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|
{
config,
lib,
pkgs,
...
}:
let
cfg = config.services.emacs;
editorScript = pkgs.writeShellScriptBin "emacseditor" ''
if [ -z "$1" ]; then
exec ${cfg.package}/bin/emacsclient --create-frame --alternate-editor ${cfg.package}/bin/emacs
else
exec ${cfg.package}/bin/emacsclient --alternate-editor ${cfg.package}/bin/emacs "$@"
fi
'';
in
{
options.services.emacs = {
enable = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Whether to enable a user service for the Emacs daemon. Use `emacsclient` to connect to the
daemon. If `true`, {var}`services.emacs.install` is
considered `true`.
'';
};
install = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
Whether to install a user service for the Emacs daemon. Once
the service is started, use emacsclient to connect to the
daemon.
The service must be manually started for each user with
"systemctl --user start emacs" or globally through
{var}`services.emacs.enable`.
'';
};
package = lib.mkPackageOption pkgs "emacs" { };
defaultEditor = lib.mkOption {
type = lib.types.bool;
default = false;
description = ''
When enabled, configures emacsclient to be the default editor
using the EDITOR environment variable.
'';
};
startWithGraphical = lib.mkOption {
type = lib.types.bool;
default = config.services.xserver.enable;
defaultText = lib.literalExpression "config.services.xserver.enable";
description = ''
Start emacs with the graphical session instead of any session. Without this, emacs clients will not be able to create frames in the graphical session.
'';
};
};
config = lib.mkIf (cfg.enable || cfg.install) {
systemd.user.services.emacs = {
description = "Emacs: the extensible, self-documenting text editor";
serviceConfig = {
Type = "notify";
ExecStart = "${pkgs.runtimeShell} -c 'source ${config.system.build.setEnvironment}; exec ${cfg.package}/bin/emacs --fg-daemon'";
# Emacs exits with exit code 15 (SIGTERM), when stopped by systemd.
SuccessExitStatus = 15;
Restart = "always";
};
unitConfig = lib.optionalAttrs cfg.startWithGraphical {
After = "graphical-session.target";
};
# Long-lived session that ought to only be restarted manually
restartIfChanged = false;
}
// lib.optionalAttrs cfg.enable {
wantedBy = if cfg.startWithGraphical then [ "graphical-session.target" ] else [ "default.target" ];
};
environment.systemPackages = [
cfg.package
editorScript
];
environment.sessionVariables.EDITOR = lib.mkIf cfg.defaultEditor (lib.mkOverride 900 "emacseditor");
};
meta.doc = ./emacs.md;
}
|
