[Libguestfs] nbdkit rust plugin: copyright notices, Cargo workspace, and macro hygiene

[Richard W.M. Jones]

I pushed 2 & 3, thanks.

But ...

> From 9fa3e443467e3c06761ec54241327e8daf8701ca Mon Sep 17 00:00:00 2001
> From: Alan Somers <asomers at gmail.com>
> Date: Mon, 15 Jun 2020 16:59:53 -0600
> Subject: [PATCH 1/3] Add a Cargo.toml file to the top-level directory
> 
> This is necessary for other Rust projects to depend on unrelesed
> versions of the nbdkit crate.
> ---
>  Cargo.toml | 2 ++
>  1 file changed, 2 insertions(+)
>  create mode 100644 Cargo.toml
> 
> diff --git a/Cargo.toml b/Cargo.toml
> new file mode 100644
> index 00000000..f50a66b7
> --- /dev/null
> +++ b/Cargo.toml
> @@ -0,0 +1,2 @@
> +[workspace]
> +members = ["plugins/rust"]

Is it really absolutely necessary to have this in the top level
directory of the source tree?

Rich.

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