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chore: adaptations for leanprover/lean4#2778#8284

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chore: adaptations for leanprover/lean4#2778#8284
kim-em wants to merge 12 commits intonightly-testing-2023-11-08from
lean-pr-testing-2778

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@kim-em kim-em commented Nov 9, 2023

Change required for leanprover/lean4#2778. This PR is based off nightly-testing-2023-11-08.


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@kim-em kim-em added WIP Work in progress awaiting-review labels Nov 9, 2023
@kim-em kim-em changed the base branch from nightly-testing-2023-11-06 to nightly-testing-2023-11-08 November 9, 2023 06:01
@ghost ghost added the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Nov 9, 2023
@kim-em kim-em added the blocked-by-core-release Not relevant for the current Lean release candidate, but will be needed for the next. label Nov 9, 2023
When reading this file, it is difficult to tell whether statements are about ordinal or natural powers; especially given that when leanprover/lean4#2220 is fixed the meanings may change.
This adds type annotations to remove the ambiguity.
This folds in the changes from #8291
@ghost ghost removed the merge-conflict The PR has a merge conflict with master, and needs manual merging. (this label is managed by a bot) label Nov 9, 2023
@eric-wieser
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eric-wieser commented Nov 9, 2023

The commits above cherry-pick the changes from #8291 onto nightly-testing-2023-11-08, then merge the combination into this branch, as this resulted in simpler conflicts (from #8279) than merging nightly-testing-2023-11-08 directly.

I did not directly merge #8291 as I did not want to pull in other changes from master and mess up Scott's automation setup.

@kim-em kim-em added merged-into-nightly-testing and removed WIP Work in progress labels Nov 11, 2023
mathlib-bors bot pushed a commit that referenced this pull request Nov 17, 2023
# PR contents

This is the supremum of

- #8284
- #8056
- #8023
- #8332
- #8226 (already approved)
- #7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib `master` is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a `bump/v4.X.0` branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

# Lean PRs involved in this bump

In particular this includes adjustments for the Lean PRs

* leanprover/lean4#2778 
* leanprover/lean4#2790
* leanprover/lean4#2783
* leanprover/lean4#2825
* leanprover/lean4#2722

## leanprover/lean4#2778

We can get rid of all the 
```
local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
```
macros across Mathlib (and in any projects that want to write natural number powers of reals).

## leanprover/lean4#2722

Changes the default behaviour of `simp` to `(config := {decide := false})`. This makes `simp` (and consequentially `norm_num`) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by `simp` or `norm_num` to `decide` or `rfl`, or adding `(config := {decide := true})`. 

## leanprover/lean4#2783

This changed the behaviour of `simp` so that `simp [f]` will only unfold "fully applied" occurrences of `f`. The old behaviour can be recovered with `simp (config := { unfoldPartialApp := true })`. We may in future add a syntax for this, e.g. `simp [!f]`; please provide feedback! In the meantime, we have made the following changes:
* switching to using explicit lemmas that have the intended level of application
* `(config := { unfoldPartialApp := true })` in some places, to recover the old behaviour
* Using `@[eqns]` to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for `Function.comp` and `Function.flip`.

This change in Lean may require further changes down the line (e.g. adding the `!f` syntax, and/or upstreaming the special treatment for `Function.comp` and `Function.flip`, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!



Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Mauricio Collares <mauricio@collares.org>
mathlib-bors bot pushed a commit that referenced this pull request Nov 17, 2023
# PR contents

This is the supremum of

- #8284
- #8056
- #8023
- #8332
- #8226 (already approved)
- #7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib `master` is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a `bump/v4.X.0` branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

# Lean PRs involved in this bump

In particular this includes adjustments for the Lean PRs

* leanprover/lean4#2778 
* leanprover/lean4#2790
* leanprover/lean4#2783
* leanprover/lean4#2825
* leanprover/lean4#2722

## leanprover/lean4#2778

We can get rid of all the 
```
local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
```
macros across Mathlib (and in any projects that want to write natural number powers of reals).

## leanprover/lean4#2722

Changes the default behaviour of `simp` to `(config := {decide := false})`. This makes `simp` (and consequentially `norm_num`) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by `simp` or `norm_num` to `decide` or `rfl`, or adding `(config := {decide := true})`. 

## leanprover/lean4#2783

This changed the behaviour of `simp` so that `simp [f]` will only unfold "fully applied" occurrences of `f`. The old behaviour can be recovered with `simp (config := { unfoldPartialApp := true })`. We may in future add a syntax for this, e.g. `simp [!f]`; please provide feedback! In the meantime, we have made the following changes:
* switching to using explicit lemmas that have the intended level of application
* `(config := { unfoldPartialApp := true })` in some places, to recover the old behaviour
* Using `@[eqns]` to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for `Function.comp` and `Function.flip`.

This change in Lean may require further changes down the line (e.g. adding the `!f` syntax, and/or upstreaming the special treatment for `Function.comp` and `Function.flip`, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!



Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Mauricio Collares <mauricio@collares.org>
alexkeizer pushed a commit that referenced this pull request Nov 17, 2023
# PR contents

This is the supremum of

- #8284
- #8056
- #8023
- #8332
- #8226 (already approved)
- #7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib `master` is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a `bump/v4.X.0` branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

# Lean PRs involved in this bump

In particular this includes adjustments for the Lean PRs

* leanprover/lean4#2778 
* leanprover/lean4#2790
* leanprover/lean4#2783
* leanprover/lean4#2825
* leanprover/lean4#2722

## leanprover/lean4#2778

We can get rid of all the 
```
local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
```
macros across Mathlib (and in any projects that want to write natural number powers of reals).

## leanprover/lean4#2722

Changes the default behaviour of `simp` to `(config := {decide := false})`. This makes `simp` (and consequentially `norm_num`) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by `simp` or `norm_num` to `decide` or `rfl`, or adding `(config := {decide := true})`. 

## leanprover/lean4#2783

This changed the behaviour of `simp` so that `simp [f]` will only unfold "fully applied" occurrences of `f`. The old behaviour can be recovered with `simp (config := { unfoldPartialApp := true })`. We may in future add a syntax for this, e.g. `simp [!f]`; please provide feedback! In the meantime, we have made the following changes:
* switching to using explicit lemmas that have the intended level of application
* `(config := { unfoldPartialApp := true })` in some places, to recover the old behaviour
* Using `@[eqns]` to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for `Function.comp` and `Function.flip`.

This change in Lean may require further changes down the line (e.g. adding the `!f` syntax, and/or upstreaming the special treatment for `Function.comp` and `Function.flip`, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!



Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Mauricio Collares <mauricio@collares.org>
@kmill
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kmill commented Nov 18, 2023

This was merged in the version bump, so closing.

@kmill kmill closed this Nov 18, 2023
@kmill kmill deleted the lean-pr-testing-2778 branch November 18, 2023 01:12
alexkeizer pushed a commit that referenced this pull request Nov 21, 2023
This is the supremum of

- #8284
- #8056
- #8023
- #8332
- #8226 (already approved)
- #7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib `master` is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a `bump/v4.X.0` branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

In particular this includes adjustments for the Lean PRs

* leanprover/lean4#2778
* leanprover/lean4#2790
* leanprover/lean4#2783
* leanprover/lean4#2825
* leanprover/lean4#2722

We can get rid of all the
```
local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
```
macros across Mathlib (and in any projects that want to write natural number powers of reals).

Changes the default behaviour of `simp` to `(config := {decide := false})`. This makes `simp` (and consequentially `norm_num`) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by `simp` or `norm_num` to `decide` or `rfl`, or adding `(config := {decide := true})`.

This changed the behaviour of `simp` so that `simp [f]` will only unfold "fully applied" occurrences of `f`. The old behaviour can be recovered with `simp (config := { unfoldPartialApp := true })`. We may in future add a syntax for this, e.g. `simp [!f]`; please provide feedback! In the meantime, we have made the following changes:
* switching to using explicit lemmas that have the intended level of application
* `(config := { unfoldPartialApp := true })` in some places, to recover the old behaviour
* Using `@[eqns]` to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for `Function.comp` and `Function.flip`.

This change in Lean may require further changes down the line (e.g. adding the `!f` syntax, and/or upstreaming the special treatment for `Function.comp` and `Function.flip`, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!

Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Mauricio Collares <mauricio@collares.org>
grunweg pushed a commit that referenced this pull request Dec 15, 2023
# PR contents

This is the supremum of

- #8284
- #8056
- #8023
- #8332
- #8226 (already approved)
- #7834 (already approved)

along with some minor fixes from failures on nightly-testing as Mathlib `master` is merged into it.

Note that some PRs for changes that are already compatible with the current toolchain and will be necessary have already been split out: #8380.

I am hopeful that in future we will be able to progressively merge adaptation PRs into a `bump/v4.X.0` branch, so we never end up with a "big merge" like this. However one of these adaptation PRs (#8056) predates my new scheme for combined CI, and it wasn't possible to keep that PR viable in the meantime.

# Lean PRs involved in this bump

In particular this includes adjustments for the Lean PRs

* leanprover/lean4#2778 
* leanprover/lean4#2790
* leanprover/lean4#2783
* leanprover/lean4#2825
* leanprover/lean4#2722

## leanprover/lean4#2778

We can get rid of all the 
```
local macro_rules | `($x ^ $y) => `(HPow.hPow $x $y) -- Porting note: See issue lean4#2220
```
macros across Mathlib (and in any projects that want to write natural number powers of reals).

## leanprover/lean4#2722

Changes the default behaviour of `simp` to `(config := {decide := false})`. This makes `simp` (and consequentially `norm_num`) less powerful, but also more consistent, and less likely to blow up in long failures. This requires a variety of changes: changing some previously by `simp` or `norm_num` to `decide` or `rfl`, or adding `(config := {decide := true})`. 

## leanprover/lean4#2783

This changed the behaviour of `simp` so that `simp [f]` will only unfold "fully applied" occurrences of `f`. The old behaviour can be recovered with `simp (config := { unfoldPartialApp := true })`. We may in future add a syntax for this, e.g. `simp [!f]`; please provide feedback! In the meantime, we have made the following changes:
* switching to using explicit lemmas that have the intended level of application
* `(config := { unfoldPartialApp := true })` in some places, to recover the old behaviour
* Using `@[eqns]` to manually adjust the equation lemmas for a particular definition, recovering the old behaviour just for that definition. See #8371, where we do this for `Function.comp` and `Function.flip`.

This change in Lean may require further changes down the line (e.g. adding the `!f` syntax, and/or upstreaming the special treatment for `Function.comp` and `Function.flip`, and/or removing this special treatment). Please keep an open and skeptical mind about these changes!



Co-authored-by: leanprover-community-mathlib4-bot <leanprover-community-mathlib4-bot@users.noreply.github.com>
Co-authored-by: Scott Morrison <scott.morrison@gmail.com>
Co-authored-by: Eric Wieser <wieser.eric@gmail.com>
Co-authored-by: Mauricio Collares <mauricio@collares.org>
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