Building error

[Spica2]

On building I get this

[Errno 2] No such file or directory [cmd: [u'sass', u'--update', u'/mydir/css/style.scss:/mydir/css/style.css', u'--stop-on-error', u'--no-cache']] [dir: /mydir/css] [path: /usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin] [Finished]

and path encreases with each build

[path: /usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin]

[Spica2]

ok, damn, sass was not installed.