Jitsu doesn't use ezjsonm directly. It looks like the constraint is
correct for Irmin 0.9.9 though [1] -- shouldn't ezjsonm 0.4.1 have been
installed automatically when Irmin was pinned?

(Could also be related to [2])

1.https://github.com/ocaml/opam-repository/blob/master/packages/irmin/irmin.0.9.9/opam
2.https://github.com/mirage/irmin/issues/317

--
Magnus
 
 
On Mon, 12 Oct 2015, at 10:12, Anil Madhavapeddy wrote:
> Thanks -- is there a bug open for the ezjsonm constraint as well?  The older 
> versions of Jitsu should all have upper bounds to prevent the conflicting 
> libraries from being selected.
>  
> Anil
>  
>> On 9 Oct 2015, at 21:31, Heikki Mahkonen <[email protected]> wrote:
>>  
>> FYI
>>  
>> ---------- Forwarded message ----------
>> From: *Heikki Mahkonen* <[email protected]>
>> Date: Fri, Oct 9, 2015 at 12:58 PM
>> Subject: Re: [MirageOS-devel] Problem compiling Jitsu
>> To: Magnus Skjegstad <[email protected]>
>>  
>>  
>> Hi,
>> Thank you for the quick reply! I got it working now. I had to also pin the 
>> ezjsonm to 0.4.1.
>>  
>> > opam pin add ezjsonm 0.4.1
>>  
>> Thanks guys!
>> BR,
>>  
>> Heikki
>>  
>> On Fri, Oct 9, 2015 at 10:52 AM, Magnus Skjegstad <[email protected]> wrote:
>>> __
>>>  
>>> On Fri, 9 Oct 2015, at 18:58, Heikki Mahkonen wrote:
>>>  
>>>>  
>>>> Hi guys,
>>>> Can anybody help with this? I have problem compiling mirage/jitsu on 
>>>> Ubuntu.
>>>>  
>>>> [...]
>>>>  
>>>> # File "irmin_backend.ml[1]", line 39, characters 65-88:
>>>> # Error: Unbound type constructor Irmin.t
>>>> # make: *** [/home/user/.opam/4.01.0/build/jitsu.0.2/bin/jitsu] Error 2
>>>>  
>>>  
>>> This error is caused by a recent API change in Irmin 0.9.10 and will be 
>>> fixed in the next version of Jitsu.
>>>  
>>> As a temporary solution you can pin Irmin to version 0.9.9 with 'opam pin 
>>> add irmin 0.9.9'. You should then be able to install Jitsu with 'opam 
>>> install jitsu'.
>>>  
>>> I have submitted a PR to add a version constraint in opam [1], but it may 
>>> take some time before it is merged and propagated.
>>>  
>>> 1. https://github.com/ocaml/opam-repository/pull/4941
>>>  
>>>  
>>> Magnus
>>>  
>>  
>>  
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Links:

  1. http://irmin_backend.ml/
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