unikernel/duniverse/dune_/test/blackbox-tests/test-cases/melange/gh7020.t

@@ -0,0 +1,56 @@
+Reproduce github #7020
+
+  $ dir=_to-install
+  $ mkdir $dir
+  $ cat >$dir/dune-project <<EOF
+  > (lang dune 3.8)
+  > (using melange 0.1)
+  > (package
+  >  (name dummyfoo))
+  > EOF
+
+  $ cat >$dir/dune <<EOF
+  > (library
+  >  (modes melange)
+  >  (public_name dummyfoo))
+  > EOF
+
+  $ cat >$dir/META.dummyfoo.template <<EOF
+  > # DUNE_GEN
+  > EOF
+
+  $ dune build @install --root $dir
+  Entering directory '_to-install'
+  Leaving directory '_to-install'
+  $ cd $dir
+  $ dune install --root . --prefix _install --display short
+  Installing _install/lib/dummyfoo/META
+  Installing _install/lib/dummyfoo/dummyfoo.ml
+  Installing _install/lib/dummyfoo/dune-package
+  Installing _install/lib/dummyfoo/melange/dummyfoo.cmi
+  Installing _install/lib/dummyfoo/melange/dummyfoo.cmj
+  Installing _install/lib/dummyfoo/melange/dummyfoo.cmt
+  $ cd ..
+
+  $ export OCAMLPATH=$PWD/$dir/_install/lib
+
+  $ cat >dune-project <<EOF
+  > (lang dune 3.8)
+  > (using melange 0.1)
+  > EOF
+
+  $ cat >dune <<EOF
+  > (melange.emit
+  >  (target es6)
+  >  (alias mel)
+  >  (libraries dummyfoo)
+  >  (emit_stdlib false)
+  >  (module_systems es6))
+  > EOF
+
+  $ dune build @mel
+  Error: The library dummyfoo was not compiled with Dune or it was compiled
+  with Dune but published with a META template. Such libraries are not
+  compatible with melange support
+  -> required by alias mel
+  [1]