Use inspect.signature instead of deprecated formatargspec

sympy-signature.patch

@@ -0,0 +1,23 @@
+From c800c12c035c1531f42342a535895db18c15c6b6 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Miro=20Hron=C4=8Dok?= <miro@hroncok.cz>
+Date: Fri, 17 Jun 2022 01:43:10 +0200
+Subject: [PATCH] Use inspect.signature instead of deprecated formatargspec
+
+---
+ doc/ext/docscrape.py | 3 +--
+ 1 file changed, 1 insertion(+), 2 deletions(-)
+
+diff --git a/doc/ext/docscrape.py b/doc/ext/docscrape.py
+index 6e94b4964c2..d0eeeed7e8b 100644
+--- a/doc/ext/docscrape.py
++++ b/doc/ext/docscrape.py
+@@ -462,8 +462,7 @@ def __init__(self, func, role='func', doc=None, config={}):
+             func, func_name = self.get_func()
+             try:
+                 # try to read signature
+-                argspec = inspect.getfullargspec(func)
+-                argspec = inspect.formatargspec(*argspec)
++                argspec = str(inspect.signature(func))
+                 argspec = argspec.replace('*', r'\*')
+                 signature = '{}{}'.format(func_name, argspec)
+             except TypeError as e:

sympy.spec

@@ -15,6 +15,8 @@ Patch0:         %{name}-circuitplot.patch
 Patch1:         %{name}-tests.patch
 # Don't let deprecation warnings from distutils cause test failures
 Patch2:         %{name}-distutils.patch
+# Use inspect.signature instead of deprecated formatargspec
+Patch3:         %{name}-signature.patch
 
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