[opam-devel] Using the new travis containers

[Louis Gesbert]

You could use `opam depext` as a reminder:

    % opam depext hdhcp --debug     
    + uname -m
    + uname -s
    + lsb_release -i -s
    # Detecting depexts using flags: x86_64 linux debian
    + opam list --safe --recursive --external=x86_64,linux,debian --required-by=hdhcp

(the `--safe` guarantees it doesn't get any write locks or ask questions, it's typically used in competion scripts)

Otherwise, if Travis leaves more outside of the build scripts, that's a good thing, both for time and for reliability of the tests!

> - Thomas Gazagnaire, 14/05/2015 21:40 -
> > But how do I get it recursively?
> > 
> >    $ opam list -e ubuntu hdhcp --short --rec
> > 
> >    $ opam list -e ubuntu ctypes-foreign
> >    libffi-dev
> 
> This seems to do the trick:
> 
> $ opam list -e ubuntu --short --rec --required-by hdhcp 
> 
> > 
> > And ctypes-foreign is a dependency in the local hdhcp file:
> > 
> > opam-version: "1.2"
> > name: "hdhcp"
> > maintainer: "haesbaert at haesbaert.org"
> > version: "0.0.1"
> > authors: [ "Christiano F. Haesbaert" ]
> > license: "ISC"
> > homepage: "https://github.com/haesbaert/hdhcp"
> > dev-repo: "https://github.com/haesbaert/hdhcp.git"
> > bug-reports: "https://github.com/haesbaert/hdhcp/issues"
> > tags: [ "org:mirage" ]
> > build: [ "./build.sh" ]
> > install: [ ]
> > remove: [ ]
> > depends: [
> >  "base-bytes"
> >  "type_conv"
> >  "ocamlfind" {build}
> >  "cmdliner" {build & >= "0.9.4"}
> >  "cstruct" {>= "1.3.0"}
> >  "sexplib" {>= "109.53.00"}
> >  "lwt"     {>= "2.4.3"}
> >  "ipaddr"  {>= "2.5.0"}
> >  "ctypes"  {>= "0.4.0"}
> >  "ctypes-foreign"
> >  "extunix"
> >  "menhir"
> > ]
> > available: [ocaml-version >= "4.01.0"]
> > 
> > 
> > 
> > -anil
> > 
> >> 
> >> 
> >>>> 
> >>>> Shows me no depexts, so is there a new command with "opam list" or similar
> >>>> that I'm meant to use?
> >>>> 
> >>>> 
> >>>>> 
> >>>>> Notes:
> >>>>> 
> >>>>> - All debs and PPAs must be whitelisted by Travis. avsm is whitelisted already.
> >>>>> 
> >>>>> - aspcud is not whitelisted (I've requested it here:
> >>>>> https://github.com/travis-ci/travis-ci/issues/3898), which means that
> >>>>> the opam deb doesn't work reliably. Instead, my branch gets opam and
> >>>>> aspcud via 0install.
> >>>>> 
> >>>>> - There's no obvious way to specify which version of ocaml you want.
> >>>>> Perhaps Anil could add e.g. an `ocaml-4.01` with a suitable version
> >>>>> constraint?
> >>>> 
> >>>> I publish several PPAs for each combination of OPAM and OCaml:
> >>>> 
> >>>> https://launchpad.net/~avsm
> >>>> 
> >>>> Is it possible to select the right PPA repository from this list,
> >>>> or does this require individual whitelisting from Travis?
> >>> 
> >>> The entry is here:
> >>> 
> >>> https://github.com/travis-ci/apt-source-whitelist/blob/63454fd9da89fce908ab316a69defa28f34c1743/ubuntu.json#L2
> >>> 
> >>> { "alias": "avsm", "sourceline": "ppa:avsm/ppa", "key_url": null },
> >>> 
> >>> So I'm guessting it's just this one.
> >>> 
> >>> 
> >> 
> > 
> 
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