Thanks for taking the time to report this bug and try to make Ubuntu
better.
>From the logs I see it was a failure in the lua5.3 postinst script:
Setting up lua5.3 (5.3.3-1.1ubuntu2) ...
update-alternatives: error: alternative link /usr/bin/lua is already managed by
lua
dpkg: error processing package lua5.3 (--configure):
installed lua5.3 package post-installation script subprocess returned error
exit status 2
The postinst script tries to run update-alternatives and it fails with
exit code 2 which means "Problems were encountered whilst parsing the
command line or performing the action". The command call seems OK so I
believe it was an issue while trying to run it.
I set up a Bionic container, installed lua5.{1,2,3} (it is what you have
in your system), and upgraded it to Focal without problems. And the
update-alternatives worked fine for all the lua version:
root@lua-upgrade:~# update-alternatives --query lua-interpreter
Name: lua-interpreter
Link: /usr/bin/lua
Slaves:
lua-manual /usr/share/man/man1/lua.1.gz
Status: auto
Best: /usr/bin/lua5.2
Value: /usr/bin/lua5.2
Alternative: /usr/bin/lua5.1
Priority: 110
Slaves:
lua-manual /usr/share/man/man1/lua5.1.1.gz
Alternative: /usr/bin/lua5.2
Priority: 120
Slaves:
lua-manual /usr/share/man/man1/lua5.2.1.gz
Alternative: /usr/bin/lua5.3
Priority: 120
Slaves:
lua-manual /usr/share/man/man1/lua5.3.1.gz
Could you please explain more about your setup? Because I was not able to
reproduce the failure more details are needed. I am marking this bug as
Incomplete for now but as soon as you give us more details please move it back
to New.
** Changed in: lua5.3 (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1898588
Title:
package lua5.3 5.3.3-1.1ubuntu2 failed to install/upgrade: installed
lua5.3 package post-installation script subprocess returned error exit
status 2
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