Fixed #35774 -- Dropped support for GEOS 3.8.

GEOS 3.8 (released Oct-2019) will be more than 5 years old when
Django 6.1 is released (Aug-2026).

Author: smithdc1

docs/ref/contrib/gis/geos.txt

@@ -712,7 +712,7 @@ Other Properties & Methods
     the input vertices. If the geometry is already valid, it is returned
     untouched. This is similar to the
     :class:`~django.contrib.gis.db.models.functions.MakeValid` database
-    function. Requires GEOS 3.8.
+    function.
 
 .. method:: GEOSGeometry.normalize(clone=False)
 

docs/ref/contrib/gis/install/geolibs.txt

@@ -13,7 +13,7 @@ geospatial libraries:
 ==============================  ====================================  ================================  =======================================================
 Program                         Description                           Required                          Supported Versions
 ==============================  ====================================  ================================  =======================================================
-:ref:`GEOS <geos-overview>`     Geometry Engine Open Source           Yes                               3.14, 3.13, 3.12, 3.11, 3.10, 3.9, 3.8
+:ref:`GEOS <geos-overview>`     Geometry Engine Open Source           Yes                               3.14, 3.13, 3.12, 3.11, 3.10, 3.9
 `PROJ`_                         Cartographic Projections library      Yes (PostgreSQL and SQLite only)  9.x, 8.x, 7.x, 6.x
 :ref:`GDAL <gdal-overview>`     Geospatial Data Abstraction Library   Yes                               3.11, 3.10, 3.9, 3.8, 3.7, 3.6, 3.5, 3.4, 3.3, 3.2, 3.1
 :ref:`GeoIP <geoip2-overview>`  IP-based geolocation library          No                                2
@@ -26,7 +26,6 @@ totally fine with GeoDjango. Your mileage may vary.
 
 ..
     Libs release dates:
-    GEOS 3.8.0 2019-10-10
     GEOS 3.9.0 2020-12-14
     GEOS 3.10.0 2021-10-20
     GEOS 3.11.0 2022-07-01

docs/releases/6.1.txt

@@ -338,6 +338,8 @@ backends.
 
 * Support for PostGIS 3.1 is removed.
 
+* Support for GEOS 3.8 is removed.
+
 :mod:`django.contrib.postgres`
 ------------------------------
 

tests/gis_tests/geos_tests/test_geos.py

@@ -1295,11 +1295,9 @@ def test_emptyCollections(self):
 
                 # Testing __getitem__ (doesn't work on Point or Polygon)
                 if isinstance(g, Point):
-                    # IndexError is not raised in GEOS 3.8.0.
-                    if geos_version_tuple() != (3, 8, 0):
-                        msg = "Invalid GEOS Geometry index:"
-                        with self.assertRaisesMessage(IndexError, msg):
-                            g.x
+                    msg = "Invalid GEOS Geometry index:"
+                    with self.assertRaisesMessage(IndexError, msg):
+                        g.x
                 elif isinstance(g, Polygon):
                     lr = g.shell
                     self.assertEqual("LINEARRING EMPTY", lr.wkt)