[opam-devel] OPAM on fedora

Gabriel Scherer gabriel.scherer at gmail.com
Mon Jan 26 14:28:51 GMT 2015

Of course we won't give Fedora-specific instruction to Coq users; I hoped
to improve the common OPAM wiki/documentation with Fedora-specific
information when applicable, and just point Coq users to the general OPAM
documentation. We are preparing a Coq-specific description for newcomers
(I'll send a link to opam-devel or on the github issue where we discussed
pinning), but it won't have anything distro-specific.

Anil, thanks for the mention of your Fedora packages. I didn't know about
them -- in fact when I setup my Fedora I just looked at the default repos,
found nothing, then compiled OPAM from source (that is from the OCaml
compiler installed from the excellent Fedora packages).

On Mon, Jan 26, 2015 at 3:18 PM, Anil Madhavapeddy <anil at recoil.org> wrote:

> See below for Gabriel's message to the Fedora list.  Gabriel: thanks for
> kicking this off! I would appreciate being CCed in on this (or better,
> opam-devel if cross posting is ok), as I maintain the semi-official OPAM
> Fedora packages right now that point people to the OBS service.
> In the interests of sanity, I'd rather not have two divergent sets of
> instructions for Coq users and the general OPAM population, so if we switch
> to Copr, then the official OPAM instructions should also switch.  In the
> longer term, the packages will get into Fedora and everything will be fine,
> but don't forget that in the medium term that the Yum remotes will remain
> on people's computers for some time, and there's significant confusion in
> mixing up OBS and Copr packages.
> For Coq users right now, I think it's wiser to point them to the OPAM web
> pages which in turn point to my OBS repositories, rather than pointing them
> to Jon's.  The reason is that mine are better tested, but they also use the
> bundled OCaml packages, whereas Jon's are upstream-friendly and break out
> the OPAM dependencies.  There have been bugs from doing this in the past
> (e.g. with a libdose3 mismatch), so it's best to let this settle down
> upstream before pointing a large user base at a Copr remote that may still
> be a moving target.
> -Anil
>  *From:* Gabriel Scherer <gabriel.scherer at gmail.com>
> *Date:* 24 January 2015 11:14:39 GMT
> *To:* <jonathan.ludlam at citrix.com>, Scott Logan <logans at cottsay.net>, <
> ocaml-devel at lists.fedoraproject.org>
> *Subject:* *OPAM on fedora*
>       Hi all,
>  I would like to update the page listing the state of OPAM packaging on
> Unix distributions
>   https://github.com/ocaml/opam/wiki/Distributions
>  with information for Fedora -- which is the distribution I'm using right
> now.
>  As far as I understand:
>    - neither opam nor aspcud are currently available as Fedora packages
>    - there are separate copr repositories that work well in practice:
>     opam: https://copr.fedoraproject.org/coprs/jonludlam/opam/builds/
>     aspcud: https://copr.fedoraproject.org/coprs/cottsay/gringo/builds/
>  (In previous discussion with Scott Logan I installed aspcud (which is
> needed in practice to have a functional opam) through his packages and that
> worked well.)
>  Is it reasonable to advise end-users to install through the copr
> repositories? It seems easier than compiling from source, but the
> "Installation instructions" advise not to do this ( "Everybody else should
> avoid this repo." ). My instructions would be roughly as follows:
>    yum copr enable jonludlam/opam
>    yum copr enable cottsay/gringo
>    yum install aspcud opam
>  (OPAM is the de-facto standard package managers for OCaml libraries
> nowadays, and should also become the package manager for the Coq proof
> assistant. Coq will have a new version released in the following days/weeks
> (8.5beta1), so I'm reviewing the installation procedure.)
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