The issue manifests itself as the following on `aarch64-darwin`:
```
>>> import ctypes
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/nix/store/i8cq0xrjirz1rcp65wzcyhj6ypzlw9il-python3-3.7.10/lib/python3.7/ctypes/__init__.py", line 551, in <module>
_reset_cache()
File "/nix/store/i8cq0xrjirz1rcp65wzcyhj6ypzlw9il-python3-3.7.10/lib/python3.7/ctypes/__init__.py", line 273, in _reset_cache
CFUNCTYPE(c_int)(lambda: None)
MemoryError
```
The commit we backport is included in Python 3.8, and it reverts
the change that was introduced all the way back in Python 2.7.
Now that `buildEnv` is ready, always put `makeWrapper` in
`nativeBuildInputs`, rather than `buildInputs` or (worse) mucking around
with setup hooks by hand.
(C.f. #112276, which didn't catch these because the manual setup hook
sourcing is such a hack to being with!)
Fixes#114687
The package set is an attribute of the interpreter. The function to
build an environment (`buildEnv`/`withPackages`) is part of the
interpreter. The interpreter is passed to itself, and needs to be
updated when overridden.
For cross-compilation we splice the package set, and for that the
various `build/host` interpreters and sets need to be available. We
select these currently through `pkgs.${pythonAttr}`. The `pythonAttr`
attribute was not fixed for `pythonFull`.
https://github.com/NixOS/rfcs/pull/83https://github.com/NixOS/nixpkgs/pull/104201
We need a better solution for this because this is very brittle.
Thanks to the Gentoo team maintaining a fork of python2¹ we can easily
apply their backported patch for this security vulnerability.
[1] https://gitweb.gentoo.org/fork/cpython.git/
continuation of #109595
pkgconfig was aliased in 2018, however, it remained in
all-packages.nix due to its wide usage. This cleans
up the remaining references to pkgs.pkgsconfig and
moves the entry to aliases.nix.
python3Packages.pkgconfig remained unchanged because
it's the canonical name of the upstream package
on pypi.
Resolves issue when building wheels which is a regression introduced by
1a65c5df5f
```
AssertionError: would build wheel with unsupported tag ('cp38', 'cp38',
'darwin_x86_64')
```
