Regarding the fairly broken openscad-git package: On Feb 28th I posted a cleaned up pkgbuild in the comments. On Mar 5th I emailed the maintainer requesting that he fix up his package, and again linked my pkgbuild.
There has been no response, and so I am involuntarily refurbishing the openscad-git in order to bring it up to par with our official openscad package. -Kyle http://kmkeen.com
