I have the same problem. As far as I see the new firefox package has a postinst script which wants to register /usr/bin/firefox for update-alternatives. In the package data /usr/bin/firefox is a link to /usr/lib/firefox/firefox. After the package is extracted, the link /usr/bin/firefox exists as /usr/bin/firefox.real but there is no /usr/bin/firefox. Since the postinst script calls update-alternatives with the not existing file, it returns an error.
Searching in the internet for firefox.real gives findings where others have a script at /usr/bin/firefox which searches for firefox.real and starts this if it's existing and if not starts firefox-esr.
For me this looks like there was a mechanism to switch between firefox and firefox-est in earlier versions of Debian which is only partially removed. Maybe someone else knows more.
Searching in the internet for firefox.real gives findings where others have a script at /usr/bin/firefox which searches for firefox.real and starts this if it's existing and if not starts firefox-esr.
For me this looks like there was a mechanism to switch between firefox and firefox-est in earlier versions of Debian which is only partially removed. Maybe someone else knows more.
Statistics: Posted by blackbird — 2024-09-10 20:50