Re: [MirageOS-devel] some maintenance on the mirage front-end tool is needed

[Anil Madhavapeddy <anil.madhavapeddy@xxxxxxxxxx>]

On 1 Aug 2017, at 10:55, Hannes Mehnert <hannes@xxxxxxxxxxx> wrote:
> 
> Anil,
> 
> On 27/07/2017 11:25, Anil Madhavapeddy wrote:
>> On 26 Jul 2017, at 18:56, Mindy <mindy@xxxxxxxxxxxxxxxxxxx> wrote:
>>> Recently there have been many packages released which replace depopts and 
>>> sublibraries with packages, rename packages to fit more clearly into an 
>>> established naming scheme, or consolidate packages into other places.  In 
>>> many cases corresponding changes haven't landed in the `mirage` front-end 
>>> tool, resulting in breakage when users try `make depend`.  One can see the 
>>> results in a recent test run ( 
>>> https://travis-ci.org/mirage/mirage/jobs/257345457 ), or when trying to 
>>> build dependencies for a unikernel configured with `--dhcp true`; there are 
>>> likely other related problems.
>>> 
>>> Most of these changes are related to packages recently ported to jbuilder.  
>>> If you recently jbuildered something that `mirage` knows about* or you have 
>>> discovered a build problem with mirage's `make depend`, I would appreciate 
>>> your time and attention on this issue.  Both pull requests and issues are 
>>> welcome at https://github.com/mirage/mirage .
>> 
>> Woops, I tried to maintain compatibility in the package names so that there 
>> should have been no impact on the frontend tool, but clearly didn't entirely 
>> succeed :-) Will take a look...
> 
> it would be great if you could unbreak this fallout... see
> https://github.com/mirage/mirage-skeleton/issues/232 for another bug report.

I'm back and generating a release of the frontend tool now.  I have run into a 
number of ancillary changes, particularly unreleased changes in functoria as 
well, so it'll take a few hours...

Thomas(G): are you ok with the current master branch of functoria being 
released? It mostly appears to be new interfaces and end-to-end tests, so I'm 
going to go ahead with it after some testing.

Also: I've activated Travis cron builds of mirage-skeleton, so that we can spot 
breakage in the opam repo more easily.

And finally, we have a general architectural problem with the mirage frontend 
tool that I'm not sure how to solve just yet.  As the opam repository evolves, 
older versions of the tool that generate `opam` files will no longer work, 
since upper bounds are not generated on packages.  The only way around this is 
by generating much more specific `opam` files from `mirage configure`, which 
include an upper bound on their relevant packages.  I think we'll have to deal 
with that another day, but ideas welcome on solutions here...

Anil
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