I am sponsoring the fix for this as NMU. Please find the changes in the attached debdiff.
diff -Nru calcurse-4.8.1/debian/changelog calcurse-4.8.1/debian/changelog --- calcurse-4.8.1/debian/changelog 2023-11-01 11:45:27.000000000 +0100 +++ calcurse-4.8.1/debian/changelog 2025-03-05 22:14:01.000000000 +0100 @@ -1,3 +1,11 @@ +calcurse (4.8.1-1.2) unstable; urgency=medium + + * Non-maintainer upload. + * Update B-D to tzdata-legacy to fix FTBFS (Closes: #1086259) + * Recommend tzdata-legacy for full functionality. + + -- Andrew Bower <and...@bower.uk> Wed, 05 Mar 2025 21:14:01 +0000 + calcurse (4.8.1-1.1) unstable; urgency=medium * Non-maintainer upload. diff -Nru calcurse-4.8.1/debian/control calcurse-4.8.1/debian/control --- calcurse-4.8.1/debian/control 2023-11-01 11:45:27.000000000 +0100 +++ calcurse-4.8.1/debian/control 2025-03-05 22:10:20.000000000 +0100 @@ -2,13 +2,14 @@ Section: utils Priority: optional Maintainer: Bartosz Fenski <fe...@debian.org> -Build-Depends: debhelper (>= 10.0.0), libncurses-dev, tzdata +Build-Depends: debhelper (>= 10.0.0), libncurses-dev, tzdata-legacy Standards-Version: 4.5.0 Homepage: https://calcurse.org Package: calcurse Architecture: any Depends: ${shlibs:Depends}, ${misc:Depends}, python3 +Recommends: tzdata-legacy Description: text-based calendar and todo manager CalCurse is a calendar and todo list for the console which allows you to keep track of your appointments and everyday tasks. CalCurse
