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nixos/programs/sessiond: init
This commit is contained in:
parent
d1dc2953c7
commit
1d3bc3c013
@ -5,6 +5,7 @@
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./programs/distrobox.nix
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./programs/distrobox.nix
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./programs/gnome-session
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./programs/gnome-session
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./programs/pop-launcher.nix
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./programs/pop-launcher.nix
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./programs/sessiond
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./programs/wezterm.nix
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./programs/wezterm.nix
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./services/archivebox.nix
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./services/archivebox.nix
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./services/gallery-dl.nix
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./services/gallery-dl.nix
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124
modules/nixos/programs/sessiond/default.nix
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124
modules/nixos/programs/sessiond/default.nix
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@ -0,0 +1,124 @@
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{ config, lib, pkgs, utils, ... }:
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let
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cfg = config.programs.sessiond;
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sessionPackages = lib.mapAttrsToList
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(name: session:
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let
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displaySession = ''
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[Desktop Entry]
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Name=${session.fullName}
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Comment=${session.description}
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Exec="@out@/libexec/${name}-session"
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Type=Application
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DesktopNames=${lib.concatStringsSep ";" session.desktopNames};
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'';
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sessionScript = ''
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#!${pkgs.runtimeShell}
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${lib.getExe' cfg.package "sessionctl"} run "${name}.target"
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'';
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in
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pkgs.runCommandLocal "${name}-desktop-session-files"
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{
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inherit displaySession sessionScript;
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passAsFile = [ "displaySession" "sessionScript" ];
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passthru.providedSessions = [ name ];
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}
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''
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SESSION_SCRIPT="$out/libexec/${name}-session"
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install -Dm0755 "$sessionScriptPath" "$SESSION_SCRIPT"
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substituteAllInPlace "$SESSION_SCRIPT"
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DISPLAY_SESSION_FILE="$out/share/xsessions/${name}.desktop"
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install -Dm0644 "$displaySessionPath" "$DISPLAY_SESSION_FILE"
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substituteAllInPlace "$DISPLAY_SESSION_FILE"
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''
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)
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cfg.sessions;
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sessionSystemdUnits = lib.mapAttrsToList
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(name: session:
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let
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inherit (utils.systemdUtils.lib)
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pathToUnit serviceToUnit targetToUnit timerToUnit socketToUnit;
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sessionComponents =
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lib.foldlAttrs
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(acc: name: component:
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acc // {
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"${component.id}.service" = serviceToUnit component.id component.serviceUnit;
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"${component.id}.target" = targetToUnit component.id component.targetUnit;
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} // lib.optionalAttrs (component.socketUnit != null) {
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"${component.id}.socket" = socketToUnit component.id component.socketUnit;
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} // lib.optionalAttrs (component.timerUnit != null) {
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"${component.id}.timer" = timerToUnit component.id component.timerUnit;
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} // lib.optionalAttrs (component.pathUnit != null) {
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"${component.id}.path" = pathToUnit component.id component.pathUnit;
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})
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{ }
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session.components;
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in
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sessionComponents // {
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"${name}.service" = serviceToUnit name session.serviceUnit;
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"${name}.target" = targetToUnit name session.targetUnit;
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}
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)
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cfg.sessions;
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in
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{
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options.programs.sessiond = {
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package = lib.mkOption {
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type = lib.types.package;
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default = pkgs.sessiond;
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defaultText = "pkgs.sessiond";
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description = ''
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The package containing sessiond executable and systemd units. This
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module will use the `sessiond` executable for the generated session
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script.
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'';
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};
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sessions = lib.mkOption {
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type = with lib.types; attrsOf (submoduleWith {
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specialArgs = {
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inherit utils pkgs;
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sessiondPkg = cfg.package;
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};
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modules = [ ./submodules/session-type.nix ];
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});
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description = ''
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A set of desktop sessions to be configured with sessiond. Each of the
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attribute name will be used as the identifier of the desktop
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environment.
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::: {.tip}
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While you can make identifiers in any way, it is
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encouraged to stick to a naming scheme. Here's two common ways to name
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a desktop environment.
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* Reverse DNS-like scheme (e.g., `com.example.MoseyBranch`).
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* Kebab-case (e.g., `mosey-branch`).
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:::
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'';
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default = { };
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};
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};
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config = lib.mkIf (cfg.sessions != { }) {
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environment.systemPackages = [ cfg.package ];
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# Install all of the desktop session files.
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services.xserver.displayManager.sessionPackages = sessionPackages;
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# Import those systemd units from sessiond as well.
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systemd.packages = [ cfg.package ];
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systemd.user.units = lib.mkMerge sessionSystemdUnits;
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# We're disabling the upstream sessiond service since there can be multiple
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# sessiond sessions here.
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systemd.user.services.sessiond.enable = false;
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};
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}
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228
modules/nixos/programs/sessiond/submodules/component-type.nix
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228
modules/nixos/programs/sessiond/submodules/component-type.nix
Normal file
@ -0,0 +1,228 @@
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{ name, config, lib, session, utils, ... }: {
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options = {
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description = lib.mkOption {
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type = lib.types.nonEmptyStr;
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description = "One-sentence description of the component.";
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example = "Desktop widgets";
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};
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# Most of the systemd config types are trying to eliminate as much of the
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# NixOS systemd extensions as much as possible. For more details, see
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# `config` attribute of the `sessionType`.
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serviceUnit = lib.mkOption {
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type =
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let
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inherit (utils.systemdUtils.lib) unitConfig serviceConfig;
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inherit (utils.systemdUtils.unitOptions) commonUnitOptions serviceOptions;
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in
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lib.types.submodule [
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commonUnitOptions
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serviceOptions
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serviceConfig
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unitConfig
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];
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description = ''
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systemd service configuration to be generated. This should be
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configured if the session is managed by systemd.
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:::{.note}
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This has the same options as {option}`systemd.user.services.<name>`
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but without certain options from stage 2 counterparts such as
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`reloadTriggers` and `restartTriggers`.
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By default, this module sets the service unit as part of the respective
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target unit (i.e., `PartOf=$COMPONENTID.target`).
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On a typical case, you shouldn't mess with much of the dependency
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ordering with the service unit. You should configure `targetUnit` for
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that instead.
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:::
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'';
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default = { };
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};
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targetUnit = lib.mkOption {
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type =
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let
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inherit (utils.systemdUtils.lib) unitConfig;
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inherit (utils.systemdUtils.unitOptions) commonUnitOptions;
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in
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lib.types.submodule [
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commonUnitOptions
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unitConfig
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];
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description = ''
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systemd target configuration to be generated. This should be
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configured if the session is managed by systemd.
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:::{.note}
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This is generated by default alongside the service where it is
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configured to be a part of the target unit.
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This has the same options as {option}`systemd.user.targets.<name>`
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but without certain options from stage 2 counterparts such as
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`reloadTriggers` and `restartTriggers`.
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:::
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'';
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default = { };
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};
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timerUnit = lib.mkOption {
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type =
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let
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inherit (utils.systemdUtils.unitOptions) timerOptions commonUnitOptions;
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inherit (utils.systemdUtils.lib) unitConfig;
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in
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with lib.types; nullOr (submodule [
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commonUnitOptions
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timerOptions
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unitConfig
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]);
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description = ''
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An optional systemd timer configuration to be generated. This should
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be configured if the session is managed by systemd.
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:::{.note}
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This has the same options as {option}`systemd.user.timers.<name>`
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but without certain options from stage 2 counterparts such as
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`reloadTriggers` and `restartTriggers`.
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:::
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'';
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default = null;
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};
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socketUnit = lib.mkOption {
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type =
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let
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inherit (utils.systemdUtils.unitOptions) socketOptions commonUnitOptions;
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inherit (utils.systemdUtils.lib) unitConfig;
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in
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with lib.types; nullOr (submodule [
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commonUnitOptions
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socketOptions
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unitConfig
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]);
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description = ''
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An optional systemd socket configuration to be generated. This should
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be configured if the session is managed by systemd.
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:::{.note}
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This has the same options as {option}`systemd.user.sockets.<name>`
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but without certain options from stage 2 counterparts such as
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`reloadTriggers` and `restartTriggers`.
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:::
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'';
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default = null;
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};
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pathUnit = lib.mkOption {
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type =
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let
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inherit (utils.systemdUtils.unitOptions) pathOptions commonUnitOptions;
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inherit (utils.systemdUtils.lib) unitConfig;
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in
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with lib.types; nullOr (submodule [
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commonUnitOptions
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pathOptions
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unitConfig
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]);
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description = ''
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An optional systemd path configuration to be generated. This should
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be configured if the session is managed by systemd.
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:::{.note}
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This has the same options as {option}`systemd.user.paths.<name>`
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|
but without certain options from stage 2 counterparts such as
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||||||
|
`reloadTriggers` and `restartTriggers`.
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||||||
|
:::
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|
'';
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default = null;
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||||||
|
};
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|
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id = lib.mkOption {
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type = lib.types.str;
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description = ''
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|
The identifier of the component used in generating filenames for its
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`.desktop` files and as part of systemd unit names.
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'';
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default = "${session.name}.${name}";
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defaultText = "\${session-name}.\${name}";
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readOnly = true;
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|
};
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||||||
|
};
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config = {
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/*
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|
Setting some recommendation and requirements for sessiond components.
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Note there are the missing directives that COULD include some sane
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defaults here.
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* The `Unit.OnFailure=` and `Unit.OnFailureJobMode=` directives. Since
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different components don't have the same priority and don't handle
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failures the same way, we didn't set it here. This is on the user to
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know how different desktop components interact with each other
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especially if one of them failed.
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TODO: Is `Type=notify` a good default?
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* `Service.Type=` is obviously not included since not all desktop
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components are the same either. Some of them could a D-Bus service,
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some of them are oneshots, etc. Not to mention, this is already implied
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to be `Type=simple` by systemd anyways.
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* `Service.OOMScoreAdjust=` have different values for different
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components so it isn't included.
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* Most sandboxing options. Aside from the fact we're dealing with a
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systemd user unit, much of them are unnecessary and rarely needed (if
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ever like `Service.PrivateTmp=`?) so we didn't set such defaults here.
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As you can tell, this module does not provide a framework for the user
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to easily compose their own desktop environment. THIS MODULE ALREADY
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DOES A LOT, ALRIGHT! CUT ME SOME SLACK!
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|
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Take note that the default service configuration is leaning on the
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desktop component being a simple type of service like how most NixOS
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service modules are deployed.
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|
*/
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serviceUnit = {
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description = lib.mkDefault config.description;
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|
|
||||||
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# The typical workflow for service units to have them set as part of
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||||||
|
# the respective target unit.
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|
requisite = [ "${config.id}.target" ];
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before = [ "${config.id}.target" ];
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|
partOf = [ "${config.id}.target" ];
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||||||
|
# Some sane service configuration for a desktop component.
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serviceConfig = {
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Slice = lib.mkDefault "session.slice";
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|
Restart = lib.mkDefault "on-failure";
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|
TimeoutStopSec = lib.mkDefault 5;
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|
};
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|
|
||||||
|
startLimitBurst = lib.mkDefault 3;
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|
startLimitIntervalSec = lib.mkDefault 15;
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|
|
||||||
|
unitConfig = {
|
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|
# We leave those up to the target units to start the services.
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|
RefuseManualStart = lib.mkDefault true;
|
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|
RefuseManualStop = lib.mkDefault true;
|
||||||
|
};
|
||||||
|
};
|
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|
|
||||||
|
/*
|
||||||
|
Similarly, there are things that COULD make it here but didn't for a
|
||||||
|
variety of reasons.
|
||||||
|
|
||||||
|
* `Unit.PartOf=`, `Unit.Requisite=`, and the like since some components
|
||||||
|
require starting up earlier than the others. We could include it here
|
||||||
|
if we make it clear in the documentation or if it proves to be a
|
||||||
|
painful experience to configure this by a first-timer. For now, this is
|
||||||
|
on the user to know.
|
||||||
|
*/
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||||||
|
targetUnit = {
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|
wants = [ "${config.id}.service" ];
|
||||||
|
description = lib.mkDefault config.description;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
}
|
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235
modules/nixos/programs/sessiond/submodules/session-type.nix
Normal file
235
modules/nixos/programs/sessiond/submodules/session-type.nix
Normal file
@ -0,0 +1,235 @@
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|||||||
|
{ name, config, pkgs, lib, utils, sessiondPkg, ... }:
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|
|
||||||
|
let
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|
# For an updated list, see `menu/menu-spec.xml` from
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|
# https://gitlab.freedesktop.org/xdg/xdg-specs.
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|
validDesktopNames = [
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|
"GNOME"
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"GNOME-Classic"
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"GNOME-Flashback"
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|
"KDE"
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||||||
|
"LXDE"
|
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|
"LXQt"
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||||||
|
"MATE"
|
||||||
|
"Razor"
|
||||||
|
"ROX"
|
||||||
|
"TDE"
|
||||||
|
"Unity"
|
||||||
|
"XFCE"
|
||||||
|
"EDE"
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||||||
|
"Cinnamon"
|
||||||
|
"Pantheon"
|
||||||
|
"Budgie"
|
||||||
|
"Enlightenment"
|
||||||
|
"DDE"
|
||||||
|
"Endless"
|
||||||
|
"Old"
|
||||||
|
];
|
||||||
|
|
||||||
|
# This is used both as the configuration format for sessiond.conf and its
|
||||||
|
# hooks.
|
||||||
|
settingsFormat = pkgs.formats.toml { };
|
||||||
|
sessionSettingsFile = settingsFormat.generate "sessiond-conf-${name}" config.settings;
|
||||||
|
in
|
||||||
|
{
|
||||||
|
options = {
|
||||||
|
fullName = lib.mkOption {
|
||||||
|
type = lib.types.nonEmptyStr;
|
||||||
|
description = "The display name of the desktop environment.";
|
||||||
|
default = name;
|
||||||
|
example = "Mosey Branch";
|
||||||
|
};
|
||||||
|
|
||||||
|
desktopNames = lib.mkOption {
|
||||||
|
type = with lib.types; listOf nonEmptyStr;
|
||||||
|
description = ''
|
||||||
|
Names to be used as `DesktopNames=` entry of the session `.desktop`
|
||||||
|
file. Useful if you're creating a customized version of an already
|
||||||
|
existing desktop session.
|
||||||
|
|
||||||
|
::: {.note}
|
||||||
|
This module sanitizes the values by prepending the given names with
|
||||||
|
`X-` if they aren't part of the registered values from XDG spec.
|
||||||
|
:::
|
||||||
|
'';
|
||||||
|
default = [ config.fullName ];
|
||||||
|
defaultText = "[ <session>.fullName ]";
|
||||||
|
apply = names:
|
||||||
|
builtins.map
|
||||||
|
(name:
|
||||||
|
if (lib.elem name validDesktopNames) || (lib.hasPrefix "X-" name) then
|
||||||
|
name
|
||||||
|
else
|
||||||
|
"X-${name}")
|
||||||
|
names;
|
||||||
|
example = [ "GNOME" "Garden" ];
|
||||||
|
};
|
||||||
|
|
||||||
|
settings = lib.mkOption {
|
||||||
|
type = settingsFormat.type;
|
||||||
|
default = { };
|
||||||
|
example = {
|
||||||
|
Idle = {
|
||||||
|
Inputs = [ "motion" "button-press" ];
|
||||||
|
IdleSec = 60;
|
||||||
|
};
|
||||||
|
|
||||||
|
Lock = {
|
||||||
|
OnIdle = true;
|
||||||
|
OnSleep = true;
|
||||||
|
};
|
||||||
|
|
||||||
|
DPMS.Enable = true;
|
||||||
|
};
|
||||||
|
description = ''
|
||||||
|
The settings associated with the sessiond session. For more
|
||||||
|
details, please see {manpage}`sessiond.conf(5)`. If not given, it
|
||||||
|
will use the default configuration from the compiled package.
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
description = lib.mkOption {
|
||||||
|
type = lib.types.nonEmptyStr;
|
||||||
|
description = ''
|
||||||
|
A one-sentence description of the desktop environment.
|
||||||
|
'';
|
||||||
|
default = "${config.fullName} desktop environment";
|
||||||
|
defaultText = lib.literalExpression "\${<name>.fullName} desktop environment";
|
||||||
|
example = "A desktop environment featuring a scrolling compositor.";
|
||||||
|
};
|
||||||
|
|
||||||
|
components = lib.mkOption {
|
||||||
|
type = with lib.types; attrsOf (submoduleWith {
|
||||||
|
specialArgs = {
|
||||||
|
inherit utils;
|
||||||
|
session = {
|
||||||
|
inherit (config) fullName desktopNames description;
|
||||||
|
inherit name;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
modules = [ ./component-type.nix ];
|
||||||
|
});
|
||||||
|
description = ''
|
||||||
|
The individual components to be launched with the desktop session.
|
||||||
|
'';
|
||||||
|
default = { };
|
||||||
|
example = lib.literalExpression ''
|
||||||
|
{
|
||||||
|
}
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
targetUnit = lib.mkOption {
|
||||||
|
type =
|
||||||
|
let
|
||||||
|
inherit (utils.systemdUtils.lib) unitConfig;
|
||||||
|
inherit (utils.systemdUtils.unitOptions) commonUnitOptions;
|
||||||
|
in
|
||||||
|
lib.types.submodule [
|
||||||
|
commonUnitOptions
|
||||||
|
unitConfig
|
||||||
|
];
|
||||||
|
description = ''
|
||||||
|
systemd target configuration to be generated for
|
||||||
|
`<name>.target`.
|
||||||
|
|
||||||
|
By default, the session target will have all of its components from
|
||||||
|
{option}`<session>.requiredComponents` under `Wants=` directive. It
|
||||||
|
also assumes all of them have a target unit at
|
||||||
|
`''${requiredComponent}.target`.
|
||||||
|
|
||||||
|
:::{.note}
|
||||||
|
This has the same options as {option}`systemd.user.targets.<name>`
|
||||||
|
but without certain options from stage 2 counterparts such as
|
||||||
|
`reloadTriggers` and `restartTriggers`.
|
||||||
|
:::
|
||||||
|
'';
|
||||||
|
defaultText = ''
|
||||||
|
{
|
||||||
|
wants = ... # All of the required components as a target unit.
|
||||||
|
}
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
serviceUnit = lib.mkOption {
|
||||||
|
type =
|
||||||
|
let
|
||||||
|
inherit (utils.systemdUtils.lib) unitConfig serviceConfig;
|
||||||
|
inherit (utils.systemdUtils.unitOptions) commonUnitOptions serviceOptions;
|
||||||
|
in
|
||||||
|
lib.types.submodule [
|
||||||
|
commonUnitOptions
|
||||||
|
serviceOptions
|
||||||
|
serviceConfig
|
||||||
|
unitConfig
|
||||||
|
];
|
||||||
|
description = ''
|
||||||
|
systemd service configuration to be generated for the sessiond session
|
||||||
|
itself.
|
||||||
|
|
||||||
|
:::{.note}
|
||||||
|
This has the same options as {option}`systemd.user.services.<name>`
|
||||||
|
but without certain options from stage 2 counterparts such as
|
||||||
|
`reloadTriggers` and `restartTriggers`.
|
||||||
|
|
||||||
|
By default, this module sets the service unit as part of the respective
|
||||||
|
target unit (i.e., `PartOf=$COMPONENTID.target`).
|
||||||
|
|
||||||
|
On a typical case, you shouldn't mess with much of the dependency
|
||||||
|
ordering with the service unit. You should configure `targetUnit` for
|
||||||
|
that instead.
|
||||||
|
:::
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
|
||||||
|
extraArgs = lib.mkOption {
|
||||||
|
type = with lib.types; listOf str;
|
||||||
|
description = ''
|
||||||
|
A list of arguments from {program}`sessiond` to be added for the session
|
||||||
|
script.
|
||||||
|
'';
|
||||||
|
example = lib.literalExpression ''
|
||||||
|
[
|
||||||
|
"--hooksd=''${./config/sessiond/hooks.d}"
|
||||||
|
]
|
||||||
|
'';
|
||||||
|
};
|
||||||
|
};
|
||||||
|
|
||||||
|
# Append the session argument.
|
||||||
|
config = {
|
||||||
|
extraArgs = lib.optional (config.settings != { }) "--config=${sessionSettingsFile}";
|
||||||
|
|
||||||
|
targetUnit = {
|
||||||
|
description = config.description;
|
||||||
|
requires = [ "${name}.service" ];
|
||||||
|
wants =
|
||||||
|
let
|
||||||
|
componentTargetUnits =
|
||||||
|
lib.mapAttrsToList (_: component: "${component.id}.target") config.components;
|
||||||
|
in
|
||||||
|
componentTargetUnits;
|
||||||
|
};
|
||||||
|
|
||||||
|
serviceUnit = {
|
||||||
|
description = config.description;
|
||||||
|
partOf = [ "${name}.target" ];
|
||||||
|
before = [ "${name}.target" ];
|
||||||
|
requisite = [ "${name}.target" ];
|
||||||
|
requires = [ "dbus.socket" ];
|
||||||
|
after = [ "dbus.socket" ];
|
||||||
|
|
||||||
|
serviceConfig = {
|
||||||
|
Type = lib.mkForce "dbus";
|
||||||
|
BusName = lib.mkForce "org.sessiond.session1";
|
||||||
|
ExecStart = lib.mkForce "${lib.getExe' sessiondPkg "sessiond"} ${lib.concatStringsSep " " config.extraArgs}";
|
||||||
|
Restart = "always";
|
||||||
|
};
|
||||||
|
|
||||||
|
unitConfig = {
|
||||||
|
RefuseManualStart = true;
|
||||||
|
RefuseManualStop = true;
|
||||||
|
};
|
||||||
|
};
|
||||||
|
};
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue
Block a user