[alufers]

There is the "plugin" package which seems really cool and fits the simplistic style of Go (tbh I haven't tried this module myself, only glanced at the documentation), but it does not work on Windows, which I think is the reason it is not used. The ticket about adding Windows support to the plugin package is one of the highest rated ones on Go's GitHub, yet it is still open.

[slx26]

See jdoliner's comment and replies on this thread for more context and information.

[sagichmal]

The plugin package was an experiment and is basically now abandoned, it's not meant for real use.