diff --git a/src/kokkos/model.cmake b/src/kokkos/model.cmake
index 445991d..a95fdba 100644
--- a/src/kokkos/model.cmake
+++ b/src/kokkos/model.cmake
@@ -1,16 +1,17 @@
-
 register_flag_optional(CMAKE_CXX_COMPILER
         "Any CXX compiler that is supported by CMake detection and RAJA.
          See https://github.com/kokkos/kokkos#primary-tested-compilers-on-x86-are"
         "c++")
 
-register_flag_required(KOKKOS_IN_TREE
+register_flag_optional(KOKKOS_IN_TREE
         "Absolute path to the *source* distribution directory of Kokkos.
          Remember to append Kokkos specific flags as well, for example:
-
              -DKOKKOS_IN_TREE=... -DKokkos_ENABLE_OPENMP=ON -DKokkos_ARCH_ZEN=ON ...
+         See https://github.com/kokkos/kokkos/blob/master/BUILD.md for all available options" "")
 
-         See https://github.com/kokkos/kokkos/blob/master/BUILD.md for all available options")
+register_flag_optional(KOKKOS_IN_PACKAGE
+        "Use if Kokkos is part of a package dependency: 
+        Path to package R-Path containing Kokkos libs" "")
 
 # compiler vendor and arch specific flags
 set(KOKKOS_FLAGS_CPU_INTEL -qopt-streaming-stores=always)
@@ -20,13 +21,18 @@ macro(setup)
     set(CMAKE_CXX_STANDARD 14)
     cmake_policy(SET CMP0074 NEW) #see https://github.com/kokkos/kokkos/blob/master/BUILD.md
 
-    message(STATUS "Building using in-tree Kokkos source at `${KOKKOS_IN_TREE}`")
 
     if (EXISTS "${KOKKOS_IN_TREE}")
+        message(STATUS "Building using in-tree Kokkos source at `${KOKKOS_IN_TREE}`")
         add_subdirectory(${KOKKOS_IN_TREE} ${CMAKE_BINARY_DIR}/kokkos)
         register_link_library(Kokkos::kokkos)
-    else ()
-        message(FATAL_ERROR "`${KOKKOS_IN_TREE}` does not exist")
+    elseif (EXISTS "${KOKKOS_IN_PACKAGE}")
+        message(STATUS "Building using packaged Kokkos at `${KOKKOS_IN_PACKAGE}`")
+        set (Kokkos_DIR "${KOKKOS_IN_PACKAGE}/lib64/cmake/Kokkos")
+        find_package(Kokkos REQUIRED)
+        register_link_library(Kokkos::kokkos) 
+    else()
+        message(FATAL_ERROR "Neither `${KOKKOS_IN_TREE}`, or `${KOKKOS_IN_PACKAGE}` exists")
     endif ()
 
     register_append_compiler_and_arch_specific_cxx_flags(
@@ -36,5 +42,3 @@ macro(setup)
     )
 
 endmacro()
-
-