I am trying to install yt on a cluster at my institution and I ran the install script for the stable version and got this error: "error: could not create '/usr/local/python/2.7.3/lib/python2.7/site-packages/mercurial': Read-only file system".

The last few lines are copied below. Please let me know if I should send anything else. 

Thanks!

Brandon

creating build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/coal-folder.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/style-gitweb.css -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/background.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/style-coal.css -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/hglogo.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/style-paper.css -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/style.css -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/excanvas.js -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/coal-file.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/hgicon.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/mercurial.js -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/feed-icon-14x14.png -> build/lib.linux-x86_64-2.7/mercurial/templates/static

copying mercurial/templates/static/style-monoblue.css -> build/lib.linux-x86_64-2.7/mercurial/templates/static

running build_scripts

creating build/scripts-2.7

copying and adjusting hg -> build/scripts-2.7

changing mode of build/scripts-2.7/hg from 644 to 755

running install

running build

running build_mo

running build_ext

running build_py

running build_scripts

running install_lib

creating /usr/local/python/2.7.3/lib/python2.7/site-packages/mercurial

error: could not create '/usr/local/python/2.7.3/lib/python2.7/site-packages/mercurial': Read-only file system