On Thu, 01 Oct 2020 at 15:41, Julien Lepiller wrote: > * gnu/packages/ocaml.scm (ocaml-ppx-tools-versioned): Update to 5.4.0. > --- > gnu/packages/ocaml.scm | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) LGTM. However, '--check' returns: --8<---------------cut here---------------start------------->8--- guix build: error: derivation `/gnu/store/147ak35gzjzgri940dq77lwlgqw8dgqw-ocaml-ppx-tools-versioned-5.4.0.drv' may not be deterministic: output `/gnu/store/2972awnn3x72ckpkfcf40x4cn370rs8h-ocaml-ppx-tools-versioned-5.4.0' differs --8<---------------cut here---------------end--------------->8--- Could you please open a bug report once you will merge to master? All the best, simon