. There are larger rooms too (less expensive per person) and maybe the possibility to get a single room if you really want to.

Please register by Mercurial:

or on the pypy-dev mailing list if you do not yet have check-in rights:

You need a Swiss-to-(insert country here) power adapter. There will be some Swiss-to-EU adapters around -- bring a EU-format power strip if you have one.


Pim wrote on 2014-01-29 11:57:

Very interested to know how far you got, especially STM

Armin Rigo wrote on 2014-01-29 21:24:

I'll do a proper post about STM, but in the meantime: we progressed on STM-C7, without hitting an obstacle so far, so hopes are high :-)