@FlorentBecker Sure. But first I need to figure out what part is failing. #Nixpkgs or #OPAM / #Findlib.

@amiloradovsky the bug seems to be in nixos: if you run eliom-distillery in a nix-shell with ocamlfind available, it does work (at least, it prints its help screen)

@FlorentBecker Actually, it doesn't:
```
$ nix-shell -p ocamlPackages.findlib
$ eliom-distillery -list-templates
Fatal error: exception Fl_package_base.No_such_package("eliom.templates", "")
```
moreover
```
$ ocaml
OCaml version 4.04.2

# #use "topfind";;
Cannot find file topfind.
```
It's something deeply wrong here… (18.03 channel)

@amiloradovsky does the ocamlfind command work with nix-shell -p ocamlPackages.findlib?

@FlorentBecker Yes.

@amiloradovsky how did you install eliom?

@FlorentBecker via `nix-env -iA nixos.ocamlPackages.eliom`. OPAM refused to install it.

@amiloradovsky can you try `nix-shell -p nixos.ocamlPackages.eliom -p nixos.ocamlPackages.findlib --run eliom-distillery` ?

@FlorentBecker
Yes, but tomorrow. I'm away from the machine now.

@FlorentBecker `nix-shell -p ocamlPackages.eliom -p ocamlPackages.findlib --run eliom-distillery` worked fine: showed the usage screen.

@FlorentBecker Actually, I could even `nix-shell -p ocamlPackages.eliom -p ocamlPackages.findlib --run 'make test.byte'`: it had built everything, but failed at starting the Server:
```
/nix/store/rnyr19wxnwckvzg4b8bsgw15gipahv68-ocsigenserver-2.8/bin/ocsigenserver not found or is not a bytecode executable file
```
Emm, yes and no: no, it does exist, and, yes, it isn't a bytecode executable file but a shell script.

@amiloradovsky this might be fixed in master (I'm not sure)

@FlorentBecker Nope:
```
$ git pull origin master
$ nix-env -f . -iA ocamlPackages.ocsigen_server
$ ocsigenserver
Fatal error: cannot load shared library dlllwt_unix_stubs
Reason: dlllwt_unix_stubs.so: cannot open shared object file: No such file or directory
```
At least the error message is different this time…

I'm going to try chances with OPAM yet a little, and complain to somewhere other than Fediverse.

@amiloradovsky
why not use OPAM?

@orbifx
It doesn't work either. Throwing at me some equally obscure error messages (#TyXML and/or #LWT couldn't be built, and the outputs don't tell much).
I'll try again today, and maybe isolate some specific issues…

#OPAM, #LWT & #TyXML are building fine in #Guix (after a non-obvious trick though), but neither #Eliom nor #Ocsigen Server are. While #Arch, as a distro, is just broken as fuck. — I believe I still have better chances with the declarative package managers…

Although the only thing I'm sure about now, is that complexity of the whole is much more than the sum of complexities of the parts…

@amiloradovsky It's not possible to install OCaml & OPAM from the Arch packages, and then the rest with OPAM?

I've played with Ocsigen a year ago, and certainly don't remember it being such a pain to install (but then, I'm on Gentoo).

@ayo
#Ocsigen is a pain to install on Nix/Guix. While Arch is just a pain per se — it is strictly less predictable than /dev/random…
Gentoo? — Hmm… it's been a long time, but maybe I should try this too.

@amiloradovsky Not like Gentoo is all that predictable. 🙄 It seems Arch has an OPAM package, so if that works, I'd think that installing Ocsigen on Arch that way shouldn't be a problem.

@ayo
I've been recommended to simply use Arch as the platform. But the Arch "release" downloaded from the site makes me troubleshoot GRUB booting… (can't boot due to an UUID issues). — I don't want to deal with *these* problems! And, from my past experience, I know there is much more.