I've recently been bit by global state that used function initializers (func init() isn't the only way to execute logic when a package is imported!). The package used very reasonable defaults, but panic()'d when things didn't look right. So, forking, maintaining patches until upstream changes the behavior, painful.
Those are all appended into the Package.init function in the compiled .a, so they are part of func init() not just in behavior, but in implementation as well.
