I cannot install debhelper in an almost fresh install

[firthu]

I am unable to install debhelper in 20.04 (installed 01-feb-2021):

"Reading package lists... DoneBuilding dependency tree
Reading state information... Done
Package debhelper is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source


E: Package 'debhelper' has no installation candidate
"

I have an almost fresh install
I don't have errors while doing the general apt commands clean etc.

cat /var/log/apt/history.log
https://pastebin.com/BAw7YEUs

grep ^deb -r /etc/apt/ --include=*.list
https://pastebin.com/TqZ1xwxk

[schragge]

I don't see

deb http://us.archive.ubuntu.com/ubuntu/ focal main restricted

in your /etc/apt/sources.list.

[grahammechanical]

According to this web site the repository is focal main

https://ubuntu.pkgs.org/20.04/ubuntu...1_all.deb.html

Regards

[schragge]

While at it, add this line as well:

deb http://us.archive.ubuntu.com/ubuntu/ focal-updates main restricted