ssh-key: temporarily remove ed25519 feature

This makes it possible to publish a prerelease, which we otherwise can't
do since we're sourcing `ed25519-dalek` from this git branch:

dalek-cryptography/curve25519-dalek#676

This commit can be reverted immediately after we publish a crate
release.

Cargo.toml

@@ -13,4 +13,4 @@ opt-level = 2
 
 [patch.crates-io]
 # https://github.com/dalek-cryptography/curve25519-dalek/pull/676
-ed25519-dalek = { git = "https://github.com/dalek-cryptography/curve25519-dalek.git", branch = "rustcrypto-new-releases" }
+#ed25519-dalek = { git = "https://github.com/dalek-cryptography/curve25519-dalek.git", branch = "rustcrypto-new-releases" }

ssh-key/Cargo.toml

@@ -29,7 +29,7 @@ zeroize = { version = "1", default-features = false }
 bcrypt-pbkdf = { version = "=0.11.0-pre.1", optional = true, default-features = false, features = ["alloc"] }
 bigint = { package = "num-bigint-dig", version = "0.8", optional = true, default-features = false }
 dsa = { version = "=0.7.0-pre.0", optional = true, default-features = false }
-ed25519-dalek = { version = "=2.2.0-pre", optional = true, default-features = false }
+#ed25519-dalek = { version = "=2.2.0-pre", optional = true, default-features = false }
 p256 = { version = "=0.14.0-pre.1", optional = true, default-features = false, features = ["ecdsa"] }
 p384 = { version = "=0.14.0-pre.1", optional = true, default-features = false, features = ["ecdsa"] }
 p521 = { version = "=0.14.0-pre.1", optional = true, default-features = false, features = ["ecdsa"] }
@@ -61,10 +61,10 @@ std = [
     "signature/std"
 ]
 
-crypto = ["ed25519", "p256", "p384", "p521", "rsa"] # NOTE: `dsa` is obsolete/weak
+crypto = ["p256", "p384", "p521", "rsa"] # ... "ed25519"] NOTE: `dsa` is obsolete/weak
 dsa = ["dep:bigint", "dep:dsa", "dep:sha1", "alloc", "signature/rand_core"]
 ecdsa = ["dep:sec1"]
-ed25519 = ["dep:ed25519-dalek", "rand_core"]
+#ed25519 = ["dep:ed25519-dalek", "rand_core"]
 encryption = [
     "dep:bcrypt-pbkdf",
     "alloc",

ssh-key/src/lib.rs

@@ -5,6 +5,7 @@
     html_logo_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg",
     html_favicon_url = "https://raw.githubusercontent.com/RustCrypto/media/6ee8e381/logo.svg"
 )]
+#![allow(unexpected_cfgs)] // `ed25519` is temporarily disabled
 #![forbid(unsafe_code)]
 #![warn(
     clippy::alloc_instead_of_core,

ssh-key/tests/certificate.rs

@@ -1,6 +1,7 @@
 //! OpenSSH certificate tests.
 
 #![cfg(feature = "alloc")]
+#![allow(unexpected_cfgs)] // `ed25519` is temporarily disabled
 
 use hex_literal::hex;
 use ssh_key::{Algorithm, Certificate};

ssh-key/tests/certificate_builder.rs

@@ -5,6 +5,7 @@
     feature = "rand_core",
     any(feature = "ed25519", feature = "p256")
 ))]
+#![allow(unexpected_cfgs)] // `ed25519` is temporarily disabled
 
 use hex_literal::hex;
 use rand_chacha::{rand_core::SeedableRng, ChaCha8Rng};

ssh-key/tests/sshsig.rs

@@ -1,6 +1,7 @@
 //! `sshsig` signature tests.
 
 #![cfg(feature = "alloc")]
+#![allow(unexpected_cfgs)] // `ed25519` is temporarily disabled
 
 use hex_literal::hex;
 use ssh_key::{Algorithm, HashAlg, LineEnding, PublicKey, SshSig};