Almost there. Missing a dependency - libhidapi-hidraw.
On a fresh install, I get this on startup.
flirc_util: error while loading shared libraries: libhidapi-hidraw.so.0: cannot open shared object file: No such file or directory
After installing libhidapi-hidraw the Flirc gui does open and appears to work, but with a lot of shell noise like:
Can't load 'test.ini'
[D] lib/libflirc/flirc_driver.c fl_major_version(391): something bad happened
[D] lib/libflirc/flirc_driver.c fl_minor_version(381): something bad happened
[D] lib/libflirc/flirc_driver.c fl_patch_version(401): something bad happened
[D] lib/libflirc/flirc_driver.c fl_major_version(391): something bad happened
etc, etc, etc.