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|
{ config, lib, pkgs, ... }:
with lib;
let
xcfg = config.services.xserver;
cfg = xcfg.desktopManager.kde4;
xorg = pkgs.xorg;
kde_workspace = config.services.xserver.desktopManager.kde4.kdeWorkspacePackage;
# Disable Nepomuk and Strigi by default. As of KDE 4.7, they don't
# really work very well (e.g. searching files often fails to find
# files), segfault sometimes and consume significant resources.
# They can be re-enabled in the KDE System Settings under "Desktop
# Search".
disableNepomuk = pkgs.writeTextFile
{ name = "nepomuk-config";
destination = "/share/config/nepomukserverrc";
text =
''
[Basic Settings]
Start Nepomuk=false
[Service-nepomukstrigiservice]
autostart=false
'';
};
phononBackends = {
gstreamer = [
pkgs.phonon-backend-gstreamer
pkgs.gst_all.gstPluginsBase
pkgs.gst_all.gstPluginsGood
pkgs.gst_all.gstPluginsUgly
pkgs.gst_all.gstPluginsBad
pkgs.gst_all.gstFfmpeg # for mp3 playback
pkgs.gst_all.gstreamer # needed?
];
vlc = [pkgs.phonon-backend-vlc];
};
phononBackendPackages = flip concatMap cfg.phononBackends
(name: attrByPath [name] (throw "unknown phonon backend `${name}'") phononBackends);
in
{
options = {
services.xserver.desktopManager.kde4 = {
enable = mkOption {
type = types.bool;
default = false;
description = "Enable the KDE 4 desktop environment.";
};
phononBackends = mkOption {
type = types.listOf types.str;
default = ["gstreamer"];
example = ["gstreamer" "vlc"];
description = "Which phonon multimedia backend kde should use";
};
kdeWorkspacePackage = mkOption {
internal = true;
default = pkgs.kde4.kde_workspace;
defaultText = "pkgs.kde4.kde_workspace";
type = types.package;
description = "Custom kde-workspace, used for NixOS rebranding.";
};
enablePIM = mkOption {
type = types.bool;
default = true;
description = "Whether to enable PIM support. Note that enabling this pulls in Akonadi and MariaDB as dependencies.";
};
enableNepomuk = mkOption {
type = types.bool;
default = false;
description = "Whether to enable Nepomuk (deprecated).";
};
};
};
config = mkIf (xcfg.enable && cfg.enable) {
# If KDE 4 is enabled, make it the default desktop manager (unless
# overridden by the user's configuration).
# !!! doesn't work yet ("Multiple definitions. Only one is allowed
# for this option.")
# services.xserver.desktopManager.default = mkOverride 900 "kde4";
services.xserver.desktopManager.session = singleton
{ name = "kde4";
bgSupport = true;
start =
''
# The KDE icon cache is supposed to update itself
# automatically, but it uses the timestamp on the icon
# theme directory as a trigger. Since in Nix the
# timestamp is always the same, this doesn't work. So as
# a workaround, nuke the icon cache on login. This isn't
# perfect, since it may require logging out after
# installing new applications to update the cache.
# See http://lists-archives.org/kde-devel/26175-what-when-will-icon-cache-refresh.html
rm -fv $HOME/.kde/cache-*/icon-cache.kcache
# Qt writes a weird ‘libraryPath’ line to
# ~/.config/Trolltech.conf that causes the KDE plugin
# paths of previous KDE invocations to be searched.
# Obviously using mismatching KDE libraries is potentially
# disastrous, so here we nuke references to the Nix store
# in Trolltech.conf. A better solution would be to stop
# Qt from doing this wackiness in the first place.
if [ -e $HOME/.config/Trolltech.conf ]; then
sed -e '/nix\\store\|nix\/store/ d' -i $HOME/.config/Trolltech.conf
fi
# Load PulseAudio module for routing support.
# See http://colin.guthr.ie/2009/10/so-how-does-the-kde-pulseaudio-support-work-anyway/
${optionalString config.hardware.pulseaudio.enable ''
${getBin config.hardware.pulseaudio.package}/bin/pactl load-module module-device-manager "do_routing=1"
''}
# Start KDE.
exec ${kde_workspace}/bin/startkde
'';
};
security.wrappers.kcheckpass.source = "${kde_workspace}/lib/kde4/libexec/kcheckpass";
environment.systemPackages =
[ pkgs.kde4.kdelibs
pkgs.kde4.kde_baseapps # Splitted kdebase
kde_workspace
pkgs.kde4.kde_runtime
pkgs.kde4.konsole
pkgs.kde4.kate
pkgs.kde4.kde_wallpapers # contains kdm's default background
pkgs.kde4.oxygen_icons
# Starts KDE's Polkit authentication agent.
pkgs.kde4.polkit_kde_agent
# Miscellaneous runtime dependencies.
pkgs.kde4.qt4 # needed for qdbus
pkgs.shared_mime_info
xorg.xmessage # so that startkde can show error messages
xorg.xset # used by startkde, non-essential
xorg.xauth # used by kdesu
]
++ optionals cfg.enablePIM
[ pkgs.kde4.kdepim_runtime
pkgs.kde4.akonadi
pkgs.mysql # used by akonadi
]
++ (if cfg.enableNepomuk then
[ pkgs.shared_desktop_ontologies # used by nepomuk
pkgs.strigi # used by nepomuk
pkgs.virtuoso # to enable Nepomuk to find Virtuoso
] else
[ disableNepomuk ])
++ optional config.hardware.pulseaudio.enable pkgs.kde4.kmix # Perhaps this should always be enabled
++ optional config.hardware.bluetooth.enable pkgs.kde4.bluedevil
++ optional config.networking.networkmanager.enable pkgs.kde4.plasma-nm
++ phononBackendPackages;
environment.pathsToLink = [ "/share" ];
environment.profileRelativeEnvVars = mkIf (elem "gstreamer" cfg.phononBackends) {
GST_PLUGIN_SYSTEM_PATH = [ "/lib/gstreamer-0.10" ];
};
environment.etc = singleton
{ source = "${pkgs.xkeyboard_config}/etc/X11/xkb";
target = "X11/xkb";
};
# Enable helpful DBus services.
services.udisks2.enable = true;
services.upower.enable = config.powerManagement.enable;
security.pam.services.kde = { allowNullPassword = true; };
};
}
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