unikernel/duniverse/dune_/test/blackbox-tests/test-cases/generated-source-dir-overlap.t

@@ -0,0 +1,26 @@
+If a generated directory is "overlaid" by a source dir, then things break.
+
+  $ mkdir .dune
+
+  $ cat > .dune/dune <<EOF
+  > (rule
+  >  (alias foo)
+  >  (action (echo foobar)))
+  > EOF
+
+  $ cat > dune-project <<EOF
+  > (lang dune 2.2)
+  > EOF
+
+  $ cat > dune <<EOF
+  > (dirs .dune)
+  > EOF
+
+  $ dune build @foo
+  Error: Alias "foo" specified on the command line is empty.
+  It is not defined in . or any of its descendants.
+  Hint: did you mean fmt?
+  [1]
+
+The command above claims that @foo isn't defined, but it clearly is if we
+replace .dune with a normal name.