[Nut-upsdev] LibUSB-1.0+0.1 testing wanted, NUT 2.7.5 pending

Jim Klimov jimklimov at gmail.com
Tue Jan 4 08:17:26 GMT 2022

A small heads-up: the DC/Networking migration (impacting NUT CI farm) took
longer than anticipated, but should be completed today. So the earlier
postponed merges of several large waiting PRs (several layers of
libusb-1.0* iterations and several device supports) should continue this


On Tue, Dec 28, 2021, 09:16 Jim Klimov <jimklimov at gmail.com> wrote:

> Small notice: people willing to test have suddenly got a couple more days
> before I merge these libusb* branches and other large pending PRs.
> FossHost (who provide VMs for the NUT CI farm) are currently migrating
> them to another datacenter by 29th evening, and we'd be changing networking
> setup along the way, so to avoid loss of build history I'd rather avoid
> main-branch changes for a few days.
> Happy holidays,
> Jim Klimov
> On Tue, Dec 21, 2021, 21:42 Jim Klimov <jimklimov+nut at gmail.com> wrote:
>> Hello fellow NUTs :)
>>   It seems the magic of the season might just help us finish some long
>> story arcs and tie up loose ends... oh, wait, that is wording about other
>> "seasons" ;)
>>   In our case, the "fightwarn" effort is reaching a major milestone to
>> finally pass the builds with "medium" level of warnings treated as fatal
>> errors - with zero warnings. This achievement took a bit over a year, and
>> almost 3000 commits to analyze and stomp out different small bugs, and it
>> allows to set that tolerance level as default and insist on non-regressions
>> with future iterations - as well as to work towards clearing the "hard"
>> level eventually. And this became one of the criteria for cutting a new
>> official NUT release (especially as new platforms refused to build release
>> 2.7.4 with their default settings).
>>   This work has originally delayed merging of libusb-1.0 support (from
>> issue https://github.com/networkupstools/nut/issues/300 and several
>> candidate branches to pick from), in particular because with the original
>> codebase sporting thousands of build warnings, it was hard to notice any
>> new "offences" introduced by this large set of changes. I was afraid that
>> merging it would even have to wait until after the next NUT release, but in
>> the end found that some remaining warnings in the original USB-related NUT
>> codebase made those branches' changes the better solution.
>>   Now, before we find the hard way if the cure is worse than the disease,
>> I would like to ask people with USB-connected UPSes (and also those using
>> the MGE SHUT protocol) to build and test
>> https://github.com/networkupstools/nut/tree/fightwarn-libusb-1.0+0.1
>> branch with their setups - hopefully hitting as many OSes and CPU types as
>> feasible, as well as trying both libusb-0.1, libusb-1.0 (and not sure about
>> libusb-0.1-compat).
>>   For building from scratch, note we now have a list of prerequisite
>> packages for several platforms at
>> https://github.com/networkupstools/nut/blob/master/docs/config-prereqs.txt
>> - and as for other code, PRs there are welcome too.
>> Note also the new `ci_build.sh` script to automate a number of
>> configurations and setups, usually reducing the typing needed to reproduce
>> build attempts :)
>>   I understand that some people would be away for holidays, but also
>> realize that for others these days may be among the few times in the year
>> that can be dedicated to such experiments and other hobbies. It would be
>> much appreciated if you can help bring the official new confident NUT
>> release date closer ;)
>>   The NUT CI farm is busy testing hundreds of build combinations formally
>> in software, but it is no replacement for tests against actual hardware.
>>   Also, great thanks to dozens of individual and corporate contributors
>> adding and fixing NUT drivers and other features (a few are still being
>> tested and may become part of the new release too), and sharing findings
>> and ideas in the issue tracker -- you guys and gals are our real heroes!
>>   Finally, on behalf of the NUT core team, please let me wish you all a
>> happy holiday season and some quality time to rest, walk, ski and be with
>> family and friends!
>> Jim Klimov
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