I am running rawhide and have the same versions installed (libsolv-0.7.12-1.fc33.x86_64 and libdnf-0.47.0-2.fc33.x86_64) and everything works fine for me. I am able to use dnf without issues.

Are you sure you don't have some other installations of libdnf or libsolv present? Possibly manual installations in /local for example?

Are you able to reproduce it on a clean system?

I tried in the container and was able to verify that what you say is true: it worked fine while my rawhide workstation being borked.

I had to go down the ldd & nm route to literally find the symbols in the libraries.

The problem was that rpmdbFStat is defined in librpm, not libsolvext. I had rpm-4.15-1 which did not have the symbol defined and had to update to rpm-4.15.90 - that was fun doing the update by rpm and not by dnf :>

I guess this dependency requirement should be updated in libsolv spec, right?

Yes I thinks so, lets move it to the libsolv component.

Thanks for the investigation.

I think it would be good if RPM will start using symbols versioning: https://github.com/rpm-software-management/rpm/issues/1127

I'll work it around for the time being in libsolv…

Something fishy here, as this is what libtool versioning is supposed to solve: rpm 4.15 library version is 9.0.x and 4.16.x is 9.1.x, which means that something built against 4.15 will run on 4.16 as-is, but not vice versa. 

So the library versions should have stopped this from happening. But yeah, symbol versioning is a more powerful mechanism.

Hi,

Any progress here? I just did 'dnf upgrade' in my Rawhide VM and `dnf' is broken now:

$ dnf search rpm
Traceback (most recent call last):
  File "/usr/bin/dnf", line 57, in <module>
    from dnf.cli import main
  File "/usr/lib/python3.8/site-packages/dnf/__init__.py", line 30, in <module>
    import dnf.base
  File "/usr/lib/python3.8/site-packages/dnf/base.py", line 29, in <module>
    import libdnf.transaction
  File "/usr/lib64/python3.8/site-packages/libdnf/__init__.py", line 12, in <module>
    from . import conf
  File "/usr/lib64/python3.8/site-packages/libdnf/conf.py", line 13, in <module>
    from . import _conf
ImportError: /lib64/libsolvext.so.1: undefined symbol: rpmdbFStat

$ rpm -q rpm
rpm-4.15.1-2.fc32.1.x86_64

Given that I'll have to manually install the upgraded package now, can we maybe raise priority of this ticket?

Also, why does it exist for over a month and "nobody" seems to complain? Does this happen in some corner-case only?

Cheers, Phil

OK, I just died:

$ rpm -U https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-build-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-libs-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-plugin-selinux-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-build-libs-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-plugin-systemd-inhibit-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/r/rpm-sign-libs-4.16.0-0.beta1.1.fc33.1.x86_64.rpm https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/Everything/x86_64/os/Packages/p/python3-rpm-4.16.0-0.beta1.1.fc33.1.x86_64.rpm
error: Failed dependencies:
	python(abi) = 3.9 is needed by python3-rpm-4.16.0-0.beta1.1.fc33.1.x86_64
	python3.8dist(rpm) is needed by (installed) rebase-helper-0.21.0-1.fc33.noarch

How do I get out of this again?

> Also, why does it exist for over a month and "nobody" seems to complain? Does this happen in some corner-case only?

Yes, if you don't fully update your system.

Anyhow, this is fixed in libsolv-0.7.14-2.fc33.

(In reply to Phil Sutter from comment #7)
> OK, I just died:
> 
> $ rpm -U
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-4.16.0-0.beta1.1.fc33.1.x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-build-4.16.0-0.beta1.1.fc33.1.x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-libs-4.16.0-0.beta1.1.fc33.1.x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-plugin-selinux-4.16.0-0.beta1.1.fc33.1.
> x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-build-libs-4.16.0-0.beta1.1.fc33.1.
> x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-plugin-systemd-inhibit-4.16.0-0.beta1.1.
> fc33.1.x86_64.rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/r/rpm-sign-libs-4.16.0-0.beta1.1.fc33.1.x86_64.
> rpm
> https://ftp-stud.hs-esslingen.de/pub/fedora/linux/development/rawhide/
> Everything/x86_64/os/Packages/p/python3-rpm-4.16.0-0.beta1.1.fc33.1.x86_64.
> rpm
> error: Failed dependencies:
> 	python(abi) = 3.9 is needed by python3-rpm-4.16.0-0.beta1.1.fc33.1.x86_64
> 	python3.8dist(rpm) is needed by (installed)
> rebase-helper-0.21.0-1.fc33.noarch
> 
> How do I get out of this again?

you need to remove rebase-helper because that is failing to build and is just broken in rawhide.

(In reply to Igor Raits from comment #8)
> > Also, why does it exist for over a month and "nobody" seems to complain? Does this happen in some corner-case only?
> 
> Yes, if you don't fully update your system.

All I did was call 'dnf upgrade'. If that breaks the box, there's a bug, no?

> Anyhow, this is fixed in libsolv-0.7.14-2.fc33.

Which you pushed less than three hours ago ...


(In reply to Igor Raits from comment #9)
> (In reply to Phil Sutter from comment #7)
[...]
> > error: Failed dependencies:
> > 	python(abi) = 3.9 is needed by python3-rpm-4.16.0-0.beta1.1.fc33.1.x86_64
> > 	python3.8dist(rpm) is needed by (installed)
> > rebase-helper-0.21.0-1.fc33.noarch
> > 
> > How do I get out of this again?
> 
> you need to remove rebase-helper because that is failing to build and is
> just broken in rawhide.

The critical point is python3-rpm requiring python3-3.9. I didn't try, but I guess manual python update without a usable dnf is a pretty masochistic experience, no?

Restored my box by downgrading libsolv:

# rpm --oldpackage -U https://ftp-stud.hs-esslingen.de/pub/fedora/linux/releases/32/Everything/x86_64/os/Packages/l/libsolv-0.7.11-2.fc32.x86_64.rpm

Essentially the problem was python3-IPy package blocking Python update and therefore quite a bunch of packages from being updated.