Can't use a custom proc_macro_attribute at crate root

[DanielShaulov]

I have a proc-macro crate mycrate, that defines a #[proc_macro_attribute] function mymacro.
There is no way to use it (that I could find) at crate root level

I tried this code:

#![feature(proc_macro)]
extern crate mycrate;
#![mycrate::mymacro]

And I get the following error:
error: an inner attribute is not permitted in this context
As I understand this is because I use it after the extern crate, but it won't resolve before it.

(I know this feature is not stable yet, just want to know if there is a plan/workaround for this)

Meta

rustc --version --verbose:

rustc 1.19.0-nightly (554c685b0 2017-06-14)
binary: rustc
commit-hash: 554c685b0b3b25b7aa752717edf50b8d6bcab7a0
commit-date: 2017-06-14
host: x86_64-pc-windows-msvc
release: 1.19.0-nightly
LLVM version: 4.0

[kennytm]

Duplicate of #41430?

[Mark-Simulacrum]

I believe so, yes. Closing.