[opam-devel] [MirageOS-devel] opam 1.1.1 and aspcud 1.9

Anil Madhavapeddy anil at recoil.org
Fri Dec 12 15:32:54 GMT 2014 

Excellent detective work all around -- thanks for helping to pin this down,
Louis and Roberto.  Ideally Ubuntu will just upgrade to OPAM 1.2 rather than
just fix Dose

Louis -- can we do anything in OPAM 1.2 to ensure that packagers don't get
this mixed up in the future via a failing configure script, as David suggests?
In OpenBSD, I elected to import the -full archive rather than piecemeal
packaging of the libraries required to build OPAM.

-anil


> On 11 Dec 2014, at 13:56, Roberto Di Cosmo <roberto at dicosmo.org> wrote:
> 
> Just for completeness, here is the info I can confirm after checking with
> the Debian side:
> 
> - in Debian Jessie and Sid, opam 1.2 is now correctly packaged together with
>   aspcud 1.9 and dose 3.3
> 
> - unfortunately, the time-boxed development process of Ubuntu, with a release
>   in mid-October, ended in picking up an inconsistent set of versions of our
>   beloved packages from the Debian timeline; this is not something that only
>   happen to us, it is intrinsically related to these imperfectly aligned
>   processes, and I suppose the Ubuntu people will be quick to act on this,
>   as they are probably used to this kind of events
> 
> --
> Roberto
> 
> On Thu, Dec 11, 2014 at 10:40:57AM +0900, Louis Gesbert wrote:
>> It's indeed completely broken, that's bad news indeed.
>> 
>> But I confirm my diagnostic: aspcud is not in cause, Dose is (well, or the dose interface in opam 1.1, not trying to put the blame on anyone). The problem happens even without aspcud installed.
>> 
>> Here is the original report: https://github.com/ocaml/opam/issues/1683
>> 
>> Opam build got broken between 1.1.1-1 (trusty) and 1.1.1-1build3 (utopic) because the dose version was upgraded from 3.1.3-7build1 to 3.2.2-2build1. It's very painful when everything types and compiles after an upgrade, but gets subtly broken :(
>> 
>> I filed a bug at https://bugs.launchpad.net/ubuntu/+source/opam/+bug/1401346
>> Hope they can act on it quickly...
>> 
>> Thanks for notifying and helping trace this!
>> Louis
>> 
>>> - Anil Madhavapeddy, 10/12/2014 14:54 -
>>> I just reproduced it by following the referenced bug report.
>>> 
>>> From a fresh Ubuntu 14.10, if I do:
>>> 
>>> $ sudo apt-get install opam camlp4-extra aspcud
>>> $ opam init -a
>>> $ opam install mirage -y
>>> $ eval `opam config env`
>>> 
>>> At this point some packages have been installed and mirage is installed.
>>> 
>>> Now however, if I use mirage it invokes opam install again and packages
>>> are reinstalled as a duplicate.  See below:
>>> 
>>> opam install --yes conduit cow cowabloga crunch cstruct io-page lwt mirage-clock-unix mirage-conduit mirage-console mirage-fs-unix mirage-http mirage-net-unix mirage-types mirage-unix tcpip vchan
>>> [NOTE] Package mirage-types is already installed (current version is 2.1.0).
>>> [NOTE] Package lwt is already installed (current version is 2.4.6).
>>> [NOTE] Package io-page is already installed (current version is 1.1.1).
>>> [NOTE] Package cstruct is already installed (current version is 1.4.0).
>>> [NOTE] Package crunch is already installed (current version is 1.3.0).
>>> [WARNING] mirage-unix.2.1.0 references unknown package mirage-profile
>>> The following actions will be performed:
>>> - install ocamlfind.1.5.5 [required by cowabloga, crunch, mirage-fs-unix, mirage-http]
>>> - install base-no-ppx.base [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install camlp4.4.01.0 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install base-threads.base [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install base-bigarray.base [required by cowabloga]
>>> - install base-unix.base [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install xmlm.1.2.0 [required by cowabloga]
>>> - install uutf.0.9.3 [required by cowabloga]
>>> - install stringext.1.1.0 [required by cowabloga, mirage-http]
>>> - install ssl.0.4.7 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install re.1.2.2 [required by cowabloga, mirage-http]
>>> - install ounit.2.0.0 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install hex.0.1.0 [required by cowabloga]
>>> - install cmdliner.0.9.5 [required by cowabloga, crunch, mirage-http]
>>> - install base64.1.0.0 [required by cowabloga, mirage-http]
>>> - install base-bytes.legacy [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install ulex.1.1 [required by cowabloga]
>>> - install type_conv.111.13.00 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install optcomp.1.6 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install omd.1.2.3 [required by cowabloga]
>>> - install jsonm.0.9.1 [required by cowabloga]
>>> - install lwt.2.4.6 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install crunch.1.3.0
>>> - install sexplib.111.25.00 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install fieldslib.109.20.03 [required by cowabloga, mirage-http]
>>> - install dyntype.0.9.0 [required by cowabloga]
>>> - install ocplib-endian.0.7 [required by cowabloga, mirage-fs-unix, mirage-http]
>>> - install uri.1.7.2 [required by cowabloga, mirage-http]
>>> 
>>> I've not managed to narrow it down further to a smaller test case, but the OPAMDEBUG
>>> gist is up at: https://gist.github.com/avsm/62e28b05e2b282ed5fbe
>>> 
>>> Any inspiration from there from the CUDF interactions in the above gist?
>>> 
>>> -anil
>>> 
>>>> On 10 Dec 2014, at 01:15, Louis Gesbert <louis.gesbert at ocamlpro.com> wrote:
>>>> 
>>>> I've been trying to reproduce the issue, but things seem fine, sort of:
>>>> 
>>>> From what I could gather:
>>>> * trusty (14.04LTS) has 1.1 and aspcud 1.8, it works fine
>>>> * utopic (14.10, latest) has 1.1 and aspcud 1.9
>>>> * vivid (15.04, unreleased) has OPAM 1.2, so it's ok. Recommends aspcud, too
>>>> 
>>>> Note that there should be no conflict that I know of between OPAM 1.1 and aspcud 1.9 -- it's just that newer OPAM will benefit from the more advanced criteria offered. Where we have been hitting problems on Debian was by compiling with a different version of *Dose* [1] (which has a much less standardised interface).
>>>> 
>>>> There is still a known issue, though, the missing dependency on m4 that will bite you as soon as you try to install ocamlfind [2] and which is very badly reported with
>>>> ```
>>>> ===== ERROR while installing ocamlfind.1.5.5 =====
>>>> Internal error:
>>>> "ocamlfind": command not found.
>>>> ```
>>>> 
>>>> so it would still be nice if they could backport (so that there is a better error) or recommend m4.
>>>> 
>>>> Cheers,
>>>> Louis
>>>> 
>>>> 
>>>> [1] https://github.com/ocaml/opam/issues/1683
>>>> [2] https://github.com/ocaml/opam/issues/1658
>>>> 
>>>> - Anil Madhavapeddy, 09/12/2014 11:16 -
>>>>> It looks like the latest Ubuntu has a completely broken OPAM out of the box since it ships with OPAM 1.1.1 and Aspcud 1.9 (which requires OPAM 1.2 due to a changed solver interface).
>>>>> 
>>>>> This leads to issues such as this: https://github.com/mirage/mirage-skeleton/issues/59
>>>>> 
>>>>> Does anyone know how to get in touch with Ubuntu folk to request a backport of OPAM 1.2 to Ubuntu 14.10? 
>>>>> 
>>>>> -anil
>>>>> _______________________________________________
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>>>>> opam-devel at lists.ocaml.org
>>>>> http://lists.ocaml.org/listinfo/opam-devel
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> 
> -- 
> Roberto Di Cosmo
> 
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