GNU sed doesn't work

[mattsday]

If the user has GNU sed (either linux or on OS X done brew install gnu-sed --with-default-names it will fail:

Creating Service Definitions
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory
sed: can't read : No such file or directory

The app service then won't correctly deploy.

I suspect this is due to sed -i "" usage, which breaks GNU sed.