-let stdlib_dir_devel = runtime_base_dir ^ "/library"
-let new_stdlib_dir_devel = runtime_base_dir ^ "/nlibrary"
-let stdlib_dir_installed = runtime_base_dir ^ "/ma/standard-library"
-let new_stdlib_dir_installed = runtime_base_dir ^ "/ma/new-standard-library"
+let new_stdlib_dir_devel = runtime_base_dir ^ "/lib"
+(* CSC: no installed standard library
+let new_stdlib_dir_installed = runtime_base_dir ^ "/ma/new-standard-library" *)