From f9ae2b7dac309b0b085840655051cd98a814fff0 Mon Sep 17 00:00:00 2001
From: Frederik Rietdijk <fridh@fridh.nl>
Date: Sat, 29 Aug 2020 14:57:03 +0200
Subject: [PATCH] pythonPackages.django_3: init at 3.1

---
 pkgs/development/python-modules/django/3.nix  | 48 +++++++++++++++++++
 .../django/django_3_set_geos_gdal_lib.patch   | 24 ++++++++++
 pkgs/top-level/python-packages.nix            |  2 +
 3 files changed, 74 insertions(+)
 create mode 100644 pkgs/development/python-modules/django/3.nix
 create mode 100644 pkgs/development/python-modules/django/django_3_set_geos_gdal_lib.patch

diff --git a/pkgs/development/python-modules/django/3.nix b/pkgs/development/python-modules/django/3.nix
new file mode 100644
index 000000000000..dc8a40a3d88e
--- /dev/null
+++ b/pkgs/development/python-modules/django/3.nix
@@ -0,0 +1,48 @@
+{ stdenv
+, buildPythonPackage
+, fetchPypi
+, substituteAll
+, geos
+, gdal
+, asgiref
+, pytz
+, sqlparse
+, pythonOlder
+, withGdal ? false
+}:
+
+buildPythonPackage rec {
+  pname = "Django";
+  version = "3.1";
+
+  disabled = pythonOlder "3.7";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "2d390268a13c655c97e0e2ede9d117007996db692c1bb93eabebd4fb7ea7012b";
+  };
+
+  patches = stdenv.lib.optional withGdal
+    (substituteAll {
+      src = ./django_3_set_geos_gdal_lib.patch;
+      geos = geos;
+      gdal = gdal;
+      extension = stdenv.hostPlatform.extensions.sharedLibrary;
+    });
+
+  propagatedBuildInputs = [
+    asgiref
+    pytz
+    sqlparse
+  ];
+
+  # too complicated to setup
+  doCheck = false;
+
+  meta = with stdenv.lib; {
+    description = "A high-level Python Web framework";
+    homepage = "https://www.djangoproject.com/";
+    license = licenses.bsd3;
+    maintainers = with maintainers; [ georgewhewell lsix ];
+  };
+}
diff --git a/pkgs/development/python-modules/django/django_3_set_geos_gdal_lib.patch b/pkgs/development/python-modules/django/django_3_set_geos_gdal_lib.patch
new file mode 100644
index 000000000000..6b853f8d85f0
--- /dev/null
+++ b/pkgs/development/python-modules/django/django_3_set_geos_gdal_lib.patch
@@ -0,0 +1,24 @@
+diff -Nur a/django/contrib/gis/gdal/libgdal.py b/django/contrib/gis/gdal/libgdal.py
+--- a/django/contrib/gis/gdal/libgdal.py	2020-07-09 22:34:05.330568948 +0100
++++ b/django/contrib/gis/gdal/libgdal.py	2020-07-09 22:35:08.679095615 +0100
+@@ -14,7 +14,7 @@
+     from django.conf import settings
+     lib_path = settings.GDAL_LIBRARY_PATH
+ except (AttributeError, ImportError, ImproperlyConfigured, OSError):
+-    lib_path = None
++    lib_path = "@gdal@/lib/libgdal@extension@"
+
+ if lib_path:
+     lib_names = None
+diff -Nur a/django/contrib/gis/geos/libgeos.py b/django/contrib/gis/geos/libgeos.py
+--- a/django/contrib/gis/geos/libgeos.py	2020-07-09 22:34:05.331568941 +0100
++++ b/django/contrib/gis/geos/libgeos.py	2020-07-09 22:36:24.863526276 +0100
+@@ -24,7 +24,7 @@
+         from django.conf import settings
+         lib_path = settings.GEOS_LIBRARY_PATH
+     except (AttributeError, ImportError, ImproperlyConfigured, OSError):
+-        lib_path = None
++        lib_path = "@geos@/lib/libgeos_c@extension@"
+
+     # Setting the appropriate names for the GEOS-C library.
+     if lib_path:
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 945f55adc70d..cf6b4235090c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1599,6 +1599,8 @@ in {
 
   django_2_2 = callPackage ../development/python-modules/django/2_2.nix { };
 
+  django_3 = callPackage ../development/python-modules/django/3.nix { };
+
   django-allauth = callPackage ../development/python-modules/django-allauth { };
 
   django-anymail = callPackage ../development/python-modules/django-anymail { };