`cargo fmt` doesn't accept `--manifest-path`

[epage]

I ran into this today when trying to integrate rust with a proprietary toolchain. I was finding it easier to not change my CWD and was instead explicitly passing --manifest-path but cargo fmt doesn't accept it.

[topecongiro]

Could you try passing --package instead?

[epage]

Both fail:

cargo fmt --package source\rust_test\Cargo.toml -- --write-mode=diff
cargo fmt --package source\rust_test -- --write-mode=diff
``
with an error about `cargo manifest` failing

I originally passed over `--package` because I was looking for `--manifest-path` but also when browsing the help, the part about workspaces made me think it didn't apply to me.

-p, --package <package>
                    specify package to format (only usable in workspaces)

Also should mention: "rustfmt 0.6.1-stable (49279d71 2018-05-08)"

[epage]

Looks like pretty much every time cargo metadata is called, None is passed in as the manifest path

https://github.com/rust-lang-nursery/rustfmt/blob/master/src/cargo-fmt/main.rs#L234

[corasaurus-hex]

I'm having this same problem.

[corasaurus-hex]

It looks like clippy and run still support the --manifest-path argument.

$ cargo run --manifest-path Code/exercism/rust/saddle-points/Cargo.toml
error: a bin target must be available for `cargo run`
~
$ cargo clippy --manifest-path Code/exercism/rust/saddle-points/Cargo.toml
    Checking saddle-points v1.3.0 (file:///Users/nsutton/Code/exercism/rust/saddle-points)
error: expected expression, found `)`
  --> src/lib.rs:13:9
   |
13 |         );
   |         ^ expected expression

error: aborting due to previous error

error: Could not compile `saddle-points`.

To learn more, run the command again with --verbose.
~
$ cargo fmt --manifest-path Code/exercism/rust/saddle-points/Cargo.toml
Invalid argument: `Code/exercism/rust/saddle-points/Cargo.toml`.
usage: cargo fmt [options]

Options:
    -h, --help          show this message
    -q, --quiet         no output printed to stdout
    -v, --verbose       use verbose output
    -p, --package <package>
                        specify package to format (only usable in workspaces)
        --version       print rustfmt version and exit
        --all           format all packages (only usable in workspaces)

This utility formats all bin and lib files of the current crate using rustfmt. Arguments after `--` are passed to rustfmt.
~
$

I ran into this because the spacemacs rust layer relies on it. More specifically, cargo.el.