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* Update lean-toolchain for testing leanprover/lean4#8347

* fixes for leanprover/lean4#8347

* Update lean-toolchain for testing leanprover/lean4#8397

* deprecations for leanprover/lean4#8397

* chore: bump to nightly-2025-05-19

* chore: adaptations for nightly-2025-05-19

* Trigger CI for leanprover/lean4#8347

* Update the style linter to use LinterOptions

* Fix test

* chore: adaptations for nightly-2025-05-19 (#25017)



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* chore: bump to nightly-2025-05-20

* Merge master into nightly-testing

* feat: a `grind` test case (#25037)

Adds a test case for `grind` that was previously failing in the presence of Mathlib's typeclass shortcuts. Let's just keep it in Mathlib as a regression test.

Note that this is a PR to `bump/v4.21.0`, as it requires a recent nightly toolchain. (It can still be reviewed and bors'd as any other PR.)

* lake update

* fixes

* fixes

* fixes

* fixes

* fix

* fixes

* fixes

* shake --update

* chore: bump to nightly-2025-05-21

* Update lean-toolchain for testing leanprover/lean4#7352

* lake update

* Trigger CI for leanprover/lean4#7352

* chore: adaptations for nightly-2025-05-21

* chore: adaptations for nightly-2025-05-21 (#25079)



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* chore: adaptations for nightly-2025-05-21

* fix for leanprover/lean4#7352

* remove unneeded List.ofFn_succ from simp sets

* Merge master into nightly-testing

* Merge master into nightly-testing

* Revert "fix for leanprover/lean4#7352"

This reverts commit 38ca408.

* chore: fix some defeq abuse in theorem statements around the `Id` monad (#25098)

Follows on from leanprover/lean4#7352.

This also deprecates:
* `id.mk`, which looks like a porting error
* `Free(Add)(Magma|Semigroup).mul_map_seq`, which is a garbage lemma that both is not meaningfully about the free objects and has defeq abuse everywhere.

* chore: bump to nightly-2025-05-22

* update batteries

* chore: bump to nightly-2025-05-23

* Update lean-toolchain for testing leanprover/lean4#8449

* chore: adaptations for nightly-2025-05-22 (#25110)



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* remove now upstreamed `clear_value`

* Update lean-toolchain for testing leanprover/lean4#8457

* chore: update tests for `Format` bug fix

* Trigger CI for leanprover/lean4#8457

* lake update

* lake update

* fixes

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-24

* fix

* chore: adaptations for nightly-2025-05-24 (#25147)



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* chore: adaptations for nightly-2025-05-24

* Merge master into nightly-testing

* Update lean-toolchain for testing leanprover/lean4#8470

* chore: bump to nightly-2025-05-25

* chore: adaptations for nightly-2025-05-25

* chore: adaptations for nightly-2025-05-25 (#25184)



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* unsimp `List.getElem?_length`

This is solved using `getElem?_neg` now.

* chore: adaptations for nightly-2025-05-25

* Trigger CI for leanprover/lean4#8470

* chore: bump to nightly-2025-05-26

* lake update

* deprecations

* Trigger CI for leanprover/lean4#8449

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-27

* chore: adaptations for nightly-2025-05-27

* Update lean-toolchain for testing leanprover/lean4#8504

* chore: bump to nightly-2025-05-28

* chore: adaptations for nightly-2025-05-27 (#25234)



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* fix

* fix merge

* fix merge again

* deprecations

* deprecations

* fix Archive

* comment out test

* Fix and re-enable directory dependency lint test.

* chore: bump to nightly-2025-05-29

* Use the formatting from the master branch. (Seems to have been a merge that went wrong.)

* lake update

* chore: adaptations for nightly-2025-05-28 (#25295)



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* fix

* Trigger CI for leanprover/lean4#8337

* fixes

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-30

* chore: adaptations for nightly-2025-05-29 (#25306)



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* chore: bump to nightly-2025-05-31

* chore: bump to nightly-2025-06-01

* fix Archive

* chore: adaptations for nightly-2025-06-01 (#25355)



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* chore: bump to nightly-2025-06-02

* chore: adaptations for nightly-2025-06-02 (#25360)



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* Update lean-toolchain for testing leanprover/lean4#8584

* chore: adaptations for nightly-2025-06-02

* chore: bump to nightly-2025-06-03

* fix

* fix

* Update lean-toolchain for testing leanprover/lean4#8610

* fix

* chore: bump to nightly-2025-06-04

* bump toolchain

---------

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* chore: adaptations for nightly-2025-05-21

* fix for leanprover/lean4#7352

* remove unneeded List.ofFn_succ from simp sets

* Merge master into nightly-testing

* Merge master into nightly-testing

* Revert "fix for leanprover/lean4#7352"

This reverts commit 38ca408.

* chore: fix some defeq abuse in theorem statements around the `Id` monad (#25098)

Follows on from leanprover/lean4#7352.

This also deprecates:
* `id.mk`, which looks like a porting error
* `Free(Add)(Magma|Semigroup).mul_map_seq`, which is a garbage lemma that both is not meaningfully about the free objects and has defeq abuse everywhere.

* chore: bump to nightly-2025-05-22

* update batteries

* chore: bump to nightly-2025-05-23

* Update lean-toolchain for testing leanprover/lean4#8449

* chore: adaptations for nightly-2025-05-22 (#25110)



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* remove now upstreamed `clear_value`

* Update lean-toolchain for testing leanprover/lean4#8457

* chore: update tests for `Format` bug fix

* Trigger CI for leanprover/lean4#8457

* lake update

* lake update

* fixes

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-24

* fix

* chore: adaptations for nightly-2025-05-24 (#25147)



Co-authored-by: Kim Morrison <kim@tqft.net>
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* chore: adaptations for nightly-2025-05-24

* Merge master into nightly-testing

* Update lean-toolchain for testing leanprover/lean4#8470

* chore: bump to nightly-2025-05-25

* chore: adaptations for nightly-2025-05-25

* chore: adaptations for nightly-2025-05-25 (#25184)



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* unsimp `List.getElem?_length`

This is solved using `getElem?_neg` now.

* chore: adaptations for nightly-2025-05-25

* Trigger CI for leanprover/lean4#8470

* chore: bump to nightly-2025-05-26

* lake update

* deprecations

* Trigger CI for leanprover/lean4#8449

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-27

* chore: adaptations for nightly-2025-05-27

* Update lean-toolchain for testing leanprover/lean4#8504

* chore: bump to nightly-2025-05-28

* chore: adaptations for nightly-2025-05-27 (#25234)



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* fix

* Update lean-toolchain for testing leanprover/lean4#8519

* fix merge

* fix merge again

* deprecations

* deprecations

* fix Archive

* comment out test

* Fix and re-enable directory dependency lint test.

* chore: bump to nightly-2025-05-29

* Use the formatting from the master branch. (Seems to have been a merge that went wrong.)

* lake update

* chore: adaptations for nightly-2025-05-28 (#25295)



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* fix

* Trigger CI for leanprover/lean4#8337

* Trigger CI for leanprover/lean4#8519

* fixes

* Merge master into nightly-testing

* chore: bump to nightly-2025-05-30

* chore: adaptations for nightly-2025-05-29 (#25306)



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* chore: bump to nightly-2025-05-31

* chore: bump to nightly-2025-06-01

* chore: remove simp attribute when value of argument can not be inferred by simp

* fix Archive

* chore: adaptations for nightly-2025-06-01 (#25355)



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* chore: bump to nightly-2025-06-02

* chore: adaptations for nightly-2025-06-02 (#25360)



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* Update lean-toolchain for testing leanprover/lean4#8584

* chore: adaptations for nightly-2025-06-02

* change phrasing of comments

* chore(Geometry/Manifold): two simp-lemmas can be proven by simp

* fix two lint problems

* Trigger CI for leanprover/lean4#8519

* chore: bump to nightly-2025-06-03

* fix

* fix

* Update lean-toolchain for testing leanprover/lean4#8610

* fix

* revert change in `Mathlib.Data.ZMOD.Basic`

* fix Mathlib/Data/List/EditDistance/Estimator.lean

* give specialized simp lemmas higher prio

* simp can prove these

* simp can prove these

* chore: bump to nightly-2025-06-04

* bump toolchain

* Adapt eqns

* Revert "Adapt eqns"

This reverts commit 34f1f7f.

* Simply remove check for now

* fix a bunch

* fixes?

* chore: adaptations for nightly-2025-06-04

* add `simp low` lemma `injOn_of_eq_iff_eq`

* wip

* wip

* wip

* fix

* Trigger CI for leanprover-community/batteries#1220

* Merge master into nightly-testing

* chore: bump to nightly-2025-06-05

* Kick CI

* Bump lean4-cli

* Bump import-graph

* Kick CI

* update lakefile

* chore: use more robust syntax quotation in Shake

* cleanup lakefile

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