Possibly, but by moving flags up to the constants you also run the risk of obfuscating things further. A little bit of repetition when it comes to compiler flag

Possibly, but by moving flags up to the constants you also run the risk of obfuscating things further. A little bit of repetition when it comes to compiler flags (especially in Go where there are relatively few) is a good trade for the added clarity it conveys. Invoking a particular binary is valid, but even there, you only need one constant, not one for every subcommand.