fzfmenu: make -name and -title configurable

krebs/5pkgs/simple/fzfmenu/default.nix

@@ -1,4 +1,31 @@
-{ pkgs, ... }:
+with import <stockholm/lib>;
+{ pkgs, ... }@args:
+
+let
+  # config cannot be declared in the input attribute set because that would
+  # cause callPackage to inject the wrong config.  Instead, get it from ...
+  # via args.
+  config = args.config or {};
+
+  cfg = eval.config;
+
+  eval = evalModules {
+    modules = singleton {
+      _file = toString ./profile.nix;
+      imports = singleton config;
+      options = {
+        appName = mkOption {
+          default = "fzfmenu";
+          type = types.label;
+        };
+        windowTitle = mkOption {
+          default = "fzfmenu";
+          type = types.str;
+        };
+      };
+    };
+  };
+in
 
 pkgs.writeDashBin "fzfmenu" ''
   set -efu
@@ -34,7 +61,8 @@ pkgs.writeDashBin "fzfmenu" ''
   OUTPUT="$(${pkgs.coreutils}/bin/mktemp)"
   if [ -z ''${TERM+x} ]; then #check if we can print fzf in the shell
     ${pkgs.rxvt_unicode}/bin/urxvt \
-      -name fzfmenu -title fzfmenu \
+      -name ${cfg.appName} \
+      -title ${shell.escape cfg.windowTitle} \
       -e ${pkgs.dash}/bin/dash -c \
         "echo \"$INPUT\" | ${pkgs.fzf}/bin/fzf \
           --history=/dev/null \