> Include multiple versions of certain functions in the library,
> and select the ones to use at run-time, depending on available
> processor features. Supported for ARM and x86_64.
The current version seems to accelerate AES and SHA families.
Size increase on x86_64 is <10k in our case.
It can make quite some performance difference; I tried
$ time ./result-dev/bin/nettle-hash -a sha256 /some/file/around/2G
And the total CPU time went down from 8.5s to 2s (single thread).
Now it matches the time of openssl
$ time openssl sha256 /some/file/around/2G
Of course, in real life it will be much harder to notice a difference...
Platforms without support for this (e.g. i686) seem to still build fine,
and ARMv7 cross-build also succeeds for me, so hopefully all is OK.
Pantheon's sideload broke:
```
meson.build:17:0: ERROR: Could not generate cargs for flatpak:
Package ostree-1 was not found in the pkg-config search path.
Perhaps you should add the directory containing `ostree-1.pc'
to the PKG_CONFIG_PATH environment variable
Package 'ostree-1', required by 'flatpak', not found
```
https://hydra.nixos.org/build/113077888
ZHF: #80379
start_kdeinit reads its environment over a pipe from start_kdeinit_wrapper. For
security, each environment entry must be smaller than 4kb by default. Qt-based
applications in Nixpkgs may have larger environments, and the recent upgrade to
Plasma 5.17 pushed start_kdeinit_wrapper over the limit. The limit is now
extended to 16kb.
This problem was not detected during testing because the failure is silent:
start_kdeinit will continue with an empty environment. In other circumstances,
this strategy might work, but it does not work on NixOS. This failure is now
treated as a fatal error.
Fixes: #79707
