[Git][ghc/ghc][wip/backports-9.8] 9 commits: Revert "users_guide: Restore compatibility with pre-packaging Python"

Tue Aug 22 15:01:38 UTC 2023

Ben Gamari pushed to branch wip/backports-9.8 at Glasgow Haskell Compiler / GHC

Commits:
2198cb33 by Ben Gamari at 2023-08-22T10:53:57-04:00
Revert "users_guide: Restore compatibility with pre-packaging Python"

This reverts commit 291963af49a12a05c40d9ed6fd000cba8b15595b.

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7e960b08 by Ben Gamari at 2023-08-22T10:54:06-04:00
users-guide: Support both distutils and packaging

As noted in #23818, some old distributions (e.g. Debian 9) only include
`distutils` while newer distributions only include `packaging`.

Fixes #23818.

(cherry picked from commit d814bda97994df01139c2a9bcde915dc86ef2927)

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aa0b54f0 by Ben Gamari at 2023-08-22T10:54:41-04:00
users-guide: Ensure extlinks is compatible with Sphinx <4

The semantics of the `extlinks` attribute annoyingly changed in Sphinx
4. Reflect this in our configuration. See #22690.

Fixes #23807.

(cherry picked from commit 1726db3f39f1c41b92b1bdf45e9dc054b401e782)

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8b27761b by Sylvain Henry at 2023-08-22T10:55:14-04:00
JS: implement openat(AT_FDCWD...) (#23697)

Use `openSync` to implement `openat(AT_FDCWD...)`.

(cherry picked from commit e2b381154c0f89a4ee23190e2e7d7cae105587e6)

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a9c9d930 by sheaf at 2023-08-22T10:55:24-04:00
Use unsatisfiable for missing methods w/ defaults

When a class instance has an Unsatisfiable constraint in its context
and the user has not explicitly provided an implementation of a method,
we now always provide a RHS of the form `unsatisfiable @msg`, even
if the method has a default definition available. This ensures that,
when deferring type errors, users get the appropriate error message
instead of a possible runtime loop, if class default methods were
defined recursively.

Fixes #23816

(cherry picked from commit a975c6634b0d202b21e0e719efb9900e44f85392)

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5c5b4202 by Gergő Érdi at 2023-08-22T10:55:33-04:00
If a defaulting plugin made progress, re-zonk wanteds before built-in defaulting

Fixes #23821.

(cherry picked from commit a6828173b90dbd276be593c1690aa34317c13c72)

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31936af0 by Matthew Pickering at 2023-08-22T10:55:38-04:00
packaging: Build manpage in separate directory to other documentation

We were installing two copies of the manpage:

* One useless one in the `share/doc` folder, because we copy the doc/
  folder into share/
* The one we deliberately installed into `share/man` etc

The solution is to build the manpage into the `manpage` directory when
building the bindist, and then just install it separately.

Fixes #23707

(cherry picked from commit 026f040ad0297cd1b735307656b8f5cf33d1e71e)

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54bab9cf by Ben Gamari at 2023-08-22T10:55:45-04:00
hadrian: Always canonicalize topDirectory

Hadrian's `topDirectory` is intended to provide an absolute path to the
root of the GHC tree. However, if the tree is reached via a symlink this

One question here is whether the `canonicalizePath` call is expensive
enough to warrant caching. In a quick microbenchmark I observed that
`canonicalizePath "."` takes around 10us per call; this seems
sufficiently low not to worry.

Alternatively, another approach here would have been to rather move the
canonicalization into `m4/fp_find_root.m4`. This would have avoided
repeated canonicalization but sadly path canonicalization is a hard
problem in POSIX shell.

Addresses #22451.

(cherry picked from commit 5efa9ca545d8d33b9be4fc0ba91af1db38f19276)

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8ae169f6 by Gergő Érdi at 2023-08-22T11:01:25-04:00
Add flag to `-f{no-}specialise-incoherents` to enable/disable specialisation of incoherent instances

Fixes #23287

(cherry picked from commit 481f4a46a4efccff7242afcdda42c8df6325117f)

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30 changed files:

- compiler/GHC/Core/InstEnv.hs
- compiler/GHC/Driver/DynFlags.hs
- compiler/GHC/Driver/Flags.hs
- compiler/GHC/Driver/Session.hs
- compiler/GHC/Hs/Decls.hs
- compiler/GHC/HsToCore/Binds.hs
- compiler/GHC/HsToCore/Monad.hs
- compiler/GHC/HsToCore/Quote.hs
- compiler/GHC/HsToCore/Types.hs
- compiler/GHC/Tc/Errors.hs
- compiler/GHC/Tc/Gen/Splice.hs
- compiler/GHC/Tc/Instance/Class.hs
- compiler/GHC/Tc/Solver.hs
- compiler/GHC/Tc/Solver/Dict.hs
- compiler/GHC/Tc/Solver/Equality.hs
- compiler/GHC/Tc/Solver/Irred.hs
- compiler/GHC/Tc/Solver/Monad.hs
- compiler/GHC/Tc/Solver/Solve.hs
- compiler/GHC/Tc/TyCl/Instance.hs
- compiler/GHC/Tc/Types/Evidence.hs
- compiler/GHC/Tc/Utils/Instantiate.hs
- compiler/GHC/Types/Basic.hs
- docs/users_guide/flags.py
- docs/users_guide/ghc_config.py.in
- docs/users_guide/using-optimisation.rst
- docs/users_guide/utils.py
- hadrian/bindist/Makefile
- hadrian/src/Oracles/Setting.hs
- hadrian/src/Rules/BinaryDist.hs
- hadrian/src/Rules/Documentation.hs

The diff was not included because it is too large.

View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/compare/b958a6e4c145a951690ee66c877f786decc0302b...8ae169f69764b06160e3e49941fdcfd60b2ba571

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