Telcon: 2022 05 11

Attendees

• Peter Scheibel (host)
• Richarda Butler
• Mark Krentel
• Massimiliano Culpo
• Phil Regier
• Phil Sakievich
• Tammy Dahlgren
• Greg Becker
• Wileam Phan
• Matt Belhorn

Agenda items

• Continue from https://github.com/spack/spack/wiki/Telcon%3A-2022-03-09: Packages with multiple build systems
  • https://github.com/spack/spack/pull/29530: enables conditional variants
  • https://github.com/spack/spack/pull/30411: main implementation
    • A package with two buildsystems, e.g. cmake/autotools would
      • Inherit CMakePackage and AutotoolsPackage
      • Also declare a buildsystem() variant for each
      • The values of that variant must match the inherited buildsystems
        • e.g. in this case buildsystem(cmakelists, autotools)
  • Matt: why call it cmakelists and not cmake
    • Massimiliano: internal details related to name clashing
  • (Peter) What about external package repositories?
• Mark: what happens when a spack external package is specified with prefix /usr/?
  • This should be fine: Spack tries to exclude system paths like /usr/lib when adding -L entries
• Brian: when I get an "unsatisfiable" error, what do I do?
  • Figuring out what is unsatisfiable is hard
  • There's a min-cores option but the message claims this takes hours
  • Matt: running with spack -d or spack --pdb can help examine things
    • Clingo won't output a partially-solved spec
• Wileam: error running tests on package built with a Spack-built gcc@12.1.0
  • See: https://github.com/sourceryinstitute/reference-counter/issues/27
  • Location of failure: Line 42 of https://github.com/sourceryinstitute/reference-counter/blob/main/test/usage_test.f90
    • (That might not be informative since the error message indicates corrupted state which occurred before that point)
  • Gcc has tests for itself: do those fail?

Possible Agenda items

• Upcoming Cray support changes:
  • For 0.18
  • manifest (https://github.com/spack/spack/pull/29652)
  • (Greg) module list cray environments
• (Matt) if we build an environment, and one package fails, then module files are not generated
  • Want spack module refresh but only to generate module files that haven't been generated yet
• Updating compiler wrapper to strip -Werror (optionally): https://github.com/spack/spack/pull/30284
• (Wileam) Adding fpm as a build system
• Default action for concretization in environments: https://github.com/spack/spack/pull/29942#issuecomment-1097287194
• Continue from https://github.com/spack/spack/wiki/Telcon%3A-2022-04-06: warning() directive
• (Wileam) Can't bootstrap llvm@13 and @14 if gold is enabled (which is the default behavior) https://github.com/spack/spack/issues/29350
• How to reorganize the docs?
• Continue from https://github.com/spack/spack/wiki/Telcon%3A-2022-04-13: not in spec syntax