Merge pull request #85161 from sternenseemann/irmin
ocamlPackages.irmin*: 2.0.0 -> 2.1.0, add ppx_irmin, ocaml-syntax-shims, index: 1.0.1 -> 1.2.0
authored by Vincent Laporte and committed by GitHub 5 years ago ef8ea1e5 1a3d41d4