another issue with an old merge: missing nums dep

src/_tags

@@ -6,6 +6,7 @@
 "main_lustre_compiler.native": package(ocamlgraph)
 "main_lustre_compiler.native": use_str
 "main_lustre_compiler.native": use_unix
+"main_lustre_compiler.native": use_nums
 <*.ml{,i}>: package(ocamlgraph)
 <*.ml{,i}>: use_str
 <*.ml{,i}>: use_unix