42 seconds.

Just tried it with go 1.8 and a clean gopath (after downloading). That's on a 3 year old quad core i7 laptop w/ SSD. That's `go install github.com/juju/juju/...` which actually builds two binaries - the client and the server.

dave cheney has been tracking juju build times since the regression in the compiler when it was rewritten from C to go:

older article here: https://dave.cheney.net/2016/04/02/go-1-7-toolchain-improvem...

spreadsheet: https://docs.google.com/spreadsheets/d/1mczKWp3DUuQvIAwZiORD...