schur-complement CI: don't fail install on pyomo download-extensions#667
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DLWoodruff merged 1 commit intoPyomo:mainfrom Apr 19, 2026
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pyomo download-extensions fetches optional artifacts (gjh from netlib.org, mc++, AMPL GSL). Whenever the netlib.org GET hangs (observed ~2.5 min until URLError [Errno 110]), the command exits 1 and the entire schur-complement install step fails. Recent flake-rate is high enough that the user reports the job failing on roughly half of all PRs. mpisppy/tests/test_sc.py only imports parapint, which depends on pymumps (installed via conda above) and PyNumero. Neither gjh nor mc++ is referenced anywhere in the schur-complement path, and pyomo build-extensions builds APPSI/PyNumero C extensions independently of whatever download-extensions managed to fetch. Make the line non-fatal with an explicit warning so transient netlib timeouts no longer red-X the job. If a future test actually needs gjh/mc++, build-extensions will fail loudly and the warning in the log explains why. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## main #667 +/- ##
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- Coverage 70.71% 70.70% -0.02%
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Files 153 153
Lines 19005 19005
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- Hits 13439 13437 -2
- Misses 5566 5568 +2 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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Summary
The
schur-complementjob'sInstall dependenciesstep runspyomo download-extensions, which fetches optional artifacts (gjhfromnetlib.org,mc++, AMPL GSL). Thenetlib.orgGET intermittently hangs (~2.5 min untilURLError [Errno 110]), causingpyomo download-extensionsto exit non-zero and the whole install step to fail. The schur-complement job is currently failing on roughly half of all PRs because of this.mpisppy/tests/test_sc.pyonly importsparapint, which depends onpymumps(installed via conda earlier in the step) and PyNumero. Neithergjhnormc++is referenced anywhere in the Schur-complement path, andpyomo build-extensions(which runs on the next line) builds the APPSI/PyNumero C extensions independently of whateverdownload-extensionsmanaged to fetch.This makes the line non-fatal with an explicit warning. Transient
netlib.orgtimeouts no longer red-X the job. If a future test actually needsgjh/mc++,build-extensionswill fail loudly and the warning in the log explains why.Test plan
schur-complementjob passes (or, if it fails, that the failure is inTest with pytest, not in the install step).netlib.orgis unhappy.🤖 Generated with Claude Code