Public bug reported:
The latest release of the 18.04 LTS livecd downloaded a few days ago
appears to have been shipped with unmet dependencies that leave the
package manager apt in a broken state. The end result being apt blocks
further package installation (i.e. in my case bcache-tools). After
searching this issue doesn't appear to have been reported yet.
The package, bsd-mailx, has an unmet dependency for default-mta or mail-
transport-agent which apt resolves to postfix.
Postfix is not installed by default within the live environment and the
normal procedure of using apt-get --fix-missing install does not
complete due to a problem during installation with the postfix debian
package.
Removal of the bsd-mailx package is necessary to resume normal package
manager operations, and its unclear whether the removal breaks other
expected (or required) functionality of the 18.04 LTS OS.
I'd also like to add the error output for apt could be greatly improved
for both readability and troubleshooting complexity if the output
between --fixmissing and apt install exceptions were consistent.
The --fix-missing output does not correctly reference the package with
the unmet dependency. In this particular case the output reference
refers to postfix which was a package name resolution by apt from
default-mta or mail-transport-agent.
The result being several, potentially unnecessary, extra steps during
troubleshooting and identification of the package causing the issue.
Description: Ubuntu 18.04.1 LTS
Release: 18.04
Removing bsd-mailx (8.1.2-0.20160123cvs-4)
** Affects: ubuntu
Importance: Undecided
Status: New
** Tags: 18.04lts apt broken livecd
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https://bugs.launchpad.net/bugs/1809516
Title:
18.04 LTS LiveCD ships with unmet dependency breaking apt state
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