For Linux

First of all, you need to install extra packages on your system

Debian based system:

$ apt-get install python-dev gcc libxslt1-dev

Red-hat based system:

$ yum install gcc python-devel libxml2-devel libxslt-devel

Now, you are ready to install Hammr:

$ easy_install progressbar==2.3
$ pip install hammr-3.6

If you already have hammr installed and want to upgrade to the latest version you can run:

$ pip install --upgrade hammr