CI failures due to TypeError: cannot inherit frozen dataclass from a non-frozen one

[lbianchi-lbl]

• Something within the past few hours must have happened causing the CI to fail:
  
• This points towards the cause being a dependency being updated (as opposed to a change in the code, since there were no commits merged between the passing and failing CI workflow runs below):
  
• However, at first sight, none of the packages involved in the stack trace have been updated in that timeframe:
  • Pyomo 6.8.1a0 (released a few weeks ago)
  • Pint 0.24.3 (released July 2024)
  • dataclasses is part of the Python standard library, so unlikely to have been changed in a backward-incompatible way within the same Python version

Related

We're aware of this error affecting the following PRs

• Bumping the IDAES tag of Pyomo to check for issues #1523
• Update BSM2-P CSTR Model watertap-org/watertap#1520

[lbianchi-lbl]

From comparing pip list between the passing (LHS) and failing (RHS) runs, there are two differences:

[lbianchi-lbl]

It looks like flexparser is the likely culprit, see hgrecco/pint#2074

[blnicho]

@lbianchi-lbl the issue is the latest flexparser not being compatible with pint. See the discussion here: hgrecco/pint#1969

I've temporarily pinned flexparser in #1523

[blnicho]

New pint release is out: https://github.com/hgrecco/pint/releases/tag/0.24.4

[lbianchi-lbl]

New pint release is out: https://github.com/hgrecco/pint/releases/tag/0.24.4

This has been fixed upstream, so I'm closing this issue.