Only enable hyper dependency when needed (#2350)

axum/Cargo.toml

@@ -14,8 +14,8 @@ repository = "https://github.com/tokio-rs/axum"
 [features]
 default = ["form", "http1", "json", "matched-path", "original-uri", "query", "tokio", "tower-log"]
 form = ["dep:serde_urlencoded"]
-http1 = ["hyper/http1"]
-http2 = ["hyper/http2"]
+http1 = ["dep:hyper", "hyper?/http1"]
+http2 = ["dep:hyper", "hyper?/http2"]
 json = ["dep:serde_json", "dep:serde_path_to_error"]
 macros = ["dep:axum-macros"]
 matched-path = []
@@ -25,7 +25,7 @@ query = ["dep:serde_urlencoded"]
 tokio = ["dep:hyper-util", "dep:tokio", "tokio/net", "tokio/rt", "tower/make"]
 tower-log = ["tower/log"]
 tracing = ["dep:tracing", "axum-core/tracing"]
-ws = ["tokio", "dep:tokio-tungstenite", "dep:sha1", "dep:base64"]
+ws = ["dep:hyper", "tokio", "dep:tokio-tungstenite", "dep:sha1", "dep:base64"]
 
 # Required for intra-doc links to resolve correctly
 __private_docs = ["tower/full", "dep:tower-http"]
@@ -38,7 +38,6 @@ futures-util = { version = "0.3", default-features = false, features = ["alloc"]
 http = "1.0.0"
 http-body = "1.0.0"
 http-body-util = "0.1.0"
-hyper = { package = "hyper", version = "1.0.0", features = ["server", "http1"] }
 itoa = "1.0.5"
 matchit = "0.7"
 memchr = "2.4.1"
@@ -54,6 +53,7 @@ tower-service = "0.3"
 # optional dependencies
 axum-macros = { path = "../axum-macros", version = "0.3.7", optional = true }
 base64 = { version = "0.21.0", optional = true }
+hyper = { version = "1.0.0", optional = true }
 hyper-util = { version = "0.1.1", features = ["tokio", "server", "server-auto"], optional = true }
 multer = { version = "2.0.0", optional = true }
 serde_json = { version = "1.0", features = ["raw_value"], optional = true }