init function calling order does not have a linearization check

[charles-cooper]

Version Information

• vyper Version (output of vyper --version): 8ccacb3f47f864ec2ff64d5f7ca65625e9df6b2f

What's your issue about?

init functions can be called before their "dependencies", e.g.

import lib1
import lib2

initializes: lib1[lib2 := lib2]
initializes: lib2

@deploy
def __init__():
    lib1.__init__()  # lib2.__init__() has not been called yet!
    lib2.__init__()

How can it be fixed?

add a dependency constraint for calling init functions

[charles-cooper]

we don't need to get fancy about checking branches and so on -- AST order works fine for satisfying the dependency constraint