Allow changing the 1Password package

Author: Aigeruth

nix/shell-plugins.nix

@@ -21,6 +21,7 @@ in {
   options = {
     programs._1password-shell-plugins = {
       enable = mkEnableOption "1Password Shell Plugins";
+      package = mkPackageOption pkgs "_1password" { };
       plugins = mkOption {
         type = types.listOf types.package;
         default = [ ];
@@ -62,7 +63,7 @@ in {
       name = package;
       value = "op plugin run -- ${package}";
     }) pkg-exe-names);
-    packages = [ pkgs._1password ] ++ cfg.plugins;
+    packages = [ cfg.package ] ++ cfg.plugins;
   in mkIf cfg.enable (mkMerge [
     ({
       programs = {