unikernel/duniverse/dune_/test/blackbox-tests/test-cases/builtin-support-override.t

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+Create a library called `findlib.dynload`
+
+  $ mkdir findlib
+  $ cat > findlib/dune-project <<EOF
+  > (lang dune 3.7)
+  > (package (name findlib))
+  > EOF
+  $ cat > findlib/dune <<EOF
+  > (library
+  >  (name findlib_dynload)
+  >  (public_name findlib.dynload)
+  >  (wrapped false)
+  >  (libraries findlib dynlink)
+  >  (modules fl_dynload)
+  >  (special_builtin_support findlib_dynload))
+  > (library
+  >  (public_name findlib)
+  >  (modules findlib))
+  > EOF
+  $ cat >findlib/findlib.ml <<EOF
+  > type x = Record_core
+  > let record_package _ _ = assert false
+  > let record_package_predicates _ _ = assert false
+  > EOF
+  $ touch findlib/fl_dynload.ml
+
+  $ cat > dune-project <<EOF
+  > (lang dune 3.7)
+  > EOF
+
+  $ mkdir lib
+  $ cat > lib/dune <<EOF
+  > (library
+  >  (name foo_dynload)
+  >  (libraries findlib.dynload))
+  > EOF
+  $ touch lib/foo_dynload.ml
+
+  $ mkdir exe
+  $ cat > exe/dune <<EOF
+  > (executable
+  >  (name the_exe)
+  >  (libraries foo_dynload))
+  > EOF
+  $ touch exe/the_exe.ml
+
+  $ dune build