[Libguestfs] [libnbd PATCH v3 01/10] rust: create basic Rust bindings

[Richard W.M. Jones]

Just a note that this patch (I think?) causes this if you don't
have rustfmt installed:

/bin/sh: line 1: rustfmt: command not found
Fatal error: exception Failure("Rustfmt failed with exit code 127")
Raised at Stdlib.failwith in file "stdlib.ml", line 29, characters 17-33
Called from Utils.output_to in file "utils.ml", line 432, characters 21-76
Called from Generator in file "generator.ml", line 65, characters 2-88

I don't think rustfmt should be a mandatory dependency of libnbd, so
we should probably just treat it as a no-op if rustfmt wasn't found.

(See also
https://github.com/libguestfs/libguestfs-common/blob/e70d89a58dae068be2e19c7c21558707261af96a/mlstdutils/guestfs_config.ml.in )

Rich.

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