The official Kaldi toolkit installation is well documented at installation guide.
In order to use Kaldi decoder system wide
follow the instructions in Dockerfile or .travis.yml (For Ubuntu 14.04 or 12.04),
and update the build instructions for your system.
This fork of Kaldi is developed in master branch at https://github.com/UFAL-DSG/pykaldi.
We use pyfst from https://github.com/UFAL-DSG/pyfst, which is installed on top of patched version of OpenFST