To get python3 support. #63174 flipped itstool to python3, but itstool
doesn't support python3 until 2.0.3 (and perhaps does not support it
well until 2.0.5).
Pressing forward instead of rolling back at worldofpeace's suggestion,
who mentions that other distros seem to be able to ship recent versions
of itstool.
Tensions in this space seem two-fold. One set centers around libxml2
being a low-level C library with sharp edges, manual memory management,
and performance concerns; the python libxml2 wrapper being quite thin
(the most dubious character in this drama); and python's sentiment that
it ought to be quite hard to crash the interpreter casually. This comes
to a head in https://gitlab.gnome.org/GNOME/libxml2/issues/12 , where a
use-after-free problem in idiomatic-looking python code is declared
working-as-designed.
The other set is around python3 being more UTF-8-aware than libxml2's
python wrapper, such as https://bugzilla.gnome.org/show_bug.cgi?id=789714
and https://src.fedoraproject.org/rpms/libxml2/blob/master/f/libxml2-2.9.8-python3-unicode-errors.patch
itstool is caught in this crossfire merely for being a widely-used
python program that uses XML.
Without those data files HRTF will silently fail to initialize.
It searches /usr and /usr/local by default but we don't have those paths.
It also searches XDG_DATA_DIRS but using that requires configuration by the
user. This patch makes makes it just work.
How to play with it:
- Build `mpv` with `openalSoft` support.
- cat << EOF > ~/.alsoftrc
[general]
hrtf = true
EOF
- Wear stereo headphones.
- Play a file with 6 or more channels with `mpv -ao openal $file`, e.g.
https://archive.org/download/5.1SurroundSoundTestFilesVariousFormatsAACAC3MP4DTSWAV/5.1%20Surround%20Sound%20AAC%20Test.mp4
- Try `hrtf = false` to hear the difference.
* lm_sensors: add fancontrol module + nixos test
fancontrol is a small script that checks temperature sensors and adapts
fan speeds accordingly. It reads a text config file that can be
auto-generated by running the pwmconfig wizard on the live system.
If `PATH` is unset, the exec wrappers in skalibs set a default path to
`/usr/bin:bin`.
This has very unfortunate effects when you e.g. try to run tests on CI
in an empty environment (minus tools explicitely provided by nix with
absolute store paths), because suddenly binaries from outside are
picked up again, especially on non-NixOS.
Even on NixOS, /bin/sh provides another escape hatch if it’s available
from PATH. But on systems like Ubuntu or MacOS (which most CI systems
run on), this picks up all the non-nix binaries.
