[Debian-med-packaging] Bug#971148: umap-learn: FTBFS: unsatisfiable build-dependency: python3-llvmlite (< 0.34) but 0.34.0-1 is to be installed

[Lucas Nussbaum]

Source: umap-learn
Version: 0.4.5+dfsg-2
Severity: serious
Justification: FTBFS on amd64
Tags: bullseye sid ftbfs
Usertags: ftbfs-20200926 ftbfs-bullseye

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> +------------------------------------------------------------------------------+
> | Install package build dependencies                                           |
> +------------------------------------------------------------------------------+
> 
> 
> Setup apt archive
> -----------------
> 
> Merged Build-Depends: debhelper-compat (= 13), dh-python, python3, python3-setuptools, python3-numpy, python3-scipy, python3-sklearn, python3-numba, python3-nose, python3-pytest, build-essential, fakeroot
> Filtered Build-Depends: debhelper-compat (= 13), dh-python, python3, python3-setuptools, python3-numpy, python3-scipy, python3-sklearn, python3-numba, python3-nose, python3-pytest, build-essential, fakeroot
> dpkg-deb: building package 'sbuild-build-depends-main-dummy' in '/<<RESOLVERDIR>>/apt_archive/sbuild-build-depends-main-dummy.deb'.
> Ign:1 copy:/<<RESOLVERDIR>>/apt_archive ./ InRelease
> Get:2 copy:/<<RESOLVERDIR>>/apt_archive ./ Release [957 B]
> Ign:3 copy:/<<RESOLVERDIR>>/apt_archive ./ Release.gpg
> Get:4 copy:/<<RESOLVERDIR>>/apt_archive ./ Sources [423 B]
> Get:5 copy:/<<RESOLVERDIR>>/apt_archive ./ Packages [500 B]
> Fetched 1880 B in 0s (0 B/s)
> Reading package lists...
> Reading package lists...
> 
> Install main build dependencies (apt-based resolver)
> ----------------------------------------------------
> 
> Installing build dependencies
> Reading package lists...
> Building dependency tree...
> Some packages could not be installed. This may mean that you have
> requested an impossible situation or if you are using the unstable
> distribution that some required packages have not yet been created
> or been moved out of Incoming.
> The following information may help to resolve the situation:
> 
> The following packages have unmet dependencies:
>  python3-numba : Depends: python3-llvmlite (< 0.34) but 0.34.0-1 is to be installed
> E: Unable to correct problems, you have held broken packages.
> apt-get failed.

The full build log is available from:
   http://qa-logs.debian.net/2020/09/26/umap-learn_0.4.5+dfsg-2_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.