Package is completely broken due to unsatisfiable dependencies

[Alistair Buxton]

Upon installing and running mitmproxy the following error is produced:

pkg_resources.ContextualVersionConflict: (urwid 2.0.1 (/usr/lib/python3/dist-packages), Requirement.parse('urwid<1.4,>=1.3.1'), {'mitmproxy'})

This is saying that it can't run because I have urwid 2.0.1 (the version which is packaged in Ubuntu) and it needs 1.3.1 (which is not available in Ubuntu).

Due to this the package seems to be unusable.

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: mitmproxy 2.0.2-3
ProcVersionSignature: Ubuntu 4.15.0-39.42-generic 4.15.18
Uname: Linux 4.15.0-39-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.9-0ubuntu7.5
Architecture: amd64
CurrentDesktop: XFCE
Date: Mon Dec 17 11:32:00 2018
InstallationDate: Installed on 2018-05-07 (223 days ago)
InstallationMedia: Xubuntu 18.04 LTS "Bionic Beaver" - Release amd64 (20180426)
PackageArchitecture: all
SourcePackage: mitmproxy
UpgradeStatus: No upgrade log present (probably fresh install)