Cargo Features

[dependencies]
defunctionalize = { version = "0.2.0", default-features = false, features = ["proc-macro"] }
default = proc-macro

The proc-macro feature is set by default whenever defunctionalize is added without default-features = false somewhere in the dependency tree.

proc-macro default = defunctionalize-proc-macro

Features from optional dependencies

In crates that don't use the dep: syntax, optional dependencies automatically become Cargo features. These features may have been created by mistake, and this functionality may be removed in the future.

defunctionalize-proc-macro proc-macro