I guess borgbackup needs to have it's dependency changed, see: https://github.com/borgbackup/borg/issues/3889

This is a problem with current stable Fedora (28), too.

[dalley@localhost Backup Drive]$ sudo dnf info python3-msgpack
Last metadata expiration check: 0:59:50 ago on Sun 23 Sep 2018 05:17:30 PM EDT.
Installed Packages
Name         : python3-msgpack
Version      : 0.5.6
Release      : 5.fc28
Arch         : x86_64
Size         : 296 k
Source       : python-msgpack-0.5.6-5.fc28.src.rpm

Same traceback when using borgbackup as in the post.

Quick fix is to patch borgbackup setup.py to require msgpack instead of msgpack-python.

I'm sorry about the breakage. I've added  backwards facing provide but I haven't tough about entrypoints. Being able to provide both metadata for msgpack-python and msgpack would be nice but very hackish.

I'll gladly send patches for what I've broken (at least when it's not breakage on purpose :D), working on a downstream PR, will send upstream.

F30: https://src.fedoraproject.org/rpms/borgbackup/pull-request/1
F29: https://src.fedoraproject.org/rpms/borgbackup/pull-request/2
F28: https://src.fedoraproject.org/rpms/borgbackup/pull-request/3

In the right columns of those PRs, there are simple-koji-ci scratch builds. Once they build, could you please check if it works?

Upstream is ware https://github.com/borgbackup/borg/pull/3891

> i will change to "msgpack" name, but it'll have to wait until 1.2.0.

*aware

I can confirm the rawhide one works fine here.

The builds are running.

https://koji.fedoraproject.org/koji/taskinfo?taskID=29846765
https://koji.fedoraproject.org/koji/taskinfo?taskID=29846775
https://koji.fedoraproject.org/koji/taskinfo?taskID=29846783

I'll bodhi them in ~8-9 hours (I'm off to bed).

borgbackup-1.1.7-2.fc28 has been submitted as an update to Fedora 28. https://bodhi.fedoraproject.org/updates/FEDORA-2018-e7aa6d923f

borgbackup-1.1.7-2.fc29 has been submitted as an update to Fedora 29. https://bodhi.fedoraproject.org/updates/FEDORA-2018-390e4ad530

sorry i'm late to the party, i have pushed updates of borgbackup for f28 and f29

*** Bug 1632147 has been marked as a duplicate of this bug. ***

*** Bug 1632885 has been marked as a duplicate of this bug. ***

borgbackup-1.1.7-2.fc29 has been pushed to the Fedora 29 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-390e4ad530

borgbackup-1.1.7-2.fc28 has been pushed to the Fedora 28 testing repository. If problems still persist, please make note of it in this bug report.
See https://fedoraproject.org/wiki/QA:Updates_Testing for
instructions on how to install test updates.
You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-e7aa6d923f

*** Bug 1633465 has been marked as a duplicate of this bug. ***

Similar problem has been detected:

Given borgbackup version 1.1.7-1.fc28 is installed from F28 updates repo
And python3-msgpack version 0.5.6-4.fc28 is installed from F28 updates repo
When I run "borg --help" from the command-line
Then I receive the expected borg help output.

When python3-msgpack is updated to version 0.5.6-5.fc28 from F28 updates repo
And I run "borg --help" from the command-line
Then I receive a "pkg_resources.DistributionNotFound: The 'msgpack-python!=0.5.0,!=0.5.1,!=0.5.2,!=0.5.3,!=0.5.4,!=0.5.5,<=0.5.6,>=0.4.6' distribution was not found and is required by borgbackup" error.

reporter:       libreport-2.9.5
cmdline:        /usr/bin/python3 /usr/bin/borg --help
crash_function: resolve
exception_type: pkg_resources.DistributionNotFound
executable:     /usr/bin/borg
interpreter:    python3-3.6.6-1.fc28.x86_64
kernel:         4.18.9-200.fc28.x86_64
package:        borgbackup-1.1.7-1.fc28
reason:         __init__.py:774:resolve:pkg_resources.DistributionNotFound: The 'msgpack-python!=0.5.0,!=0.5.1,!=0.5.2,!=0.5.3,!=0.5.4,!=0.5.5,<=0.5.6,>=0.4.6' distribution was not found and is required by borgbackup
runlevel:       N 5
type:           Python3
uid:            1000

Hang on. The fix is on it's way to the updates repo in borgbackup-1.1.7-2.fc28.

(In reply to C L from comment #17)
> Given borgbackup version 1.1.7-1.fc28 is installed from F28 updates repo
> And python3-msgpack version 0.5.6-4.fc28 is installed from F28 updates repo
> When I run "borg --help" from the command-line
> Then I receive the expected borg help output.
> 
> When python3-msgpack is updated to version 0.5.6-5.fc28 from F28 updates repo
> And I run "borg --help" from the command-line
> Then I receive a "pkg_resources.DistributionNotFound: The
> 'msgpack-python!=0.5.0,!=0.5.1,!=0.5.2,!=0.5.3,!=0.5.4,!=0.5.5,<=0.5.6,>=0.4.
> 6' distribution was not found and is required by borgbackup" error.

Same for me. As a workaround, I downgraded `python3-msgpack` with `dnf downgrade`. This implicitly downgrades `borgbackup` though, which loses a few bug fixes between that package and the newest.

Use `dnf update borkgbackup --enablerpo=updates-testing` instead to get the fixed new version.

borgbackup-1.1.7-2.fc28 has been pushed to the Fedora 28 stable repository. If problems still persist, please make note of it in this bug report.

borgbackup-1.1.7-2.fc29 has been pushed to the Fedora 29 stable repository. If problems still persist, please make note of it in this bug report.

Hello,

The issue still exist on fedora 30.
cat /etc/redhat-release 
Fedora release 30 (Thirty)

dnf info borgbackup
Dernière vérification de l’expiration des métadonnées effectuée il y a 1:11:18 le mer. 01 mai 2019 18:58:44 CEST.
Paquets installés
Nom          : borgbackup
Version      : 1.1.7
Publication  : 2.fc30
Architecture : x86_64
Taille       : 4.1 M
Source       : borgbackup-1.1.7-2.fc30.src.rpm
Dépôt        : @System
Depuis le dé : fedora
Résumé       : A deduplicating backup program with compression and authenticated encryption
URL          : https://borgbackup.readthedocs.org
Licence      : BSD
Description  : BorgBackup (short: Borg) is a deduplicating backup program. Optionally, it
             : supports compression and authenticated encryption.

dnf info python3-msgpack
Dernière vérification de l’expiration des métadonnées effectuée il y a 1:10:42 le mer. 01 mai 2019 18:58:44 CEST.
Paquets installés
Nom          : python3-msgpack
Version      : 0.6.1
Publication  : 2.fc30
Architecture : x86_64
Taille       : 283 k
Source       : python-msgpack-0.6.1-2.fc30.src.rpm
Dépôt        : @System
Depuis le dé : fedora
Résumé       : A Python MessagePack (de)serializer
URL          : https://msgpack.org/
Licence      : ASL 2.0
Description  : MessagePack is a binary-based efficient data interchange format that is
             : focused on high performance. It is like JSON, but very fast and small.
             : This is a Python 3.7 (de)serializer for MessagePack.


borg -v
Traceback (most recent call last):
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 583, in _build_master
    ws.require(__requires__)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 900, in require
    needed = self.resolve(parse_requirements(requirements))
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 791, in resolve
    raise VersionConflict(dist, req).with_context(dependent_req)
pkg_resources.ContextualVersionConflict: (msgpack 0.6.1 (/usr/lib64/python3.7/site-packages), Requirement.parse('msgpack!=0.5.0,!=0.5.1,!=0.5.2,!=0.5.3,!=0.5.4,!=0.5.5,<=0.5.6,>=0.4.6'), {'borgbackup'})

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/bin/borg", line 6, in <module>
    from pkg_resources import load_entry_point
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3191, in <module>
    @_call_aside
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3175, in _call_aside
    f(*args, **kwargs)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 3204, in _initialize_master_working_set
    working_set = WorkingSet._build_master()
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 585, in _build_master
    return cls._build_from_requirements(__requires__)
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 598, in _build_from_requirements
    dists = ws.resolve(reqs, Environment())
  File "/usr/lib/python3.7/site-packages/pkg_resources/__init__.py", line 786, in resolve
    raise DistributionNotFound(req, requirers)
pkg_resources.DistributionNotFound: The 'msgpack!=0.5.0,!=0.5.1,!=0.5.2,!=0.5.3,!=0.5.4,!=0.5.5,<=0.5.6,>=0.4.6' distribution was not found and is required by borgbackup

borgbackup was updated in F29 but maybe not in F30.

I suggest opening a separate borgbackup bugzilla.