diff --git a/pkgs/applications/graphics/digikam/default.nix b/pkgs/applications/graphics/digikam/default.nix
index 1d9b06de29f..e6e24e0e56f 100644
--- a/pkgs/applications/graphics/digikam/default.nix
+++ b/pkgs/applications/graphics/digikam/default.nix
@@ -9,7 +9,7 @@
 , qtwebengine
 
 , akonadi-contacts
-, kcalcore
+, kcalendarcore
 , kconfigwidgets
 , kcoreaddons
 , kdoctools
@@ -89,7 +89,7 @@ mkDerivation rec {
     qtwebengine
 
     akonadi-contacts
-    kcalcore
+    kcalendarcore
     kconfigwidgets
     kcoreaddons
     kfilemetadata
diff --git a/pkgs/applications/kde/akonadi-calendar.nix b/pkgs/applications/kde/akonadi-calendar.nix
index ce6b6f75f93..121e93d3f5c 100644
--- a/pkgs/applications/kde/akonadi-calendar.nix
+++ b/pkgs/applications/kde/akonadi-calendar.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  akonadi, akonadi-contacts, kcalcore, kcalutils, kcontacts,
+  akonadi, akonadi-contacts, kcalendarcore, kcalutils, kcontacts,
   kidentitymanagement, kio, kmailtransport,
 }:
 
@@ -13,7 +13,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   propagatedBuildInputs = [
-    akonadi akonadi-contacts kcalcore kcalutils kcontacts kidentitymanagement
+    akonadi akonadi-contacts kcalendarcore kcalutils kcontacts kidentitymanagement
     kio kmailtransport
   ];
   outputs = [ "out" "dev" ];
diff --git a/pkgs/applications/kde/akonadi-search.nix b/pkgs/applications/kde/akonadi-search.nix
index 617c086ad9c..23ee6b1b9cc 100644
--- a/pkgs/applications/kde/akonadi-search.nix
+++ b/pkgs/applications/kde/akonadi-search.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  akonadi, akonadi-mime, kcalcore, kcmutils, kcontacts, kcoreaddons, kmime,
+  akonadi, akonadi-mime, kcalendarcore, kcmutils, kcontacts, kcoreaddons, kmime,
   krunner, qtbase, xapian
 }:
 
@@ -14,7 +14,7 @@ mkDerivation {
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   buildInputs = [ kcmutils krunner xapian ];
   propagatedBuildInputs = [
-    akonadi akonadi-mime kcalcore kcontacts kcoreaddons kmime qtbase
+    akonadi akonadi-mime kcalendarcore kcontacts kcoreaddons kmime qtbase
   ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/applications/kde/akonadiconsole.nix b/pkgs/applications/kde/akonadiconsole.nix
index 1470406d5a4..a02400847bb 100644
--- a/pkgs/applications/kde/akonadiconsole.nix
+++ b/pkgs/applications/kde/akonadiconsole.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  akonadi, akonadi-contacts, calendarsupport, kcalcore, kcompletion,
+  akonadi, akonadi-contacts, calendarsupport, kcalendarcore, kcompletion,
   kconfigwidgets, kcontacts, kdbusaddons, kitemmodels, kpimtextedit, libkdepim,
   ktextwidgets, kxmlgui, messagelib, qtbase, akonadi-search, xapian
 }:
@@ -14,7 +14,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   buildInputs = [
-    akonadi akonadi-contacts calendarsupport kcalcore kcompletion kconfigwidgets
+    akonadi akonadi-contacts calendarsupport kcalendarcore kcompletion kconfigwidgets
     kcontacts kdbusaddons kitemmodels kpimtextedit ktextwidgets kxmlgui
     messagelib qtbase libkdepim akonadi-search xapian
   ];
diff --git a/pkgs/applications/kde/kalarm.nix b/pkgs/applications/kde/kalarm.nix
index 9978e7ff667..a1dec1179cc 100644
--- a/pkgs/applications/kde/kalarm.nix
+++ b/pkgs/applications/kde/kalarm.nix
@@ -6,7 +6,7 @@
   kguiaddons, ki18n, kiconthemes, kjobwidgets, kcmutils, kdelibs4support, kio,
   knotifications, kservice, kwidgetsaddons, kwindowsystem, kxmlgui, phonon,
 
-  kimap, akonadi, akonadi-contacts, akonadi-mime, kalarmcal, kcalcore, kcalutils,
+  kimap, akonadi, akonadi-contacts, akonadi-mime, kalarmcal, kcalendarcore, kcalutils,
   kholidays, kidentitymanagement, libkdepim, mailcommon, kmailtransport, kmime,
   pimcommon, kpimtextedit, kdepim-apps-libs, messagelib,
 
@@ -27,7 +27,7 @@ mkDerivation {
     kguiaddons ki18n kiconthemes kjobwidgets kcmutils kdelibs4support kio
     knotifications kservice kwidgetsaddons kwindowsystem kxmlgui phonon
 
-    kimap akonadi akonadi-contacts akonadi-mime kalarmcal kcalcore kcalutils
+    kimap akonadi akonadi-contacts akonadi-mime kalarmcal kcalendarcore kcalutils
     kholidays kidentitymanagement libkdepim mailcommon kmailtransport kmime
     pimcommon kpimtextedit kdepim-apps-libs messagelib
 
diff --git a/pkgs/applications/kde/kalarmcal.nix b/pkgs/applications/kde/kalarmcal.nix
index 46832477cc6..356c1e4812d 100644
--- a/pkgs/applications/kde/kalarmcal.nix
+++ b/pkgs/applications/kde/kalarmcal.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  akonadi, kcalcore, kdelibs4support, kholidays, kidentitymanagement,
+  akonadi, kcalendarcore, kdelibs4support, kholidays, kidentitymanagement,
   kpimtextedit, kcalutils
 }:
 
@@ -13,7 +13,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   propagatedBuildInputs = [
-    akonadi kcalcore kdelibs4support kholidays kidentitymanagement kpimtextedit kcalutils
+    akonadi kcalendarcore kdelibs4support kholidays kidentitymanagement kpimtextedit kcalutils
   ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/applications/kde/kcalutils.nix b/pkgs/applications/kde/kcalutils.nix
index 1628af7e220..2e389ec4ac7 100644
--- a/pkgs/applications/kde/kcalutils.nix
+++ b/pkgs/applications/kde/kcalutils.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  grantlee, kcalcore, kconfig, kontactinterface, kcoreaddons, kdelibs4support,
+  grantlee, kcalendarcore, kconfig, kontactinterface, kcoreaddons, kdelibs4support,
   kidentitymanagement, kpimtextedit,
 }:
 
@@ -13,7 +13,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   buildInputs = [
-    grantlee kcalcore kconfig kontactinterface kcoreaddons kdelibs4support
+    grantlee kcalendarcore kconfig kontactinterface kcoreaddons kdelibs4support
     kidentitymanagement kpimtextedit
   ];
   outputs = [ "out" "dev" ];
diff --git a/pkgs/applications/kde/kdepim-addons.nix b/pkgs/applications/kde/kdepim-addons.nix
index 0fe33ea017d..e47aae89e60 100644
--- a/pkgs/applications/kde/kdepim-addons.nix
+++ b/pkgs/applications/kde/kdepim-addons.nix
@@ -2,7 +2,7 @@
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, shared-mime-info,
   akonadi-import-wizard, akonadi-notes, calendarsupport, eventviews,
-  incidenceeditor, kcalcore, kcalutils, kconfig, kdbusaddons, kdeclarative,
+  incidenceeditor, kcalendarcore, kcalutils, kconfig, kdbusaddons, kdeclarative,
   kdepim-apps-libs, kholidays, ki18n, kmime, ktexteditor, ktnef, libgravatar,
   libksieve, mailcommon, mailimporter, messagelib, poppler, prison, kpkpass,
   kitinerary, kontactinterface
@@ -17,7 +17,7 @@ mkDerivation {
   nativeBuildInputs = [ extra-cmake-modules shared-mime-info ];
   buildInputs = [
     akonadi-import-wizard akonadi-notes calendarsupport eventviews
-    incidenceeditor kcalcore kcalutils kconfig kdbusaddons kdeclarative
+    incidenceeditor kcalendarcore kcalutils kconfig kdbusaddons kdeclarative
     kdepim-apps-libs kholidays ki18n kmime ktexteditor ktnef libgravatar
     libksieve mailcommon mailimporter messagelib poppler prison kpkpass
     kitinerary kontactinterface
diff --git a/pkgs/applications/kde/kitinerary.nix b/pkgs/applications/kde/kitinerary.nix
index 8112460549b..ce66de251dc 100644
--- a/pkgs/applications/kde/kitinerary.nix
+++ b/pkgs/applications/kde/kitinerary.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, extra-cmake-modules
 , qtbase, qtdeclarative, ki18n, kmime, kpkpass
-, poppler, kcontacts, kcalcore
+, poppler, kcontacts, kcalendarcore
 }:
 
 mkDerivation {
@@ -13,7 +13,7 @@ mkDerivation {
   nativeBuildInputs = [ extra-cmake-modules ];
   buildInputs = [
     qtbase qtdeclarative ki18n kmime kpkpass poppler
-    kcontacts kcalcore
+    kcontacts kcalendarcore
   ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/applications/kde/kmailtransport.nix b/pkgs/applications/kde/kmailtransport.nix
index 703f62aa72c..d5832db570c 100644
--- a/pkgs/applications/kde/kmailtransport.nix
+++ b/pkgs/applications/kde/kmailtransport.nix
@@ -3,7 +3,7 @@
   extra-cmake-modules, kdoctools,
   akonadi, akonadi-mime, cyrus_sasl, kcmutils,
   ki18n, kio, kmime, kwallet, ksmtp, libkgapi,
-  kcalcore, kcontacts
+  kcalendarcore, kcontacts
 }:
 
 mkDerivation {
@@ -13,7 +13,7 @@ mkDerivation {
     maintainers = kdepimTeam;
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
-  buildInputs = [ akonadi kcmutils ki18n kio ksmtp libkgapi kcalcore kcontacts ];
+  buildInputs = [ akonadi kcmutils ki18n kio ksmtp libkgapi kcalendarcore kcontacts ];
   propagatedBuildInputs = [ akonadi-mime cyrus_sasl kmime kwallet ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/applications/kde/knotes.nix b/pkgs/applications/kde/knotes.nix
index ced046c2f4e..2dc2f48c149 100644
--- a/pkgs/applications/kde/knotes.nix
+++ b/pkgs/applications/kde/knotes.nix
@@ -9,7 +9,7 @@
   grantlee, grantleetheme, qtx11extras,
   akonadi, akonadi-notes, akonadi-search, kcalutils,
   kontactinterface, libkdepim, kmime, pimcommon, kpimtextedit,
-  kcalcore
+  kcalendarcore
 }:
 
 mkDerivation {
@@ -24,6 +24,6 @@ mkDerivation {
     akonadi akonadi-notes kcalutils kontactinterface
     libkdepim kmime pimcommon kpimtextedit
     akonadi-search
-    kcalcore
+    kcalendarcore
   ];
 }
diff --git a/pkgs/applications/kde/ktnef.nix b/pkgs/applications/kde/ktnef.nix
index b5a3834869d..61f8672e47d 100644
--- a/pkgs/applications/kde/ktnef.nix
+++ b/pkgs/applications/kde/ktnef.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  kcalcore, kcalutils, kcontacts, kdelibs4support
+  kcalendarcore, kcalutils, kcontacts, kdelibs4support
 }:
 
 mkDerivation {
@@ -12,7 +12,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   propagatedBuildInputs = [
-    kcalcore kcalutils kcontacts kdelibs4support
+    kcalendarcore kcalutils kcontacts kdelibs4support
   ];
   outputs = [ "out" "dev" ];
 }
diff --git a/pkgs/applications/kde/libkgapi.nix b/pkgs/applications/kde/libkgapi.nix
index 998e65f2834..9d2d41c41d7 100644
--- a/pkgs/applications/kde/libkgapi.nix
+++ b/pkgs/applications/kde/libkgapi.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  qtwebengine, kio, kcalcore, kcontacts,
+  qtwebengine, kio, kcalendarcore, kcontacts,
   cyrus_sasl
 }:
 
@@ -12,5 +12,5 @@ mkDerivation {
     maintainers = kdepimTeam;
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
-  buildInputs = [ qtwebengine kio kcalcore kcontacts cyrus_sasl ];
+  buildInputs = [ qtwebengine kio kcalendarcore kcontacts cyrus_sasl ];
 }
diff --git a/pkgs/applications/kde/pim-data-exporter.nix b/pkgs/applications/kde/pim-data-exporter.nix
index 9f2117b41fb..82cdf19df94 100644
--- a/pkgs/applications/kde/pim-data-exporter.nix
+++ b/pkgs/applications/kde/pim-data-exporter.nix
@@ -1,7 +1,7 @@
 {
   mkDerivation, lib, kdepimTeam,
   extra-cmake-modules, kdoctools,
-  akonadi, akonadi-notes, kcalcore, kcmutils, kcrash, kdbusaddons,
+  akonadi, akonadi-notes, kcalendarcore, kcmutils, kcrash, kdbusaddons,
   kidentitymanagement, kldap, kmailtransport, knewstuff, knotifications,
   knotifyconfig, kparts, kross, ktexteditor, kwallet, libkdepim, libkleo,
   pimcommon, qttools, karchive, mailcommon, messagelib
@@ -15,7 +15,7 @@ mkDerivation {
   };
   nativeBuildInputs = [ extra-cmake-modules kdoctools ];
   buildInputs = [
-    akonadi akonadi-notes kcalcore kcmutils kcrash kdbusaddons
+    akonadi akonadi-notes kcalendarcore kcmutils kcrash kdbusaddons
     kidentitymanagement kldap kmailtransport knewstuff knotifications
     knotifyconfig kparts kross ktexteditor kwallet libkdepim libkleo pimcommon
     qttools karchive mailcommon messagelib
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index b2a5742bf05..31bfa97e1f3 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -22610,7 +22610,8 @@ in
 
   digikam = libsForQt5.callPackage ../applications/graphics/digikam {
     inherit (plasma5) oxygen;
-    inherit (kdeApplications) akonadi-contacts kcalcore;
+    inherit (kdeApplications) akonadi-contacts;
+    inherit (kdeFrameworks) kcalendarcore;
     ffmpeg = ffmpeg_4;
     opencv3 = opencv3WithoutCuda;
   };