downgrade: auto-skip [sources] deps + resolve julia-version alias to numeric#88
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ChrisRackauckas merged 1 commit intoJun 13, 2026
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…-compat (fix '--julia=lts' invalid spec) Co-Authored-By: Chris Rackauckas <accounts@chrisrackauckas.com> Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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Summary
This branch carries two related fixes to the reusable downgrade workflows. The first (
[sources]auto-skip) already landed onmastervia #87; this PR adds the second (alias→numeric) on the same branch, so the effective diff here is the alias fix.1. Auto-skip
[sources]deps (already merged via #87)Deps declared in a project's
[sources]table are satisfied in-tree by a path/url checkout, not the registry.julia-downgrade-compatrewriting their[compat]to=<floor>yields "Unsatisfiable requirements ... no versions left" on monorepo/path-dep downgrades. Bothdowngrade.ymlandsublibrary-downgrade.ymlnow parse each project's[sources]keys and union them into the effective skip list.2. Resolve
julia-versionalias to numeric for julia-downgrade-compat (this commit)sublibrary-downgrade.ymlforwarded the channel ALIASjulia-version(e.g.lts) straight intojulia-actions/julia-downgrade-compat@v2'sjulia_version:input. The action passes that to its resolver as--julia=lts, which is rejected:Fix: after
julia-actions/setup-julia@v3installs Julia, capture the actual installedmajor.minorintoJULIA_MMand passjulia_version: ${{ env.JULIA_MM }}to the downgrade-compat step. Solts/1/preresolve to the installed numeric (e.g.1.10), a valid compat spec.downgrade.yml(single-package) does NOT forwardjulia_version:to julia-downgrade-compat — it lets the action infer from installed Julia (already numeric) — so it was left unchanged.Validation
actionlintpasses on both workflow files (exit 0).python3 -c "import yaml; yaml.safe_load(...)".NOTE: v1 must be retagged after merge for callers to pick this up. Ignore until reviewed by @ChrisRackauckas.