package mfetch

mfetch, a tool to fetch and lock dependencies of OCaml projects

mfetch is a simple programme that allows you to download the source code for the dependencies listed in an _mfetch file, based on the version available under the current OPAM switch. You can ‘lock’ dependencies and ensure the reproducibility of your programme using orb. mfetch is a lighter version of opam-monorepo and leaves dependency resolution (which also involves version constraints) to OPAM.

This project forms part of the new workflow for developing unikernels and enables the vendoring of dependencies containing C files that must be compiled with the Solo5 toolchain.

Example

Let's take the immuable project as an example, a simple HTTP server implemented as a unikernel.

$ git clone https://github.com/dinosaure/immuable
$ cd immuable
$ unic . > _mfetch
$ mfetch
$ mfetch lock
$ orb build