sxhkd: configurable package and command line arguments

Fixes #1598.

modules/services/sxhkd.nix

@@ -22,6 +22,20 @@ in
   options.services.sxhkd = {
     enable = mkEnableOption "simple X hotkey daemon";
 
+    package = mkOption {
+      type = types.package;
+      default = pkgs.sxhkd;
+      defaultText = "pkgs.sxhkd";
+      description = "Package containing the <command>sxhkd</command> executable.";
+    };
+
+    extraOptions = mkOption {
+      type = types.listOf types.str;
+      default = [ ];
+      description = "Command line arguments to invoke <command>sxhkd</command> with.";
+      example = literalExample ''[ "-m 1" ]'';
+    };
+
     keybindings = mkOption {
       type = types.attrsOf (types.nullOr types.str);
       default = {};
@@ -75,7 +89,7 @@ in
           + "${config.home.profileDirectory}/bin"
           + optionalString (cfg.extraPath != "") ":"
           + cfg.extraPath;
-        ExecStart = "${pkgs.sxhkd}/bin/sxhkd";
+        ExecStart = "${cfg.package}/bin/sxhkd ${toString cfg.extraOptions}";
       };
 
       Install = {

tests/modules/services/sxhkd/configuration.nix

@@ -3,6 +3,10 @@
     services.sxhkd = {
       enable = true;
 
+      package = pkgs.runCommandLocal "dummy-package" { } "mkdir $out" // {
+        outPath = "@sxhkd@";
+      };
+
       keybindings = {
         "super + a" = "run command a";
         "super + b" = null;
@@ -19,9 +23,6 @@
       '';
     };
 
-    nixpkgs.overlays =
-      [ (self: super: { sxhkd = pkgs.writeScriptBin "dummy-sxhkd" ""; }) ];
-
     nmt.script = ''
       sxhkdrc=home-files/.config/sxhkd/sxhkdrc
 

tests/modules/services/sxhkd/service.nix

@@ -1,8 +1,10 @@
-{ config, ... }:
+{ config, pkgs, ... }:
 {
   config = {
     services.sxhkd = {
       enable = true;
+      package = pkgs.runCommandLocal "dummy-package" { } "mkdir $out" // { outPath = "@sxhkd@"; };
+      extraOptions = [ "-m 1" ];
       extraPath = "/home/the-user/bin:/extra/path/bin";
     };
 
@@ -11,7 +13,7 @@
 
       assertFileExists $serviceFile
 
-      assertFileRegex $serviceFile 'ExecStart=.*/bin/sxhkd'
+      assertFileRegex $serviceFile 'ExecStart=@sxhkd@/bin/sxhkd -m 1'
 
       assertFileRegex $serviceFile \
         'Environment=PATH=.*\.nix-profile/bin:/home/the-user/bin:/extra/path/bin'