Ask HN: How do you develop on Macbook Air

Looking to see what tools the community use to do development on os x

1) Develop as is on os x by directly installing various tools and apis on the machine 2) Using virtual box - VHD on same HDD as where OS X is installed. 3) Using virtual box - VHD on storage other than main HDD where OS X is installed 4) Using Vagrant - VHD on same HDD as where OS X is installed 5) Using Vagrant - VHD on storage other than main HDD where OS X is installed 6) Using VMware - VHD on same HDD as where OS X is installed 7) Using VMware - VHD on storage other than main HDD where OS X is installed