* 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.
Default behavior is to continue executing the script even when one or
multiple steps fail. We want to abort early if any part of the
initialization fails to not run with a partially initialized state.
Default behavior also allows dereferencing non-existent variables,
potentially resulting in hard-to-find bugs.
This option was removed because allowing (multiple) regular users to
override host entries affecting the whole system opens up a huge attack
vector. There seem to be very rare cases where this might be useful.
Consider setting system-wide host entries using networking.hosts,
provide them via the DNS server in your network, or use
networking.networkmanager.appendNameservers to point your system to
another (local) nameserver to set those entries.
This reverts commit 60aedadc59.
Using tests from #71212 I am now unable to reproduce there being issues
with starting the default metacity flashback session without this.
On start, unicorn, sidekiq and other parts running ruby code emits
quite a few warnings similar to
/var/gitlab/state/config/application.rb:202: warning: already initialized constant Gitlab::Application::LOOSE_EE_APP_ASSETS
/nix/store/ysb0lgbzxp7a9y4yl8d4f9wrrzy9kafc-gitlab-ee-12.3.5/share/gitlab/config/application.rb:202: warning: previous definition of LOOSE_EE_APP_ASSETS was here
/var/gitlab/state/lib/gitlab.rb:38: warning: already initialized constant Gitlab::COM_URL
/nix/store/ysb0lgbzxp7a9y4yl8d4f9wrrzy9kafc-gitlab-ee-12.3.5/share/gitlab/lib/gitlab.rb:38: warning: previous definition of COM_URL was here
This seems to be caused by the same ruby files being evaluated
multiple times due to the paths being different - sometimes they're
loaded using the direct path and sometimes through a symlink, due to
our split between config and package data. To fix this, we make sure
that the offending files in the state directory always reference the
store path, regardless of that being the real file or a symlink.
Otherwise connecting simply fails:
VPN connection: failed to connect: 'La création du fichier « /tmp/lib/NetworkManager-fortisslvpn/0507e3ef-f0e0-4153-af64-b3d9a025877c.config.XSB19Z » a échoué : No such file or directory'
