X-Debbugs-CC: by...@debian.org Hi Boyuan,
You have introduced the /usr/include/utf8 link in libutfcpp-dev, which was after libutf8.h-dev already had that directory. Your changelog entry says: * debian/libutfcpp-dev.maintscript, debian/libutfcpp-dev.links: Add compat symlink to avoid breaking build-dependencies after upstream moved header file paths. Do you remember which packages were affected? Thanks, Bastian