On 19-10-2022 22:32, Vivien Kraus wrote: > Dear guile users, > > The manual, section 6.8.8, presents the eval-when form with an example: > > [...] > > If so, this is not exactly what I am looking for. I am looking for a > way to run the (date) form during the compilation phase, and save the > date to the compilation unit so that it does not change. Is this > possible? I don't know the answer, but for (bit-for-bit) reproducibility, please support something like . Greetings, Maxime.