unikernel/duniverse/dune_/test/blackbox-tests/test-cases/github2499.t

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+Reproduction case for #2499: dune doesn't cleanup stale directories
+
+  $ cat >dune-project <<EOF
+  > (lang dune 2.0)
+  > EOF
+
+  $ cat >dune <<EOF
+  > (data_only_dirs data)
+  > (rule
+  >  (deps (source_tree data))
+  >  (action (with-stdout-to list (system "find data -type f | sort"))))
+  > EOF
+
+  $ mkdir -p data/a data/b; touch data/a/x data/b/x
+
+  $ dune build list
+  $ cat _build/default/list
+  data/a/x
+  data/b/x
+
+  $ rm -rf data/b
+
+  $ dune build list
+  $ cat _build/default/list
+  data/a/x