Does not find xb-tool

xb-tool is not installed in PATH, at least in Debian, and diffoscope does not find it:

$ dpkg -l libxmlb-dev diffoscope | grep ^ii
ii  diffoscope        209          all          in-depth visual diff tool for files, archives and directories
ii  libxmlb-dev:amd64 0.3.6-2      amd64        development files for libxmlb
$ diffoscope --list-missing-tools
Available-in-Debian-packages: libxmlb-dev
External-Tools-Required: cbfstool, lipo, otool, xb-tool
Missing-Python-Modules: r2pipe

xb-tool on Debian is installed into /usr/lib/$multarchtriplet/ (and upstream installs it into the libexec dir, which I believe also is not typically in PATH):

$ PATH=$PATH:/usr/lib/x86_64-linux-gnu/ diffoscope --list-missing-tools
Available-in-Debian-packages: 
External-Tools-Required: cbfstool, lipo, otool
Missing-Python-Modules: r2pipe

live well,

vagrant