#ocaml on 2019-05-06 — irc logs at freenode.irclog.whitequark.org

2018-10-19 11:39 adrien changed the topic of #ocaml to: Discussions about the OCaml programming language | http://www.ocaml.org | OCaml 4.07.1 release notes: https://caml.inria.fr/pub/distrib/ocaml-4.07/notes/Changes | Try OCaml in your browser: http://try.ocamlpro.com | Public channel logs at http://irclog.whitequark.org/ocaml | Due to ongoing spam, you must register your nickname to talk on the channel

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12:46 <Netsu> can transitive dependencies be overridden in opam?

12:49 <Netsu> e.g. I have websocket-lwt in pin-depends. But it depend on websocket library ver. 2.12 (I need ver. pinned to same commit)

12:49 <Netsu> what is correct common way to resolve it?

12:50 <Netsu> I know how to do it in nix, but not in opam.

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14:05 <Netsu> Oh, just add local opam repository, I got it, sorry for the noise.

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16:22 <romildo> I need help fixing the following program:

16:23 <romildo> type t = { x: int }

16:23 <romildo> let print_t ppf a = Format.fprintf ppf "x is %i" a.x

16:23 <romildo> let s = Format.sprintf "> %a" print_t {x = 9}

16:23 <companion_cube> you want Format.asprintf

16:25 <romildo> companion_cube, thanks.

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19:54 <seastack> Hi all, can OPAM manage multiple, per-project (as opposed to a single, per-user) sets of dependencies, a la Node's npm or Erlang's rebar?

19:54 <seastack> I've been away from OCaml for a few years and am trying to rebuild an old project which depends on some older packages, but I would prefer not to change the global environment for it.

19:58 <dh_work> make a different user account for doing the hacking? path of least resistance and all

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19:58 <seastack> It looks like Esy was conceived with this in mind (https://news.ycombinator.com/item?id=18967693), but I'm still wondering if there's an OPAM way to do it

19:59 <seastack> dh_work: clever :)

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21:22 <smondet[m]> seastack: opam can do "local switches" (per-project or whatever granularity you may want): ` opam switch create . ` is that what you mean?

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