diff --git a/pkgs/applications/networking/mailreaders/evolution/evolution/0001-M-102-Port-to-libgweather4.patch b/pkgs/applications/networking/mailreaders/evolution/evolution/0001-M-102-Port-to-libgweather4.patch
new file mode 100644
index 000000000000..22e7e4a9ff13
--- /dev/null
+++ b/pkgs/applications/networking/mailreaders/evolution/evolution/0001-M-102-Port-to-libgweather4.patch
@@ -0,0 +1,379 @@
+From b90091b403c10266e56b2724c8d7f9749fa60807 Mon Sep 17 00:00:00 2001
+From: Jan Tojnar <jtojnar@gmail.com>
+Date: Sat, 19 Feb 2022 01:52:52 +0100
+Subject: [PATCH] M!102 - Port to libgweather4
+
+Adds support for linking against gweather4 (pass -DWITH_GWEATHER4=ON).
+
+Closes https://gitlab.gnome.org/GNOME/evolution/-/merge_requests/102
+---
+ CMakeLists.txt                                | 10 ++-
+ config.h.in                                   |  3 +
+ .../e-weather-location-entry.c                | 80 +++++++++++++++++--
+ .../evolution-cal-config-weather.c            | 41 +++++++++-
+ 4 files changed, 123 insertions(+), 11 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 7247d65f16..1ba2165b4d 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -92,6 +92,7 @@ set(geocode_glib_minimum_version 3.10)
+ set(gladeui_minimum_version 3.10.0)
+ set(gnome_autoar_minimum_version 0.1.1)
+ set(gweather_minimum_version 3.10)
++set(gweather4_minimum_version 3.91.0)
+ set(libcanberra_gtk_minimum_version 0.25)
+ set(libnotify_minimum_version 0.7)
+ set(libunity_minimum_version 7.1.4)
+@@ -668,7 +669,14 @@ endif(ENABLE_TEXT_HIGHLIGHT)
+ add_printable_option(ENABLE_WEATHER "Enable weather calendars" ON)
+ 
+ if(ENABLE_WEATHER)
+-	pkg_check_modules_for_option(ENABLE_WEATHER "weather calendar" GWEATHER gweather-3.0>=${gweather_minimum_version})
++	add_printable_variable(WITH_GWEATHER4 "Use GWeather 4 instead of 3" OFF)
++
++	if(WITH_GWEATHER4)
++		pkg_check_modules_for_option(ENABLE_WEATHER "weather calendar" GWEATHER gweather4>=${gweather4_minimum_version})
++	else(WITH_GWEATHER4)
++		pkg_check_modules_for_option(ENABLE_WEATHER "weather calendar" GWEATHER gweather-3.0>=${gweather_minimum_version})
++	endif(WITH_GWEATHER4)
++
+ 	pkg_check_modules_for_option(ENABLE_WEATHER "weather calendar" GEO geocode-glib-1.0>=${geocode_glib_minimum_version})
+ endif(ENABLE_WEATHER)
+ 
+diff --git a/config.h.in b/config.h.in
+index 881641355a..2b520a96bd 100644
+--- a/config.h.in
++++ b/config.h.in
+@@ -93,6 +93,9 @@
+ /* When defined GSpell usage is enabled */
+ #cmakedefine HAVE_GSPELL 1
+ 
++/* Defined when linking against gweather4. Cannot just use GWEATHER_CHECK_VERSION because 40.0 made the versions non-monotonic. */
++#cmakedefine WITH_GWEATHER4 1
++
+ /* Source code highlighting utility */
+ #cmakedefine HIGHLIGHT_COMMAND "@HIGHLIGHT_COMMAND@"
+ 
+diff --git a/src/modules/cal-config-weather/e-weather-location-entry.c b/src/modules/cal-config-weather/e-weather-location-entry.c
+index f4fb48c403..f4ff276633 100644
+--- a/src/modules/cal-config-weather/e-weather-location-entry.c
++++ b/src/modules/cal-config-weather/e-weather-location-entry.c
+@@ -125,9 +125,17 @@ finalize (GObject *object)
+ 	priv = entry->priv;
+ 
+ 	if (priv->location)
++		#ifdef WITH_GWEATHER4
++		g_object_unref (priv->location);
++		#else
+ 		gweather_location_unref (priv->location);
++		#endif
+ 	if (priv->top)
++		#ifdef WITH_GWEATHER4
++		g_object_unref (priv->top);
++		#else
+ 		gweather_location_unref (priv->top);
++		#endif
+ 	if (priv->model)
+ 		g_object_unref (priv->model);
+ 
+@@ -214,11 +222,15 @@ e_weather_location_entry_class_init (EWeatherLocationEntryClass *location_entry_
+ 
+ 	g_object_class_install_property (
+ 		object_class, PROP_TOP,
++		#ifdef WITH_GWEATHER4
++		g_param_spec_object ("top",
++		#else
+ 		g_param_spec_boxed ("top",
+-				    "Top Location",
+-				    "The GWeatherLocation whose children will be used to fill in the entry",
+-				    GWEATHER_TYPE_LOCATION,
+-				    G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
++		#endif
++				     "Top Location",
++				     "The GWeatherLocation whose children will be used to fill in the entry",
++				     GWEATHER_TYPE_LOCATION,
++				     G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
+ 
+ 	g_object_class_install_property (
+ 		object_class, PROP_SHOW_NAMED_TIMEZONES,
+@@ -230,11 +242,15 @@ e_weather_location_entry_class_init (EWeatherLocationEntryClass *location_entry_
+ 
+ 	g_object_class_install_property (
+ 		object_class, PROP_LOCATION,
++		#ifdef WITH_GWEATHER4
++		g_param_spec_object ("location",
++		#else
+ 		g_param_spec_boxed ("location",
+-				    "Location",
+-				    "The selected GWeatherLocation",
+-				    GWEATHER_TYPE_LOCATION,
+-				    G_PARAM_READWRITE));
++		#endif
++				     "Location",
++				     "The selected GWeatherLocation",
++				     GWEATHER_TYPE_LOCATION,
++				     G_PARAM_READWRITE));
+ }
+ 
+ static void
+@@ -247,14 +263,22 @@ set_property (GObject *object,
+ 
+ 	switch (prop_id) {
+ 	case PROP_TOP:
++		#ifdef WITH_GWEATHER4
++		entry->priv->top = g_value_dup_object (value);
++		#else
+ 		entry->priv->top = g_value_dup_boxed (value);
++		#endif
+ 		break;
+ 	case PROP_SHOW_NAMED_TIMEZONES:
+ 		entry->priv->show_named_timezones = g_value_get_boolean (value);
+ 		break;
+ 	case PROP_LOCATION:
+ 		e_weather_location_entry_set_location (E_WEATHER_LOCATION_ENTRY (object),
++						       #ifdef WITH_GWEATHER4
++						       g_value_get_object (value));
++						       #else
+ 						       g_value_get_boxed (value));
++						       #endif
+ 		break;
+ 	default:
+ 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+@@ -275,7 +299,11 @@ get_property (GObject *object,
+ 		g_value_set_boolean (value, entry->priv->show_named_timezones);
+ 		break;
+ 	case PROP_LOCATION:
++		#ifdef WITH_GWEATHER4
++		g_value_set_object (value, entry->priv->location);
++		#else
+ 		g_value_set_boxed (value, entry->priv->location);
++		#endif
+ 		break;
+ 	default:
+ 		G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+@@ -321,7 +349,11 @@ set_location_internal (EWeatherLocationEntry *entry,
+ 	priv = entry->priv;
+ 
+ 	if (priv->location)
++		#ifdef WITH_GWEATHER4
++		g_object_unref (priv->location);
++		#else
+ 		gweather_location_unref (priv->location);
++		#endif
+ 
+ 	g_return_if_fail (iter == NULL || loc == NULL);
+ 
+@@ -334,7 +366,11 @@ set_location_internal (EWeatherLocationEntry *entry,
+ 		priv->custom_text = FALSE;
+ 		g_free (name);
+ 	} else if (loc) {
++		#ifdef WITH_GWEATHER4
++		priv->location = g_object_ref (loc);
++		#else
+ 		priv->location = gweather_location_ref (loc);
++		#endif
+ 		gtk_entry_set_text (GTK_ENTRY (entry), gweather_location_get_name (loc));
+ 		priv->custom_text = FALSE;
+ 	} else {
+@@ -384,11 +420,19 @@ e_weather_location_entry_set_location (EWeatherLocationEntry *entry,
+ 				    -1);
+ 		if (gweather_location_equal (loc, cmploc)) {
+ 			set_location_internal (entry, model, &iter, NULL);
++			#ifdef WITH_GWEATHER4
++			g_object_unref (cmploc);
++			#else
+ 			gweather_location_unref (cmploc);
++			#endif
+ 			return;
+ 		}
+ 
++		#ifdef WITH_GWEATHER4
++		g_object_unref (cmploc);
++		#else
+ 		gweather_location_unref (cmploc);
++		#endif
+ 	} while (gtk_tree_model_iter_next (model, &iter));
+ 
+ 	set_location_internal (entry, model, NULL, loc);
+@@ -411,7 +455,11 @@ e_weather_location_entry_get_location (EWeatherLocationEntry *entry)
+ 	g_return_val_if_fail (E_WEATHER_IS_LOCATION_ENTRY (entry), NULL);
+ 
+ 	if (entry->priv->location)
++		#ifdef WITH_GWEATHER4
++		return g_object_ref (entry->priv->location);
++		#else
+ 		return gweather_location_ref (entry->priv->location);
++		#endif
+ 	else
+ 		return NULL;
+ }
+@@ -474,14 +522,22 @@ e_weather_location_entry_set_city (EWeatherLocationEntry *entry,
+ 
+ 		cmpcode = gweather_location_get_code (cmploc);
+ 		if (!cmpcode || strcmp (cmpcode, code) != 0) {
++			#ifdef WITH_GWEATHER4
++			g_object_unref (cmploc);
++			#else
+ 			gweather_location_unref (cmploc);
++			#endif
+ 			continue;
+ 		}
+ 
+ 		if (city_name) {
+ 			cmpname = gweather_location_get_city_name (cmploc);
+ 			if (!cmpname || strcmp (cmpname, city_name) != 0) {
++				#ifdef WITH_GWEATHER4
++				g_object_unref (cmploc);
++				#else
+ 				gweather_location_unref (cmploc);
++				#endif
+ 				g_free (cmpname);
+ 				continue;
+ 			}
+@@ -489,7 +545,11 @@ e_weather_location_entry_set_city (EWeatherLocationEntry *entry,
+ 		}
+ 
+ 		set_location_internal (entry, model, &iter, NULL);
++		#ifdef WITH_GWEATHER4
++		g_object_unref (cmploc);
++		#else
+ 		gweather_location_unref (cmploc);
++		#endif
+ 		return TRUE;
+ 	} while (gtk_tree_model_iter_next (model, &iter));
+ 
+@@ -611,7 +671,11 @@ fill_location_entry_model (GtkListStore *store,
+ 		break;
+ 	}
+ 
++	#ifdef WITH_GWEATHER4
++	g_clear_object (&child);
++	#else
+ 	g_clear_pointer (&child, gweather_location_unref);
++	#endif
+ }
+ 
+ static gchar *
+diff --git a/src/modules/cal-config-weather/evolution-cal-config-weather.c b/src/modules/cal-config-weather/evolution-cal-config-weather.c
+index 423d6e2357..454cde5e05 100644
+--- a/src/modules/cal-config-weather/evolution-cal-config-weather.c
++++ b/src/modules/cal-config-weather/evolution-cal-config-weather.c
+@@ -72,10 +72,18 @@ cal_config_weather_location_to_string (GBinding *binding,
+ 	GWeatherLocation *location;
+ 	gchar *string = NULL;
+ 
++	#ifdef WITH_GWEATHER4
++	location = g_value_get_object (source_value);
++	#else
+ 	location = g_value_get_boxed (source_value);
++	#endif
+ 	#if GWEATHER_CHECK_VERSION(3, 39, 0)
+ 	if (location)
++		#ifdef WITH_GWEATHER4
++		g_object_ref (location);
++		#else
+ 		gweather_location_ref (location);
++		#endif
+ 	#endif
+ 
+ 	while (location && !gweather_location_has_coords (location)) {
+@@ -83,7 +91,11 @@ cal_config_weather_location_to_string (GBinding *binding,
+ 		GWeatherLocation *child = location;
+ 
+ 		location = gweather_location_get_parent (child);
++		#ifdef WITH_GWEATHER4
++		g_object_unref (child);
++		#else
+ 		gweather_location_unref (child);
++		#endif
+ 		#else
+ 		location = gweather_location_get_parent (location);
+ 		#endif
+@@ -101,7 +113,9 @@ cal_config_weather_location_to_string (GBinding *binding,
+ 
+ 		string = g_strdup_printf ("%s/%s", lat_str, lon_str);
+ 
+-		#if GWEATHER_CHECK_VERSION(3, 39, 0)
++		#ifdef WITH_GWEATHER4
++		g_object_unref (location);
++		#elif GWEATHER_CHECK_VERSION(3, 39, 0)
+ 		gweather_location_unref (location);
+ 		#endif
+ 	}
+@@ -134,7 +148,11 @@ cal_config_weather_find_location_by_coords (GWeatherLocation *start,
+ 		gweather_location_get_coords (location, &lat, &lon);
+ 
+ 		if (lat == latitude && lon == longitude) {
++			#ifdef WITH_GWEATHER4
++			g_object_ref (location);
++			#else
+ 			gweather_location_ref (location);
++			#endif
+ 			return location;
+ 		}
+ 	}
+@@ -145,7 +163,11 @@ cal_config_weather_find_location_by_coords (GWeatherLocation *start,
+ 
+ 		result = cal_config_weather_find_location_by_coords (child, latitude, longitude);
+ 		if (result) {
++			#ifdef WITH_GWEATHER4
++			g_object_unref (child);
++			#else
+ 			gweather_location_unref (child);
++			#endif
+ 			return result;
+ 		}
+ 	}
+@@ -154,7 +176,11 @@ cal_config_weather_find_location_by_coords (GWeatherLocation *start,
+ 	for (ii = 0; children[ii]; ii++) {
+ 		location = cal_config_weather_find_location_by_coords (children[ii], latitude, longitude);
+ 		if (location) {
++			#ifdef WITH_GWEATHER4
++			g_object_ref (location);
++			#else
+ 			gweather_location_ref (location);
++			#endif
+ 			return location;
+ 		}
+ 	}
+@@ -194,7 +220,11 @@ cal_config_weather_string_to_location (GBinding *binding,
+ 
+ 	match = cal_config_weather_find_location_by_coords (world, latitude, longitude);
+ 
++	#ifdef WITH_GWEATHER4
++	g_value_take_object (target_value, match);
++	#else
+ 	g_value_take_boxed (target_value, match);
++	#endif
+ 
+ 	g_strfreev (tokens);
+ 
+@@ -320,8 +350,13 @@ cal_config_weather_insert_widgets (ESourceConfigBackend *backend,
+ 		G_BINDING_SYNC_CREATE,
+ 		cal_config_weather_string_to_location,
+ 		cal_config_weather_location_to_string,
++		#ifdef WITH_GWEATHER4
++		g_object_ref (world),
++		g_object_unref);
++		#else
+ 		gweather_location_ref (world),
+ 		(GDestroyNotify) gweather_location_unref);
++		#endif
+ 
+ 	e_binding_bind_property (
+ 		extension, "units",
+@@ -329,7 +364,9 @@ cal_config_weather_insert_widgets (ESourceConfigBackend *backend,
+ 		G_BINDING_BIDIRECTIONAL |
+ 		G_BINDING_SYNC_CREATE);
+ 
+-#if GWEATHER_CHECK_VERSION(3, 39, 0)
++#ifdef WITH_GWEATHER4
++	g_object_unref (world);
++#elif GWEATHER_CHECK_VERSION(3, 39, 0)
+ 	gweather_location_unref (world);
+ #endif
+ }
+-- 
+2.35.1
+
diff --git a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
index 677ad7c8b493..fdd0f0e292ca 100644
--- a/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
+++ b/pkgs/applications/networking/mailreaders/evolution/evolution/default.nix
@@ -1,4 +1,5 @@
-{ lib, stdenv
+{ lib
+, stdenv
 , cmake
 , ninja
 , intltool
@@ -33,6 +34,8 @@
 , nspr
 , icu
 , libcanberra-gtk3
+, geocode-glib
+, cmark
 , bogofilter
 , gst_all_1
 , procps
@@ -43,13 +46,19 @@
 
 stdenv.mkDerivation rec {
   pname = "evolution";
-  version = "3.42.4";
+  version = "3.43.2";
 
   src = fetchurl {
     url = "mirror://gnome/sources/evolution/${lib.versions.majorMinor version}/${pname}-${version}.tar.xz";
-    sha256 = "+oprem1GsinbXfIv3nZCVFIjV/4b7NexjlNt/piJCmU=";
+    sha256 = "nBAQtBOGT5fE4VB96MWaNR9LMXT3DSIiig+dXjmz3pg=";
   };
 
+  patches = [
+    # Fix build with gweather4
+    # https://gitlab.gnome.org/GNOME/evolution/-/merge_requests/102
+    ./0001-M-102-Port-to-libgweather4.patch
+  ];
+
   nativeBuildInputs = [
     cmake
     intltool
@@ -78,6 +87,8 @@ stdenv.mkDerivation rec {
     highlight
     icu
     libcanberra-gtk3
+    geocode-glib
+    cmark
     libgdata
     libgweather
     libical
@@ -107,6 +118,7 @@ stdenv.mkDerivation rec {
     "-DWITH_SA_LEARN=${spamassassin}/bin/sa-learn"
     "-DWITH_BOGOFILTER=${bogofilter}/bin/bogofilter"
     "-DWITH_OPENLDAP=${openldap}"
+    "-DWITH_GWEATHER4=ON"
   ];
 
   requiredSystemFeatures = [