Provider

A constructor for simple value objects, known as provider instances. This value has a dual purpose:

It is a function that can be called to construct ‘struct’-like values:
DataInfo = provider() d = DataInfo(x = 2, y = 3) print(d.x + d.y) # prints 5
Note: Some providers, defined internally, do not allow instance creation

It is a key to access a provider instance on a Target

DataInfo = provider()
def _rule_impl(ctx)
  ... ctx.attr.dep[DataInfo]

Create a new Provider using the provider function.

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