diff --git a/srcpkgs/darktable/patches/cmake-build-type-none.patch b/srcpkgs/darktable/patches/cmake-build-type-none.patch
new file mode 100644
index 00000000000..7101f9c1a0e
--- /dev/null
+++ b/srcpkgs/darktable/patches/cmake-build-type-none.patch
@@ -0,0 +1,14 @@
+Index: src/external/rawspeed/cmake/build-type.cmake
+===================================================================
+--- src/external/rawspeed/cmake/build-type.cmake.orig
++++ src/external/rawspeed/cmake/build-type.cmake
+@@ -27,9 +27,6 @@ string(TOUPPER "${RAWSPEED_SPECIAL_BUILD
+ 
+ # is this one of the known build types?
+ list (FIND CMAKE_CONFIGURATION_TYPES_UPPERCASE ${CMAKE_BUILD_TYPE_UPPERCASE} BUILD_TYPE_IS_KNOWN)
+-if (${BUILD_TYPE_IS_KNOWN} EQUAL -1)
+- message(SEND_ERROR "Unknown build type: ${CMAKE_BUILD_TYPE_UPPERCASE}. Please specify one of: ${CMAKE_CONFIGURATION_TYPES}")
+-endif()
+ 
+ # is this a special build?
+ list (FIND RAWSPEED_SPECIAL_BUILD_TYPES_UPPERCASE ${CMAKE_BUILD_TYPE_UPPERCASE} IS_SPECIAL_BUILD)