Incoming is broken on Arch Linux after LLVM upgrade

[brson]

https://gist.github.com/Jeaye/c98b280b5ca9055ed114

I did drop our patch to fix python detection, thinking it was fixed upstream. It appears not to be and reapplying our patch to fix python detection does not appear to fix the problem.

[brson]

It may not be related to python. Could just be failing in the vicinity of the python test.

[thestinger]

@brson: the way I end up dealing with this is making a temp directory and putting another python symlink in PATH with it. So perhaps Rust could detect if python is python3 or if only python2 exists and do that before it builds LLVM. That would avoid needing to patch LLVM too.

https://github.com/thestinger/packages/blob/master/cling-svn/PKGBUILD#L21

It looks like LLVM has a PYTHON variable in Makefile.config.in, so perhaps Rust could be using that somehow.

[brendanzab]

I can confirm that this also occurs in OS X.

[brendanzab]

Switching to python 2.7 seemed to allow it to build - I was on python 3.3. For those using MacPorts: sudo port select python python27.

[brson]

Fixed.