cargo install subkey fails

[TriplEight]

Rust versions:

   stable-x86_64-unknown-linux-gnu updated - rustc 1.55.0 (c8dfcfe04 2021-09-06) (from rustc 1.54.0 (a178d0322 2021-07-26))
  nightly-x86_64-unknown-linux-gnu updated - rustc 1.57.0-nightly (05044c2e6 2021-09-26) (from rustc 1.56.0-nightly (ae90dcf02 2021-08-09))

Output:

$ cargo install subkey                                                                                                                                                                               

    Updating crates.io index
  Installing subkey v2.0.1
error: failed to compile `subkey v2.0.1`, intermediate artifacts can be found at `/tmp/cargo-installLQeE0M`

Caused by:
  failed to select a version for `snow`.
      ... required by package `libp2p-noise v0.29.0`
      ... which satisfies dependency `libp2p-noise = "^0.29.0"` of package `libp2p v0.34.0`
      ... which satisfies dependency `libp2p = "^0.34.0"` of package `sc-cli v0.9.0`
      ... which satisfies dependency `sc-cli = "^0.9.0"` of package `subkey v2.0.1`
  versions that meet the requirements `^0.7.1` are: 0.7.2, 0.7.1

  all possible versions conflict with previously selected packages.

    previously selected package `snow v0.7.1`
      ... which satisfies dependency `snow = "^0.7.1"` of package `libp2p-noise v0.29.0`
      ... which satisfies dependency `libp2p-noise = "^0.29.0"` of package `libp2p v0.34.0`
      ... which satisfies dependency `libp2p = "^0.34.0"` of package `sc-cli v0.9.0`
      ... which satisfies dependency `sc-cli = "^0.9.0"` of package `subkey v2.0.1`

  failed to select a version for `snow` which could resolve this conflict

[bkchr]

You need to install it from git.

cargo install --git https://github.com/paritytech/substrate.git --locked subkey

[TriplEight]

Neither of the installation methods is mentioned in the manual

[bkchr]

Yeah than open a pr to add this please.