/usr/ is in libdconf-dev 0.12.0-0ubuntu1.
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..
/usr/lib/x86_64-linux-gnu/pkgconfig/dconf.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libdconf-dev/
/usr/share/doc/libdconf-dev/copyright
/usr/share/vala/
/usr/share/vala/vapi/
/usr/share/vala/vapi/dconf.vapi
/usr/share/vala/vapi/dconf.deps
/usr/include/
/usr/include/dconf/
/usr/include/dconf/dconf-client.h
/usr/include/dconf/dconf-engine.h
/usr/include/dconf/dconf-paths.h
/usr/include/dconf/dconf.h
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/share/doc/libdconf-dev/NEWS.gz
/usr/share/doc/libdconf-dev/changelog.Debian.gz
/usr/lib/x86_64-linux-gnu/libdconf.so