120 lines
5.3 KiB
XML
120 lines
5.3 KiB
XML
<chapter xmlns="http://docbook.org/ns/docbook"
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xmlns:xlink="http://www.w3.org/1999/xlink"
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xml:id="chap-pantheon">
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<title>Pantheon Desktop</title>
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<para>
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Pantheon is the desktop environment created for the elementary OS distribution. It is written from scratch in Vala, utilizing GNOME technologies with GTK 3 and Granite.
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</para>
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<section xml:id="sec-pantheon-enable">
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<title>Enabling Pantheon</title>
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<para>
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All of Pantheon is working in NixOS and the applications should be available, aside from a few <link xlink:href="https://github.com/NixOS/nixpkgs/issues/58161">exceptions</link>. To enable Pantheon, set
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<programlisting>
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<xref linkend="opt-services.xserver.desktopManager.pantheon.enable"/> = true;
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</programlisting>
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This automatically enables LightDM and Pantheon's LightDM greeter. If you'd like to disable this, set
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<programlisting>
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<xref linkend="opt-services.xserver.displayManager.lightdm.greeters.pantheon.enable"/> = false;
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<xref linkend="opt-services.xserver.displayManager.lightdm.enable"/> = false;
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</programlisting>
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but please be aware using Pantheon without LightDM as a display manager will break screenlocking from the UI. The NixOS module for Pantheon installs all of Pantheon's default applications. If you'd like to not install Pantheon's apps, set
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<programlisting>
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<xref linkend="opt-services.pantheon.apps.enable"/> = false;
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</programlisting>
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You can also use <xref linkend="opt-environment.pantheon.excludePackages"/> to remove any other app (like <package>elementary-mail</package>).
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</para>
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</section>
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<section xml:id="sec-pantheon-wingpanel-switchboard">
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<title>Wingpanel and Switchboard plugins</title>
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<para>
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Wingpanel and Switchboard work differently than they do in other distributions, as far as using plugins. You cannot install a plugin globally (like with <option>environment.systemPackages</option>) to start using it. You should instead be using the following options:
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<itemizedlist>
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<listitem>
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<para>
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<xref linkend="opt-services.xserver.desktopManager.pantheon.extraWingpanelIndicators"/>
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</para>
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</listitem>
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<listitem>
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<para>
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<xref linkend="opt-services.xserver.desktopManager.pantheon.extraSwitchboardPlugs"/>
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</para>
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</listitem>
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</itemizedlist>
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to configure the programs with plugs or indicators.
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</para>
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<para>
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The difference in NixOS is both these programs are patched to load plugins from a directory that is the value of an environment variable. All of which is controlled in Nix. If you need to configure the particular packages manually you can override the packages like:
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<programlisting>
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wingpanel-with-indicators.override {
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indicators = [
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pkgs.some-special-indicator
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];
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};
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switchboard-with-plugs.override {
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plugs = [
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pkgs.some-special-plug
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];
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};
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</programlisting>
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please note that, like how the NixOS options describe these as extra plugins, this would only add to the default plugins included with the programs. If for some reason you'd like to configure which plugins to use exactly, both packages have an argument for this:
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<programlisting>
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wingpanel-with-indicators.override {
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useDefaultIndicators = false;
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indicators = specialListOfIndicators;
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};
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switchboard-with-plugs.override {
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useDefaultPlugs = false;
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plugs = specialListOfPlugs;
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};
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</programlisting>
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this could be most useful for testing a particular plug-in in isolation.
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</para>
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</section>
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<section xml:id="sec-pantheon-faq">
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<title>FAQ</title>
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<variablelist>
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<varlistentry xml:id="sec-pantheon-faq-messed-up-theme">
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<term>
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I have switched from a different desktop and Pantheon’s theming looks messed up.
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</term>
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<listitem>
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<para>
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Open Switchboard and go to: <guilabel>Administration</guilabel> → <guilabel>About</guilabel> → <guilabel>Restore Default Settings</guilabel> → <guibutton>Restore Settings</guibutton>. This will reset any dconf settings to their Pantheon defaults. Note this could reset certain GNOME specific preferences if that desktop was used prior.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="sec-pantheon-faq-gnome3-and-pantheon">
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<term>
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I cannot enable both GNOME 3 and Pantheon.
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</term>
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<listitem>
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<para>
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This is a known <link xlink:href="https://github.com/NixOS/nixpkgs/issues/64611">issue</link> and there is no known workaround.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry xml:id="sec-pantheon-faq-appcenter">
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<term>
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Does AppCenter work, or is it available?
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</term>
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<listitem>
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<para>
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AppCenter has been available since 20.03, but it is of little use. This is because there is no functioning PackageKit backend for Nix 2.0. Starting from 21.11, the Flatpak backend should work so you can install some Flatpak applications using it. See this <link xlink:href="https://github.com/NixOS/nixpkgs/issues/70214">issue</link>.
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</para>
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<para>
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To use AppCenter on NixOS, add <literal>pantheon.appcenter</literal> to <xref linkend="opt-environment.systemPackages" />, <link linkend="module-services-flatpak">enable Flatpak support</link> and optionally add the <literal>appcenter</literal> Flatpak remote:
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</para>
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<screen>
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<prompt>$ </prompt>flatpak remote-add --if-not-exists appcenter https://flatpak.elementary.io/repo.flatpakrepo
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</screen>
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</listitem>
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</varlistentry>
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</variablelist>
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</section>
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</chapter>
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