Tags 993832 +patch thanks I found a fix in the upstream git repo and was able to apply it to the Debian package and build sucessfully in raspbian bookworm-staging. A debdiff is available at https://debdiffs.raspbian.org/main/s/synfig/synfig_1.4.0+dfsg-2+rpi1.debdiff no intent to NMU in Debian.