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