Purity is a static analyzer which determines the purity of Erlang functions. It can be used as a standalone application or as part of other applications, through a simple API.
After retrieving a copy of the source code with
git clone git://github.com/mpitid/purity.git
change into the purity directory and run make to build the code.
Currently there is no mechanism for automated installation, so you will have to do the following manually:
Add the directory to the ERL_LIBS environment variable. Assuming you
cloned the code to your home directory, something like the following
will suffice:
export ERL_LIBS="$HOME/purity"
Bash users may place this directive in their $HOME/.bashrc file, so
that it’s executed upon login.
You also need to place a copy of the purity script in the toplevel
directory to some other directory in your PATH, for instance
/usr/local/bin. Alternatively you can add the cloned directory to the
PATH environment variable as well, with
export PATH="$PATH:$HOME/purity"
To sum up, these are the complete instructions for a user of the bash shell:
git clone git://github.com/mpitid/purity.git cd purity make echo ERL_LIBS="`pwd`" >> $HOME/.bashrc echo PATH=\$PATH:`pwd` >> $HOME/.bashrc source $HOME/.bashrc
Purity has only been tested on Debian GNU/Linux so far.
Purity Copyright (c) 2009-2010, Michael Pitidis, Kostis Sagonas
Purity is distributed under the GNU Lesser General Public License (LGPL). This means that you can link Purity into proprietary applications, provided you follow the rules stated in the LGPL. You can also modify Purity; if you distribute a modified version, you must distribute it under the terms of the LGPL, which in particular means that you must release the source code for the modified software. See COPYING for more information.