I'm surprised to see the author mention not being able to compile when there are unused imports. Editor plugins that call goimports have solved this problem for a long time now. For example, I use vim-go (https://github.com/fatih/vim-go), and if I remove the only line of code that references the "fmt" package, the "fmt" import line at the top of the file will automatically be removed.

Edit: Here is the reasoning on the FAQ behind code with unused imports not compiling: https://golang.org/doc/faq#unused_variables_and_imports