diff --git a/test/blackbox-tests/test-cases/meta-file/dune b/test/blackbox-tests/test-cases/meta-file/dune
new file mode 100644
index 00000000000..d04b070702e
--- /dev/null
+++ b/test/blackbox-tests/test-cases/meta-file/dune
@@ -0,0 +1,3 @@
+(cram
+ (applies_to :whole_subtree)
+ (deps %{bin:ocamlfind}))
diff --git a/test/blackbox-tests/test-cases/meta-file/findlib-compatibility.t b/test/blackbox-tests/test-cases/meta-file/findlib-compatibility.t
new file mode 100644
index 00000000000..853b23d0131
--- /dev/null
+++ b/test/blackbox-tests/test-cases/meta-file/findlib-compatibility.t
@@ -0,0 +1,115 @@
+Dune currently accepts META file templates that findlib rejects. Each case
+builds and installs before findlib reports the incompatible construct.
+
+  $ setup_project () {
+  >   name="$1"
+  >   mkdir "$name"
+  >   cat >"$name/dune-project" <<EOF
+  > (lang dune 2.7)
+  > (package (name $name))
+  > EOF
+  >   cat >"$name/dune" <<EOF
+  > (library (public_name $name))
+  > EOF
+  >   echo 'let value = ()' >"$name/$name.ml"
+  > }
+
+Unknown escapes are not part of findlib's quoted-string syntax.
+
+  $ setup_project unknown_escape
+  $ cat >unknown_escape/META.unknown_escape.template <<'EOF'
+  > description = "unknown\qescape"
+  > # DUNE_GEN
+  > EOF
+  $ (cd unknown_escape && dune build @install)
+  $ ocamlfind lint unknown_escape/_build/default/META.unknown_escape
+  ocamlfind: Cannot parse 'unknown_escape/_build/default/META.unknown_escape': Error in 'name = value' clause at line 1 position 0
+  [2]
+
+Predicate lists must be non-empty and may not end with a comma.
+
+  $ setup_project empty_predicates
+  $ cat >empty_predicates/META.empty_predicates.template <<'EOF'
+  > description() = "empty"
+  > # DUNE_GEN
+  > EOF
+  $ (cd empty_predicates && dune build @install)
+  $ ocamlfind lint empty_predicates/_build/default/META.empty_predicates
+  ocamlfind: Cannot parse 'empty_predicates/_build/default/META.empty_predicates': Error in 'name = value' clause at line 1 position 0
+  [2]
+
+  $ setup_project trailing_comma
+  $ cat >trailing_comma/META.trailing_comma.template <<'EOF'
+  > description(foo,) = "trailing"
+  > # DUNE_GEN
+  > EOF
+  $ (cd trailing_comma && dune build @install)
+  $ ocamlfind lint trailing_comma/_build/default/META.trailing_comma
+  ocamlfind: Cannot parse 'trailing_comma/_build/default/META.trailing_comma': Error in 'name = value' clause at line 1 position 0
+  [2]
+
+Findlib rejects duplicate base definitions after normalizing their predicates.
+
+  $ setup_project duplicate_definition
+  $ cat >duplicate_definition/META.duplicate_definition.template <<'EOF'
+  > description(foo,bar) = "first"
+  > description(bar,foo,foo) = "second"
+  > # DUNE_GEN
+  > EOF
+  $ (cd duplicate_definition && dune build @install)
+  $ ocamlfind lint duplicate_definition/_build/default/META.duplicate_definition
+  ocamlfind: Cannot parse 'duplicate_definition/_build/default/META.duplicate_definition': Double definition of 'description(bar,foo)'
+  [2]
+
+Rendering can introduce a duplicate base definition into a source template that
+is valid on its own.
+
+  $ setup_project rendered_duplicate
+  $ cat >rendered_duplicate/dune <<'EOF'
+  > (library
+  >  (public_name rendered_duplicate)
+  >  (synopsis "generated"))
+  > EOF
+  $ cat >rendered_duplicate/META.rendered_duplicate.template <<'EOF'
+  > description = "template"
+  > # DUNE_GEN
+  > EOF
+  $ (cd rendered_duplicate && dune build @install)
+  $ ocamlfind lint rendered_duplicate/_build/default/META.rendered_duplicate
+  ocamlfind: Cannot parse 'rendered_duplicate/_build/default/META.rendered_duplicate': Double definition of 'description'
+  [2]
+
+Sibling subpackages must have distinct names.
+
+  $ setup_project duplicate_package
+  $ cat >duplicate_package/META.duplicate_package.template <<'EOF'
+  > package "dup" (
+  >  description = "first"
+  > )
+  > package "dup" (
+  >  description = "second"
+  > )
+  > # DUNE_GEN
+  > EOF
+  $ (cd duplicate_package && dune build @install)
+  $ ocamlfind lint duplicate_package/_build/default/META.duplicate_package
+  ocamlfind: Cannot parse 'duplicate_package/_build/default/META.duplicate_package': Double definition for subpackage dup
+  [2]
+
+The compatible forms remain accepted by both parsers.
+
+  $ setup_project compatible
+  $ cat >compatible/META.compatible.template <<'EOF'
+  > custom(foo) = "first"
+  > custom(bar) = "second"
+  > custom(foo,foo,bar) += "third"
+  > custom(foo,foo,bar) += "fourth"
+  > quoted = "quote: \"; slash: \\"
+  > package "left" (package "same" (custom = "left"))
+  > package "right" (package "same" (custom = "right"))
+  > # DUNE_GEN
+  > EOF
+  $ (cd compatible && dune build @install)
+  $ OCAMLPATH=$PWD/compatible/_build/install/default/lib OCAMLFIND_LDCONF=ignore \
+  > ocamlfind query compatible
+  $TESTCASE_ROOT/compatible/_build/install/default/lib/compatible