improve otp menu

custom-pkgs/otp/package.nix

@@ -1,18 +1,22 @@
-{ pkgs, pkgs-unstable }:
-let
-  yubikey-manager = pkgs-unstable.yubikey-manager;
-  ykman = "${yubikey-manager}/bin/ykman";
-  sk = "${pkgs.skim}/bin/sk";
-  wl-copy = "${pkgs.wl-clipboard}/bin/wl-copy";
-in
-pkgs.writeShellScriptBin "otp" ''
-  skim_command=("${sk}")
-
-  if [ -n "$*" ]; then
-    skim_command+=(-q "$*")
-  fi
-
-  account=$(${ykman} oath accounts list | "''${skim_command[@]}")
-  [ -z "$account" ] && exit 1
-  ${ykman} oath accounts code -s "$account" | ${wl-copy} -n
-''
+{
+  pkgs,
+  lib,
+  pkgs-unstable,
+}:
+pkgs.runCommand "otp"
+  {
+    code = ./otp.cr;
+    env = {
+      YKMAN = lib.getExe pkgs-unstable.yubikey-manager;
+      SKIM = lib.getExe pkgs.skim;
+      WALKER = lib.getExe pkgs-unstable.walker;
+      WL_COPY = lib.getExe' pkgs.wl-clipboard "wl-copy";
+      NOTIFY_SEND = lib.getExe pkgs.libnotify;
+      NOTIFY_ICON = "${pkgs-unstable.yubioath-flutter}/share/pixmaps/com.yubico.yubioath.png";
+    };
+    nativeBuildInputs = [ pkgs.crystal ];
+  }
+  ''
+    mkdir -p $out/bin
+    crystal build $code --release -o $out/bin/otp
+  ''