feat: upstream ToExpr deriving handler from Mathlib
#6473
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fix: use prelude in `ToLevel`
fix: ensure `ToLevel.{u}` lives in `Type u` (rather than `Type (u+1)`)
fix: ensure that `ToLevel.{u} : Type`, for all universes `u`
remove old ToLevel pre-merge
use Array.back!
move namespace to Lean.Elab.Deriving.ToExpr
This also ensures that `mkLet` is resolved to `Lean.Elab.Deriving.mkLet` (as intended) instead of `Lean.mkLet`
deriving test cases
The final test case currently fails, exposing a bug when auto implicits are disabled
expand test to actually exercise generated instance
expand tests to include ambient and directly specified universes
expand tests to exercise explicitly provided universes, even when autoImplicits are enabled
fix test by correctly scoping universe
fix: only explicitly declare universe levels that are *not* already present in the ambient context
"fix" test
Turns out I had a typo in the argument list. The problem was not with implicit universes, rather it was with implicit parameters.
Also adds new testcases to expose this bug properly
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ToExpr deriving handler MathlibToExpr deriving handler from Mathlib
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* chore: bump to nightly-2024-12-23 * chore: adaptations for nightly-2024-12-23 (#20196) Co-authored-by: Kim Morrison <kim@tqft.net> Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com> Co-authored-by: Mario Carneiro <di.gama@gmail.com> Co-authored-by: Junyan Xu <junyanxu.math@gmail.com> Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com> Co-authored-by: Mitchell Lee <trivial171@gmail.com> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr> Co-authored-by: Christian Merten <christian@merten.dev> Co-authored-by: Artie Khovanov <artem.khovanov@gmail.com> Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Eric Wieser <efw@google.com> * fix * chore: bump to nightly-2024-12-24 * Merge master into nightly-testing * chore: bump to nightly-2024-12-25 * Merge master into nightly-testing * chore: bump to nightly-2024-12-26 * chore: bump to nightly-2024-12-27 * Merge master into nightly-testing * chore: bump to nightly-2024-12-28 * Merge master into nightly-testing * fix * fix * fix * chore: bump to nightly-2024-12-29 * Merge master into nightly-testing * deprecations * revert * revert * revert * Update lean-toolchain for testing leanprover/lean4#6473 * remove DeriveToExpr * Trigger CI for leanprover/lean4#6473 * fix * chore: bump to nightly-2024-12-30 * Merge master into nightly-testing * Trigger CI for leanprover/lean4#6473 * chore: bump to nightly-2024-12-31 * Merge master into nightly-testing * chore: bump to nightly-2025-01-01 * Merge master into nightly-testing * chore: bump to nightly-2025-01-02 * fix * partial fix * fix hopefully * chore: adaptations for nightly-2025-01-02 * chore: bump to nightly-2025-01-03 * chore: adaptations for nightly-2025-01-03 * chore: bump to nightly-2025-01-04 * fixes * shake --update * chore: bump to nightly-2025-01-05 * Merge master into nightly-testing * chore: bump to nightly-2025-01-06 * bump batteries * chore: bump to nightly-2025-01-07 * chore: bump to nightly-2025-01-08 * chore: bump to nightly-2025-01-09 * bump batteries * bump deps * fix * chore: adaptations for nightly-2025-01-09 * chore: bump to nightly-2025-01-10 * remove upstreamed * Update lean-toolchain for testing leanprover/lean4#6602 * Trigger CI for leanprover/lean4#6602 * fix breakage caused by leanprover/lean4#6602 * chore: adaptations for nightly-2025-01-10 * fix merge * avoid nonrec for leanprover/lean4#6602 * Trigger CI for leanprover/lean4#6602 * chore: bump to nightly-2025-01-14 * bump * fixes * fixes * fixes * chore: bump to nightly-2025-01-15 * fix * empty commit to bump CI * Update lean-toolchain for testing leanprover/lean4#6660 * fixes for leanprover/lean4#6660 * chore: bump to nightly-2025-01-16 * fix * move batteries back to nightly-testing * move batteries back to nightly-testing --------- Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com> Co-authored-by: Johan Commelin <johan@commelin.net> Co-authored-by: Mario Carneiro <di.gama@gmail.com> Co-authored-by: Junyan Xu <junyanxu.math@gmail.com> Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com> Co-authored-by: Mitchell Lee <trivial171@gmail.com> Co-authored-by: Joël Riou <joel.riou@universite-paris-saclay.fr> Co-authored-by: Christian Merten <christian@merten.dev> Co-authored-by: Artie Khovanov <artem.khovanov@gmail.com> Co-authored-by: Eric Wieser <wieser.eric@gmail.com> Co-authored-by: Eric Wieser <efw@google.com> Co-authored-by: Kyle Miller <kmill31415@gmail.com> Co-authored-by: Parth Shastri <31370288+cppio@users.noreply.github.com>
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This PR adds a deriving handler for the
ToExprclass. It can handle mutual and nested inductive types, however it falls back to creatingpartialinstances in such cases. This is upstreamed from the Mathlib deriving handler written by @kmill, but has fixes to handle autoimplicit universe level variables.This is a followup to #6285 (adding the
ToLevelclass). This PR supersedes #5906.Co-authored-by: Alex Keizer alex@keizer.dev