Migrate both containers to the Anaconda 2026.06 baseline - #95
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Pull request overview
This PR updates the repository’s Dependabot configuration to prevent weekly PR churn from conda scientific-stack upgrades that are intentionally pinned to the Anaconda 2025.12 baseline used across QuantEcon lecture builds.
Changes:
- Adds the pinned conda scientific stack packages (numpy, scipy, pandas, matplotlib, seaborn, sympy, numba, networkx, statsmodels, scikit-learn) to the conda ecosystem
ignorelist. - Adds
anacondato the same ignore list so Dependabot doesn’t propose date-based metapackage bumps (e.g., 2025.12 → 2026.06). - Updates the surrounding comment to accurately describe Dependabot behavior for date-version pins.
This was referenced Jul 8, 2026
All flagship lecture repos now pin `anaconda=2026.06`, so move the containers to match — keeping them reproducible and consistent with the source repos and with each other (the #28 / PR #84 rationale, now retargeted from 2025.12 to 2026.06): - Full `quantecon` image: anaconda 2025.12 -> 2026.06. - Lean `quantecon-build` image: repin the individual scientific stack to the exact anaconda=2026.06 linux-64 py313 (MKL) versions — numpy 2.4.6, scipy 1.17.1, pandas 3.0.3, matplotlib 3.10.9, numba 0.65.1, networkx 3.6.1, statsmodels 0.14.6, scikit-learn 1.8.0 (seaborn 0.13.2 / sympy 1.14.0 unchanged). Resolved via `conda search anaconda=2026.06 --info`; linux-64 keeps MKL as the default BLAS, so the existing mkl pins stand. These are the deliberate coordinated-bump versions — not Dependabot's latest, which overshoot the baseline (numpy 2.5.0, scipy 1.18.0, etc.). Also add the pinned stack + `anaconda` to the Dependabot conda `ignore` list so it holds at 2026.06 until the next coordinated bump, instead of being drifted piecemeal (the #86 / #87 PRs this supersedes). Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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* Release v0.9.0 Moves [Unreleased] into a dated 0.9.0 section and closes the gaps that made the section an inaccurate description of what ships. Minor rather than patch: dropping the bare `build-` restore-key changes default restore behaviour for consumers — an environment.yml change is now a genuine cache miss and a cold build, where it previously restored a _build produced by the superseded environment. Marked BREAKING with a migration note, per the 0.x policy in CONTRIBUTING. Two accuracy fixes were needed before this could be tagged honestly: The Anaconda 2026.06 migration had no entry at all, despite being live in `:latest` since 2026-07-08. Added under Changed. The #28 entry stated the baseline is `anaconda=2025.12`, which stopped being true when #95 landed in this same unreleased block. It now points forward to the migration entry rather than asserting a stale baseline. Also logs the dependabot bumps that reached the composite actions — actions/cache v5 to v6 in build-jupyter-cache, restore-jupyter-cache and setup-environment, and action-gh-release v3.0.1 in publish-gh-pages — which are consumer-facing and were previously unlogged. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> * Address Copilot review on #113 Past-tense the #28 bullet: it asserted the 2025.12 baseline as current fact ('that every lecture repo builds against', 'already pins') while the same release records the move to 2026.06. The forward-pointer alone left two false present-tense claims ahead of it. Drop the version number from the Version History line rather than re-setting it. It was stale at v0.8.0, which is why this PR touched it, and it would have been briefly false again between this merge and the v0 tag move. The latest release is already the topmost dated section. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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What
Moves both container images to the Anaconda 2026.06 baseline — matching the QuantEcon lecture repos, which now all pin
anaconda=2026.06— and holds them there via Dependabot's ignore list.quanteconimage —anaconda=2025.12→anaconda=2026.06.quantecon-buildimage — repins the individually-pinned scientific stack to the exact versionsanaconda=2026.06resolves to on linux-64 / py313 (the MKL build)..github/dependabot.yml— adds the scientific stack +anacondato the condaignoreblock so Dependabot stops re-proposing off-baseline bumps. Supersedes deps: bump the conda group across 1 directory with 7 updates #86 and deps: bump the conda-major group across 2 directories with 2 updates #87.Lean-container versions (2025.12 → 2026.06)
These are the deliberate coordinated-bump versions, resolved authoritatively rather than taken from Dependabot's "latest" — which overshoots the baseline (it proposed numpy 2.5.0, scipy 1.18.0, matplotlib 3.11.0, scikit-learn 1.9.0). linux-64 keeps MKL as the default BLAS, so the existing
mkl/mkl-servicepins are unchanged. Resolved with:conda search 'anaconda=2026.06' --info -c defaults --subdir linux-64Validation
The 2026.06 stack (including the pandas 2→3 jump) is already exercised by the lecture repos' own CI, since they build against
anaconda=2026.06— this PR just brings the containers into line with an already-validated baseline. Note the container tests (test-containers-lectures.yml) run post-merge on:latestviaworkflow_run, so this can't be fully validated pre-merge; worth watching that run once it lands.🤖 Generated with Claude Code