Unknown archive: bz2

[rizo]

error: builder for '/nix/store/a9mnsmsgmqj5r6qqv5ln53a19r5waxbi-ocaml-version-3.7.1.drv' failed with exit code 1;
       last 3 log lines:
       > Running phase: unpackPhase
       > unpacking source archive /nix/store/hb6w4kd2z3ggkss8b95h95df77baf2ja-ocaml-version-3.7.1.bz2
       > do not know how to unpack source archive /nix/store/hb6w4kd2z3ggkss8b95h95df77baf2ja-ocaml-version-3.7.1.bz2
       For full logs, run 'nix log /nix/store/a9mnsmsgmqj5r6qqv5ln53a19r5waxbi-ocaml-version-3.7.1.drv'.