This package requires CMAKE_MODULE_PATH be set by the calling process. This
patch uses the CMAKE_PREFIX_PATH passed from Guix as the search path for
locating the bloomberg-bde-tools CMake modules.

--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -14,6 +14,7 @@ else()
     if (NOT CMAKE_MODULE_PATH)
         message(FATAL "Please specify path to BDE cmake modules.")
     endif()
+    string(REPLACE ":" "cmake/;" CMAKE_MODULE_PATH "$ENV{CMAKE_PREFIX_PATH}cmake/")
 
     include(bde_workspace)
 
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