Conference call notes 20190320

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Notes on the 121st EasyBuild conference call, Wednesday Mar 20th 2019 (17:00 - 18:00 CET)

Attendees

Alphabetical list of attendees (7):

• Damian Alvarez (JSC, Germany)
• Fotis Georgatos (SDSC, Switzerland)
• Alan O'Cais (JSC, Germany)
• Mikael Öhman (Chalmers University of Technology, Sweden)
• Åke Sandgren (Umeå University, Sweden)
• Bart Oldeman (ComputeCanada)

Agenda

• update on next EB release
• update Python @ GCCcore
• update on porting of EasyBuild to Python 3
• update on multi_deps support
• Q&A

Update on next EasyBuild release

• Loading Python when using multi-deps
  • may hold release back if included, still some discussion to be had
  • One option is to load one by default
  • ComputeCanada has used depends_on (Lmod)
    • sometimes it is only a build dependency so nothing required
    • also prereq is an option (Lmod)
      • leaves the load responsibility on the user
  • Quite a bit of work in the easyblocks as well needed to fully support this
  • A lot of python packages tend to have a binary associated with them
    • May not work in this case (packages would need to be pretty clean)
• Is multi-python support coupled to new Python packages in the next release?

Update Python @ GCCcore

• Mikael: Working on trying to get the graphics stack up in version and down to GCCcore
  • Mako python package is required for Mesa
    • should we be using multi-python versions already for things like this?
  • Will continue with old approach for the time being and we can progress with multi-python approach at the same time
    • Need the Python easyblock merged anyway
• GTK2 done (has been accepted)
  • GTK3 is in develop
• Mesa is the next step
• Whenever there is a Python binding, now using Python3

Update on porting of EasyBuild to Python3

• Kenneth managed to build a bunch of software with this version
• Not too sure of the exact status though

Update on multi_deps support

• See above

Q&A

• A lot of the X packages are deprecating Autotools for Meson/Ninja

  • Be careful of both meson_options.txt and meson.build
  • May need patches (already seen that in some cases)