Public bug reported:

The Problem: The installation failed because two different packages
(libdart6.13 and libdart-core+collisions+odelcpsolver6.13) are trying to
install the exact same file (/usr/lib/x86_64-linux-
gnu/libdart.so.6.13.2).

The Cause: This is a package conflict (specifically a file overwrite
conflict) in Ubuntu/Debian package management, often caused by mixing
repositories (like OSRF/ROS packages with standard ones).

ProblemType: Package
DistroRelease: Ubuntu 24.04
Package: libdart6.13 (not installed)
ProcVersionSignature: Ubuntu 7.0.0-29.29~24.04.2-generic 7.0.12
Uname: Linux 7.0.0-29-generic x86_64
ApportVersion: 2.28.3-0ubuntu0.1
AptOrdering:
 libdart-external-odelcpsolver6.13:amd64: Install
 libdart6.13:amd64: Install
 libdart-collision-bullet6.13:amd64: Install
 NULL: ConfigurePending
Architecture: amd64
CasperMD5CheckMismatches: ./casper/minimal.standard.live.squashfs
CasperMD5CheckResult: fail
Date: Thu Aug 20 16:18:27 2026
ErrorMessage: trying to overwrite 
'/usr/lib/x86_64-linux-gnu/libdart.so.6.13.2', which is also in package 
libdart-core+collisions+odelcpsolver6.13:amd64 6.13.2+ds1-1~osrf2~noble
InstallationDate: Installed on 2026-08-15 (5 days ago)
InstallationMedia: Ubuntu 24.04.4 LTS "Noble Numbat" - Release amd64 (20260210)
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal, 
3.12.3-0ubuntu2.1
PythonDetails: N/A
RelatedPackageVersions:
 dpkg 1.22.6ubuntu6.6
 apt  2.8.3
SourcePackage: dart
Title: package libdart6.13 (not installed) failed to install/upgrade: trying to 
overwrite '/usr/lib/x86_64-linux-gnu/libdart.so.6.13.2', which is also in 
package libdart-core+collisions+odelcpsolver6.13:amd64 6.13.2+ds1-1~osrf2~noble
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: dart (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-package noble

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https://bugs.launchpad.net/bugs/2164652

Title:
  The Problem: The installation failed because two different packages

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