For some reason nm-applet has to be running for an authentication
dialog to be spawned by wingpanel-indicator-network.

This also fixes storing NetworkManager secrets in the keyring, but this
is still broken because we lack the proper PAM configuration.

Move cmake and pkgconfig from buildInputs to nativeBuildInputs
Remove unneeded perl from buildInputs

the tests fail
NixOS/nixpkgs#67416 (comment) so
we'll disable them for now and notify upstream

Fixes #67797.

In fontconfig’s 60-generic.conf, order of preference is estabilished for emoji
font family. Because fontconfig parses the config files in lexicographic order,
appending each <prefer> from <alias> element to the family’s prefer list
(to be prepended before the family) [1], our font family defaults stored
in 52-nixos-default-fonts.conf will take precedence. That is, of course, unless
the default „weak“ binding [2] is used. Emoji family binds strongly [3],
so we need to set binding to “same” for our <alias>es to be considered before
the ones from 60-generic.conf.

By default, we will set the option to all emoji fonts supported by fontconfig,
so that emoji works for user if they have at least one emoji font installed.
If they have multiple emoji fonts installed, we will use the fontconfig’s
order of preference [4].

[1]: bohoomil/fontconfig-ultimate#51 (comment)
[2]: https://www.freedesktop.org/software/fontconfig/fontconfig-user.html#AEN25
[3]: https://gitlab.freedesktop.org/fontconfig/fontconfig/commit/cc8442dec85e9d416436d19eeae1783f2d3008f0
[4]: https://gitlab.freedesktop.org/fontconfig/fontconfig/commit/c41c9220181b203d1cf1f6435f6e3735cb7c84ac

Make sure the fonts.enableDefaultFonts option works.

These days, emoji are ubiqitous so we need to add emoji font.

cargo-watch: init at 7.2.1

consul: 1.5.2 -> 1.6.0

ghq: 0.10.2 -> 0.12.6

cayley: 0.6.1 -> 0.7.5

dgraph: 0.8.2 -> 1.0.17

nixos/redis: disable transparent huge pages (TLP) before starting Redis

babl: disable tests

diesel-cli: init at 1.4.0

youtube-dl: 2019.08.13 -> 2019.09.01

nixos/fontconfig: Allow setting default emoji font

parity: 2.5.6 -> 2.5.7, parity-beta: 2.6.1 -> 2.6.2

…icator

nixos/pantheon: fix launching nm-applet components