KDE: Difference between revisions

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{{file|3={

# Enable Plasma

services.desktopManager.plasma6.enable = true;

services = {

desktopManager.plasma6.enable = true;

# Default display manager for Plasma

~~services.~~displayManager.~~sddm = {~~

displayManager.plasma-login-manager.enable = true;

~~enable = true;~~

~~# To use Wayland (Experimental for SDDM)~~

~~wayland~~.enable = true;

};

# Optionally enable xserver

~~services.~~xserver.enable = true;

# xserver.enable = true;

}|name=configuration.nix|lang=nix}}~~{{Warning|SDDM is no longer supported on the unstable branch, users on unstable should use [[Plasma Login Manager]] instead. See configuration later in this page.}}~~

};

}|name=configuration.nix|lang=nix}}

== Configuration ==

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=== Brightness and Color brightness control sets gamma instead of brightness on external monitors ===

To allow <code>powerdevil</code> (and by extension the "Brightness and Color" status tray menu) to control brightness on supported monitors directly instead of adjusting gamma, [[Backlight#Via ddcutil|configure your system to enable ddcutil]], and allow your user to use DDC/CI without root.

To allow <code>powerdevil</code> (and by extension the "Brightness and Color" status tray menu) to control brightness on supported monitors directly instead of adjusting gamma, [[Backlight#Via ddcutil|configure your system to enable ddcutil]], and allow your user to use DDC/CI without root. Note that you do not need to add <code>ddcutil</code> to your system packages because PowerDevil uses libddcutil.

=== Plasma wallpaper reverts back to default after a Nix GC ===

When setting a wallpaper, Plasma may save the path as a <code>/nix/store/*/share/wallpapers</code> path instead of <code>/run/current-system/sw/share/wallpapers/</code>. To fix this, open <code>$XDG_CONFIG_HOME/plasma-org.kde.plasma.desktop-appletsrc</code> and manually change the paths.

=== No available locale settings in the Plasma system settings ===

The "Region & Language" page in the Plasma system settings is somewhat broken on NixOS. Instead, edit the <code>$XDG_CONFIG_HOME/plasma-localerc</code> file.

If you really want to configure locale in settings, you can use this workaround:

{ pkgs, ... }:

{

i18n = {

extraLocales = "all";

imperativeLocale = true; # Unknown if needed (system settings sets user-level override?)

};

environment = {

systemPackages = [ pkgs.stdenv.cc.libc.out ]; # this derivation contains the locales

pathsToLink = [ "/share/i18n" ];

};

}

</syntaxhighlight>

Switch to that configuration, then run:

sudo mkdir -p /usr/share/i18n

sudo ln -s /run/current-system/sw/share/i18n/locales /usr/share/i18n/locales

</syntaxhighlight>

That is a very dirty command, and I don't know if it persists across reboots.

== Tips and tricks ==

@@ Line 7: / Line 7: @@
 {{file|3={
    # Enable Plasma
-   services.desktopManager.plasma6.enable = true;
+   services = {
+    desktopManager.plasma6.enable = true;
    # Default display manager for Plasma
-  services.displayManager.sddm = {
+    displayManager.plasma-login-manager.enable = true;
-    enable = true;
-  # To use Wayland (Experimental for SDDM)
-    wayland.enable = true;
-  };
    # Optionally enable xserver
-   services.xserver.enable = true;
+   # xserver.enable = true;
-}|name=configuration.nix|lang=nix}}{{Warning|SDDM is no longer supported on the unstable branch, users on unstable should use [[Plasma Login Manager]] instead. See configuration later in this page.}}
+  };
+}|name=configuration.nix|lang=nix}}
 == Configuration ==
@@ Line 124: / Line 120: @@
 === Brightness and Color brightness control sets gamma instead of brightness on external monitors ===
-To allow <code>powerdevil</code> (and by extension the "Brightness and Color" status tray menu) to control brightness on supported monitors directly instead of adjusting gamma, [[Backlight#Via ddcutil|configure your system to enable ddcutil]], and allow your user to use DDC/CI without root.
+To allow <code>powerdevil</code> (and by extension the "Brightness and Color" status tray menu) to control brightness on supported monitors directly instead of adjusting gamma, [[Backlight#Via ddcutil|configure your system to enable ddcutil]], and allow your user to use DDC/CI without root. Note that you do not need to add <code>ddcutil</code> to your system packages because PowerDevil uses libddcutil.
+=== Plasma wallpaper reverts back to default after a Nix GC ===
+When setting a wallpaper, Plasma may save the path as a <code>/nix/store/*/share/wallpapers</code> path instead of <code>/run/current-system/sw/share/wallpapers/</code>. To fix this, open <code>$XDG_CONFIG_HOME/plasma-org.kde.plasma.desktop-appletsrc</code> and manually change the paths.
+=== No available locale settings in the Plasma system settings ===
+The "Region & Language" page in the Plasma system settings is somewhat broken on NixOS. Instead, edit the <code>$XDG_CONFIG_HOME/plasma-localerc</code> file.
+If you really want to configure locale in settings, you can use this workaround:
+<syntaxhighlight lang="nix">
+{ pkgs, ... }:
+{
+  i18n = {
+    extraLocales = "all";
+    imperativeLocale = true; # Unknown if needed (system settings sets user-level override?)
+  };
+  environment = {
+    systemPackages = [ pkgs.stdenv.cc.libc.out ]; # this derivation contains the locales
+    pathsToLink = [ "/share/i18n" ];
+  };
+}
+</syntaxhighlight>
+Switch to that configuration, then run:
+<syntaxhighlight lang="bash">
+sudo mkdir -p /usr/share/i18n
+sudo ln -s /run/current-system/sw/share/i18n/locales /usr/share/i18n/locales
+</syntaxhighlight>
+That is a very dirty command, and I don't know if it persists across reboots.
 == Tips and tricks ==