https://github.com/brandon-rhodes/pyephem/commit/df7bba8e27208fbe335b0ac2f79ae77818f52dd3
https://bugs.gentoo.org/874543

From df7bba8e27208fbe335b0ac2f79ae77818f52dd3 Mon Sep 17 00:00:00 2001
From: Khem Raj <raj.khem@gmail.com>
Date: Wed, 31 Aug 2022 02:58:26 -0700
Subject: [PATCH] Don't set tp_print on Python 3 (#245)

In 3.8 it produces a compilation warning; in earlier versions it is ignored.
--- a/extensions/_libastro.c
+++ b/extensions/_libastro.c
@@ -372,7 +372,11 @@ static PyTypeObject AngleType = {
      sizeof(AngleObject),
      0,
      0,				/* tp_dealloc */
+#if PY_MAJOR_VERSION < 3
      Angle_print,		/* tp_print */
+#else
+     0,				/* reserved in 3.x */
+#endif
      0,				/* tp_getattr */
      0,				/* tp_setattr */
      0,				/* tp_compare */
@@ -669,7 +673,11 @@ static PyTypeObject DateType = {
      sizeof(PyFloatObject),
      0,
      0,				/* tp_dealloc */
+#if PY_MAJOR_VERSION < 3
      Date_print,		/* tp_print */
+#else
+     0,				/* tp_print slot is reserved and unused in Python 3 */
+#endif
      0,				/* tp_getattr */
      0,				/* tp_setattr */
      0,				/* tp_compare */