Hi Antero, Thank you for your patches; I apologise for the response delay. You will find a quick review below. - Build: using your patch, both coq-iris and coq-actris can be successfully built (I only tried on a x86-64 machine with --rounds=3 at the moment). However, I have a few questions: + I do not understand why COQTOP has to be specified in the #:make-flags. + Tests indeed fail if I switch #:tests? to #t. However, when I let the main build phase run the tests, they all seem to pass. Do you experience the same result? If so, it could be worth it to (at least temporarily) allow tests in the main build phase (as is done in stdpp for example) and better understand where the issues come from. + Open question: would it be appropriate to split coq-iris across several outputs (main output for Iris, heap-lang, deprecated and unstable)? NB: I have not had the time to look at why there is a need to replace the install phase in coq-actris yet. - Licenses: the licenses are correct. - Home pages: + Iris: Ok. + Actris: you used a link to the GitLab repository. https://iris-project.org/actris/ might be more appropriate. - Description fields: Descriptions are are usually phrased as "X is ...", where "X" is the name of the project. Could you please rephrase the description in this style? Note: the Opam file of Iris reads "Iris is ..." too if you need a reference text. - Documentation: It is very nice that you build and install iris.pdf. Do you think that adding a `native-search-paths' field to `coq-iris' (for variables "GUIX_TEXMF" and "BIBINPUTS") would be interesting? This way, `tex/iris.sty' and `tex/bib.bib' (maybe renamed into iris.bib) would be made available to TeX installations? Sorry if writing my review as a list reads a bit cold (this is not my intention); I just wanted to be as organised as possible. Overall, thank you for you patches. It would be nice to see Iris-related stuff in Guix (and more generally more movement in the OCaml/Coq worlds) :). Best regards, -- Arnaud