ocaml-scripts

While the first section is still mostly true, see the edit for full explanation.* OPAM packages such as the commonly-used crypto/hashing library, , will not generate appropriate rules as it is a virtual library which links in either a C- or OCaml-based implementation. Dependent rules will only depend on and not or , so compilation will fail. conf- packages in OPAM are virtual packages which become available if the corresponding library is present on the host (e.g. conf-sqlite3). But it's not clear how to make these rules work with libraries installed on the host system as everything is relative to the root passed to dromedary.py. EDIT: I did a little more exploration into the Digestif case. It uses what they call a "link trick" to allow the package to offer the interface, while the or packages offer the implementation. This only works if the implementation package appears before** on the compile line. However, in the META files, depends on (not the other way around), and Buck decides to link first, as it is a dependency of those which come later. This breaks the build. A fix is to invert the dependency and make depend on . This seems to work, but I'm not sure there is a trivial way to fix this in the generation scripts.