1.11
Dune supports vendoring other Dune-based projects natively, since simply copying a project into a subdirectory of your own project will work. Simply doing that has a few limitations though. You can workaround those by explicitly marking such directories as containing vendored code.
Example:
(vendored_dirs vendor)Dune will not resolve aliases in vendored directories. By default, it won't build all installable targets, run the tests, format, or lint the code located in such a directory while still building your project's dependencies. Libraries and executables in vendored directories will also be built with a -w -a flag to suppress all warnings and prevent pollution of your build output.