I always get this error trying to create a new project:
package golang.org/x/tools/go/gcimporter: cannot find package "golang.org/x/tools/go/gcimporter" in any of:
/usr/local/Cellar/go/1.7.1/libexec/src/golang.org/x/tools/go/gcimporter (from $GOROOT)
/Users/kevincantwell/gdrive/Code/gopath/src/golang.org/x/tools/go/gcimporter (from $GOPATH)
Error: exit status 1
The current package name in the tools repo is golang.org/x/tools/go/gcimporter15. It looks like buffalo is only compatible with older versions.