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tydeu merged 3 commits into from
Sep 30, 2025
Merged

feat: lake: use system cache for bootstrap #10621

tydeu merged 3 commits into from
Sep 30, 2025

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@tydeu tydeu commented Sep 29, 2025

This PR alters the Lake directory detection so that the core build (i.e., bootstrap = true) is stored in the user cache directory (if available) and never in a toolchain-specific directory.

It is also fixes some issues with cache environment configuration discovered along the way.

@tydeu tydeu added the changelog-no Do not include this PR in the release changelog label Sep 29, 2025
@github-actions github-actions bot added the toolchain-available A toolchain is available for this PR, at leanprover/lean4-pr-releases:pr-release-NNNN label Sep 29, 2025
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leanprover-community-bot commented Sep 29, 2025

Mathlib CI status (docs):

  • ❗ Mathlib CI can not be attempted yet, as the nightly-testing-2025-09-28 tag does not exist there yet. We will retry when you push more commits. If you rebase your branch onto nightly-with-mathlib, Mathlib CI should run now. You can force Mathlib CI using the force-mathlib-ci label. (2025-09-29 23:38:13)

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leanprover-bot commented Sep 29, 2025

Reference manual CI status:

  • ❗ Reference manual CI can not be attempted yet, as the nightly-testing-2025-09-28 tag does not exist there yet. We will retry when you push more commits. If you rebase your branch onto nightly-with-manual, reference manual CI should run now. You can force reference manual CI using the force-manual-ci label. (2025-09-29 23:38:15)

@tydeu tydeu marked this pull request as ready for review September 30, 2025 00:51
@tydeu tydeu enabled auto-merge September 30, 2025 00:52
@tydeu tydeu added this pull request to the merge queue Sep 30, 2025
Merged via the queue into leanprover:master with commit 5d84988 Sep 30, 2025
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@tydeu tydeu deleted the lake/bootstrap-cache-dir branch September 30, 2025 01:41
arthur-adjedj pushed a commit to arthur-adjedj/lean4 that referenced this pull request Oct 6, 2025
@tydeu @arthur-adjedj
feat: lake: use system cache for bootstrap (leanprover#10621)
7908ce8 
This PR alters the Lake directory detection so that the core build
(i.e., `bootstrap = true`) is stored in the user cache directory (if
available) and never in a toolchain-specific directory.

It is also fixes some issues with cache environment configuration
discovered along the way.
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