@FlorentBecker, thanks for your PR! By analyzing the history of the files in this pull request, we identified @vbgl, @ericbmerritt and @7c6f434c to be potential reviewers.

The two attributes ocsigen_server and ocsigen_server_pgocaml have the same value (in the second, you explicitly set the pgocaml parameter to its default value). If you really want a version of ocsigenserver build without PostgreSQL support, then you may add a call with { pgocaml = null; }. An other possibility is to add a boolean argument, say pgSupport, that defaults to false, and that is set to true in the ocsigen_server_pgocaml attribute.

Please do not introduce arbitrary mismatches between package name, attribute name, directory name, etc. For instance, you should use ocsigen-toolkit everywhere (with a dash).

Is ocsigen-i18n an OCaml library? If not, then createFindlibDestdir should be false. Otherwise, something is wrong in the build since nothing is installed in that directory.

buildOCaml sets the meta.platforms for you: no need to override it.

Cherry-picked the first commits as e3a77dd, 9fd4966, and bc26feb.

I think the packages for ocsigen-start and ocsigen-i18n are not yet ready.

Do you mean the software or the packaging?

I’m talking about the packaging.

About ocsigen-start, there should be a convenient way to tell eliom-distillery where the template is.

$ eliom-distillery -template os.pgocaml
eliom-distillery: Not a known template name: "os.pgocaml".

About ocsigen-i18n, is it a library? does it belong to ocaml-packages.nix?

Merged in ac87d9b, 0910738, and e4d3974. Thanks.