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chore: tidy changelog fragments and test docstring for the VerboseModule removal - #408

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d-v-b wants to merge 1 commit into
fix/4029-pickle-storage-modulefrom
chore/4505-followup

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@d-v-b d-v-b commented Oct 19, 2026

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🤖 AI text below 🤖

The zarr.storage module can now be serialized with cloudpickle. Setting zarr.storage.default_compressor no longer emits a deprecation warning; configure array.v2_default_compressor through zarr.config instead.

This PR cleans up loose ends from zarr-developers#4505 (the VerboseModule removal, closing zarr-developers#4029):

  • Rename changes/4029.bugfix.md to changes/4505.bugfix.md. changes/README.md says the fragment prefix is the pull request number, and towncrier links the entry to pull/<number>.
  • Shorten the bugfix fragment to the user-visible effect.
  • Add changes/4505.removal.md. The deprecation policy in docs/contributing.md asks for a removal fragment when a deprecated API is finally removed.
  • Replace the comment block in test_storage_module_is_picklable with a docstring, matching the neighboring tests.

Ruff, the changelog check, and the affected test pass locally.

Stack bookkeeping

The base branch fix/4029-pickle-storage-module on this fork mirrors the head of zarr-developers#4505 at commit 8bc1b29. Retarget this PR to main once 4505 merges upstream, or cherry-pick the single commit onto the 4505 branch.

🤖 Generated with Claude Code

…ule removal

Rename the changelog fragment from the issue number (4029) to the PR
number (4505), as changes/README.md requires, and shorten it to the
user-visible effect. Add a removal fragment for the dropped
`zarr.storage.default_compressor` deprecation warning, as the
deprecation policy in docs/contributing.md requires when a deprecated
API is finally removed. Replace the comment block in
test_storage_module_is_picklable with a docstring, matching the
neighboring tests.

Assisted-by: ClaudeCode:claude-fable-5-1
Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

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