Added configurations to `bumblebee` package to easy multiple monitors on Optimus
machines.
The behaviour of the default `bumblebee` package hasn't change, so this change
is backwards compatible. Users who want to connect a monitor to their discrete
card should use the package `bumblebee_display` instead.
Also added new configuration option to nixos bumblebee module:
```
hardware.bumblebee.connectDisplay = true
```
will enable the new configuration, but the default is still false.
During install, the bootloader script gets run inside a chroot after the
/etc/group bind-mount is unmounted. Since we're not doing any building,
this should be safe, but really nix should just not care if the group
does not exist when no build is needed.
Fixes#5494
Since the 4.2.8 upgrade, ntpd is broken on NixOS:
Dec 28 19:06:54 hagbard ntpd[27723]: giving up resolving host 1.nixos.pool.ntp.org: Servname not supported for ai_socktype (-8)
This appears to be because DNS resolution doesn't work in chroots
anymore (due to /etc being missing). So disable chroots for now. It's
probably better to use systemd's containment facilities anyway.
Tested on KDE4, fixed with xfce, and was used with GNOME before.
CC @lethalman.
I did not test e19, as it won't build, probably due to #5392 @shlevy.
CC maintainer @matejc.
Also removed a forgotten unused patch.
Commit 939edb1 reintroduced autoStart, but instead of creating a list of
units for the wantedBy list with optional it became a list of lists of
units.
Signed-off-by: aszlig <aszlig@redmoonstudios.org>
Add a script to add git branches for each channel.
To create / update references to remote / local channels, you have to run `./maintainers/scripts/update-channel-branches.sh` while you are at the top-level of nixpkgs work directory. To make this convenient for Nixpkgs / NixOS developer, one can run the following command:
```
$ git config --add alias.fetch-channels '!sh -c "$(git rev-parse --show-cdup)maintainers/scripts/update-channel-branches.sh"'
```
Which will register the alias fetch-channels such that the script can used from sub-directory of nixpkgs by running `git fetch-channels`.
