Re: [Caml-list] Library installation procedure (for use with OPAM)?

[Sebastien Mondet <sebastien.mondet@gmail.com>]

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On Mon, Dec 9, 2013 at 10:04 AM, Daniel Bünzli
<daniel.buenzli@erratique.ch>wrote:

> Le dimanche, 8 décembre 2013 à 21:55, Anthony Tavener a écrit :
> > Is there a simple example of an appropriate install process suitable for
> use with OPAM? I've tried looking at a few existing packages and the
> build+install process, as usual, is convoluted... not as obscure as
> autotools, but different for each project. Is findlib still applicable? Or
> some other means to query the system install directory?
>
>
> For my packages I now generate an opam .install file at the root of the
> distribution. This .install file indicates the type of build artefacts you
> generated and where they are located. This lets opam figure out where it
> should put that. The advantage over using `findlib install` is that it also
> support installing binaries, man pages, documentation, configuration files,
> etc. Note that you still want your users to be able to use findlib for
> using your package so be sure to also install a META file (no need to use
> `findlib install` for that).
>
>

hi

Opam's .install files should be used only to fix packages whose
installation is already broken or unsufficient, shouldn't it?

If you rely *only* on the .install, your package can be installed only with
opam, it will break for other users (GODI, WODI, Manual Package
Management™, etc.).
I think it's good hygiene to at least provide an ocamlfind-based
installation of the libraries.


Cheers
Seb






> At the moment for achieving this I use a very simple build script [2] that
> allows you to describe what you want (see [3]), builds what you describe
> with ocamlbuild and generates a corresponding .install file. The resulting
> opam file for this example is here [4] (the pkg-git invocation is for
> massaging the checkout when you pin the package).
>
> Best,
>
> Daniel
>
> [1] See section 2.2.3 in
> https://github.com/OCamlPro/opam/raw/master/doc/dev-manual/dev-manual.pdf
> [2] https://github.com/dbuenzli/xmlm/blob/master/pkg/pkg-builder
> [3] https://github.com/dbuenzli/xmlm/blob/master/pkg/build
> [4] https://github.com/dbuenzli/xmlm/blob/master/opam
>
>
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