Index: library/lib/make.tcl
===================================================================
diff -u -rc4ab08fdabf653b2be1e0982dd6fff6d181d9f89 -r703ade2b929b01237ca3269c763942fb63b50c57
--- library/lib/make.tcl	(.../make.tcl)	(revision c4ab08fdabf653b2be1e0982dd6fff6d181d9f89)
+++ library/lib/make.tcl	(.../make.tcl)	(revision 703ade2b929b01237ca3269c763942fb63b50c57)
@@ -66,9 +66,12 @@
       }
       
       set flags "-verbose -direct -load nsf"
-      if {$fls ne "nx.tcl"} {
+      # the following test is just an approximization, loading nsf +
+      # nx does not seem to work for binary extensions (e.g. mongodb)
+      if {$fls ne "nx.tcl" && ![string match "*[info sharedlibextension]" $fls]} {
 	append flags " -load nx"
       }
+      #package prefer latest
       if {$::verbose} {puts stderr "[pwd]:\n\tcall pkg_mkIndex $flags . $fls"}
       pkg_mkIndex {*}$flags . {*}$fls
       if {$::verbose} {puts stderr "[pwd] done"}