When I run (for example) apt info python3.8, the last line of the output is the following one.
N: There is 1 additional record. Please use the '-a' switch to see it
Following what that line suggested, I tried apt info -a python3.8, but all I got is the following error message.
E: Command line option 'a' [from -a] is not understood in combination with the other options.
Thinking it simply meant the option should be the first one, I tried apt -a info python3.8 and apt -a python3.8 but I got the exact same error message.
To my surprise, even apt -a gave me the same error message.
How can I see the additional records, if the suggested option doesn't work?
Notice that this happens with a fresh installation of Pop!_OS 19.10, on a virtual machine and on a physical machine. I take it cannot be caused from conflicts between installed packages.
ACCEPTED]
From your description, it sounds like your issue is related to this bug report [1]
The report has an easy workaround while awaiting for the apt-1.9.5 package to be released to your distribution:
apt show -a $pkg
[1] https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1843812
infowas an alias ofshow. To say the truth, neitherman aptnorman apt-cachesayinfois accepted as sub-command. - avpaderno