The Linux kernel includes libelf headers with -Wundef and -Werror enabled, resulting in an error when the headers are found through -I as opposed to -isystem.

Fixes #59929

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/glib-networking/versions

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/gpgme/versions

glib-networking: 2.60.2 -> 2.60.3

gpgme: 1.13.0 -> 1.13.1

meson: 0.49.1 → 0.50.1

Using "builtins.currentSystem" doesn't work in pure evaluation mode,
and even when it's explicitly set (which it always is, in
nixos/lib/eval-config.nix), it breaks manual generation because the
manual tries to render the default value.

gtk3: re-enable demos

The vulnerability seems quite serious.
It isn't practical to use fetchpatch here due to bootstrapping,
so I just committed the small patch file.

They have no users in nixpkgs.

Semi-automatic update generated by
https://github.com/ryantm/nixpkgs-update tools. This update was made
based on information from
https://repology.org/metapackage/libshout/versions

postgresql: 9.4.22 -> 9.4.23, 9.5.17 -> 9.5.18, 9.6.13 -> 9.6.14, 10.8 -> 10.9, 11.3 -> 11.4

libelf: Add patch to prevent -Wundef warnings.

This reverts commit 58cbb1b.

78054a5 is more elaborated upgrade.

bc109b1 on master created a separate
expression based on wxGTK30, but that expression was modified on staging
in f0733a0. Let's sync that.

We disabled them by default when they were introduced in

#42994

but enabling them probably makes more sense:

#54398
#63491

This should allow us to inherit optimization/striping from stdenv

There are several thousand rebuilds from master already.
Hydra nixpkgs: ?compare=1528940

This fixes the darwin build, while also using Meson’s auto features as
much as possible. As a result, we avoid using having to specify
default drivers and instead delegate that to Mesa’s build system.
Removed other flags that were specified to the default in Mesa.

The -fno-common is needed to address undefined symbol _lp_dummy_tile
in the build.