From 51675584d823aabbfe028669c16731d3285f8d60 Mon Sep 17 00:00:00 2001
From: lojack5 <1458329+lojack5@users.noreply.github.com>
Date: Wed, 18 Oct 2023 14:25:09 -0600
Subject: [PATCH] Tentative: fix for ParamSpec on Python < 3.10

Alternate solution is to remove the callable typing on CallAfter and CallLater
---
 etgtools/pi_generator.py | 4 ++++
 requirements/devel.txt   | 1 +
 requirements/install.txt | 1 +
 3 files changed, 6 insertions(+)

diff --git a/etgtools/pi_generator.py b/etgtools/pi_generator.py
index e1c140ca..85ca6929 100644
--- a/etgtools/pi_generator.py
+++ b/etgtools/pi_generator.py
@@ -84,6 +84,10 @@ from enum import IntEnum, IntFlag, auto
 from typing import (Any, overload, TypeAlias, TypeVar, ParamSpec, Generic,
     Union, Optional, List, Tuple, Callable
 )
+try:
+    from typing import ParamSpec
+except ImportError:
+    from typing_extensions import ParamSpec
 
 """
 
diff --git a/requirements/devel.txt b/requirements/devel.txt
index cda34ed5..21f5c1af 100644
--- a/requirements/devel.txt
+++ b/requirements/devel.txt
@@ -22,3 +22,4 @@ markupsafe==1.1.1
 doc2dash==2.3.0
 beautifulsoup4
 attrdict3 ; sys_platform == 'win32'
+typing-extensions; python_version < '3.10'
diff --git a/requirements/install.txt b/requirements/install.txt
index 2061eda2..797a7243 100644
--- a/requirements/install.txt
+++ b/requirements/install.txt
@@ -3,3 +3,4 @@ numpy < 1.17 ; python_version <= '2.7'
 numpy ; python_version >= '3.0' and python_version < '3.12'
 # pillow < 3.0
 six
+typing-extensions; python_version < '3.10'
\ No newline at end of file