unikernel/duniverse/dune_/test/blackbox-tests/test-cases/default-implementation/package-mismatch2.t

@@ -0,0 +1,26 @@
+A default implementation of a library must belong to the same package
+
+  $ echo "(lang dune 2.6)" > dune-project
+  $ touch dummyfoo2.opam
+  $ mkdir -p vlib impl
+  $ touch vlib/vlib.mli impl/vlib.ml
+  $ cat >vlib/dune <<EOF
+  > (library
+  >  (name vlib)
+  >  (modules vlib)
+  >  (virtual_modules vlib)
+  >  (default_implementation def_i))
+  > EOF
+  $ cat >impl/dune <<EOF
+  > (library
+  >  (name def_i)
+  >  (public_name dummyfoo2.bar)
+  >  (implements vlib))
+  > EOF
+  $ dune build @install
+  File "impl/dune", line 4, characters 13-17:
+  4 |  (implements vlib))
+                   ^^^^
+  Error: Library "vlib" is private, it cannot be a dependency of a public
+  library. You need to give "vlib" a public name.
+  [1]