86 lines
2.4 KiB
Nix
86 lines
2.4 KiB
Nix
{ config, lib, pkgs, ... }:
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with lib;
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let
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cfg = config.services.emacs;
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editorScript = pkgs.writeScriptBin "emacseditor" ''
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#!${pkgs.stdenv.shell}
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if [ -z "$1" ]; then
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exec ${cfg.package}/bin/emacsclient --create-frame --alternate-editor ${cfg.package}/bin/emacs
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else
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exec ${cfg.package}/bin/emacsclient --alternate-editor ${cfg.package}/bin/emacs "$@"
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fi
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'';
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in {
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options.services.emacs = {
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enable = mkOption {
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type = types.bool;
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default = false;
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example = true;
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description = ''
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Whether to enable a user service for the Emacs daemon. Use <literal>emacsclient</literal> to connect to the
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daemon. If <literal>true</literal>, <varname>services.emacs.install</varname> is
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considered <literal>true</literal>, whatever its value.
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'';
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};
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install = mkOption {
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type = types.bool;
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default = false;
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example = true;
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description = ''
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Whether to install a user service for the Emacs daemon. Once
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the service is started, use emacsclient to connect to the
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daemon.
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The service must be manually started for each user with
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"systemctl --user start emacs" or globally through
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<varname>services.emacs.enable</varname>.
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'';
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};
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package = mkOption {
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type = types.package;
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default = pkgs.emacs;
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defaultText = "pkgs.emacs";
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description = ''
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emacs derivation to use.
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'';
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};
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defaultEditor = mkOption {
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type = types.bool;
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default = false;
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example = true;
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description = ''
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When enabled, configures emacsclient to be the default editor
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using the EDITOR environment variable.
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'';
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};
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};
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config = mkIf (cfg.enable || cfg.install) {
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systemd.user.services.emacs = {
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description = "Emacs: the extensible, self-documenting text editor";
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serviceConfig = {
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Type = "forking";
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ExecStart = "${pkgs.bash}/bin/bash -c 'source ${config.system.build.setEnvironment}; exec ${cfg.package}/bin/emacs --daemon'";
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ExecStop = "${cfg.package}/bin/emacsclient --eval (kill-emacs)";
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Restart = "always";
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};
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} // optionalAttrs cfg.enable { wantedBy = [ "default.target" ]; };
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environment.systemPackages = [ cfg.package editorScript ];
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environment.variables = if cfg.defaultEditor then {
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EDITOR = mkOverride 900 "${editorScript}/bin/emacseditor";
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} else {};
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};
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}
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