Thanks for the investigation Sergio! I agree with your solution, I did not check the upstream Makefile :) I attached a new debdiff with your solution.
** Attachment added: "debdiff2" https://bugs.launchpad.net/ubuntu/+source/redshift/+bug/1940465/+attachment/5519111/+files/debdiff2 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1940465 Title: redshift/1.12-4.2 FTBFS in Impish To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/redshift/+bug/1940465/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs