dev meeting 20230628

Present: @alizter @emillon @gridbugs @leonidas-from-xiv @lubegasimon @nojb @rgrinberg @rikusilvola @rjbou

• update on release process (@emillon)
  • good discussion regarding milestones
  • this is a "permanent" artifact so it makes sense to use it for something permanent (keeping track of when something has been introduced)
  • release management moved to checklist issues
• dune-build-info and vendored dirs (#8025, @emillon)
  • we agree that picking info from VCS is not correct
  • ideally we'd have something like "the version as vendored in downstream project version X"
  • could have a feature like base version prepended
  • opam-monorepo could make the bridge
  • in the meantime returning None is an improvement
• new benchmarking metrics (@alizter, #8063)
  • what kind of GC info is useful?
  • size of major heap is the most relevant one
• arch_sixtyfour variable
  • different behavior in CI and on Ali's computer
  • versioning: we're laxer than in the rest of dune but that's ok
  • do we need also word_size?
  • in which context are variables evaluated?
• windows regression
  • it has been introduced in 3.8.1 or .2 by a fairly large PR
  • it shouldn't have been backported
  • we don't understand how this can be triggered without watch mode
    • (just after the meeting, an investigation revealed that a queue is created and just polling can trigger race conditions)