doc: Show required features on docs.rs

Author: LukeMathWalker

libs/pavex/src/lib.rs

@@ -1,3 +1,4 @@
+#![cfg_attr(docsrs, feature(doc_cfg))]
 //! # Pavex - API reference
 //!
 //! Welcome to the API reference for Pavex!
@@ -16,9 +17,11 @@ pub use response::{into_response::IntoResponse, response_::Response};
 
 pub mod blueprint;
 #[cfg(feature = "config")]
+#[cfg_attr(docsrs, doc(cfg(feature = "config")))]
 pub mod config;
 pub mod connection;
 #[cfg(feature = "cookie")]
+#[cfg_attr(docsrs, doc(cfg(feature = "cookie")))]
 pub mod cookie;
 pub mod error;
 pub mod http;
@@ -28,10 +31,12 @@ pub mod response;
 pub mod router;
 pub mod serialization;
 #[cfg(feature = "server")]
+#[cfg_attr(docsrs, doc(cfg(feature = "server")))]
 pub mod server;
 pub mod telemetry;
 pub mod unit;
 #[cfg(feature = "time")]
+#[cfg_attr(docsrs, doc(cfg(feature = "time")))]
 pub mod time {
     //! Utilities to work with dates, timestamps and datetimes.
     //!

libs/pavex/src/telemetry/mod.rs

@@ -1,6 +1,8 @@
 //! Tools to instrument and troubleshoot your Pavex applications.
 #[cfg(feature = "server_request_id")]
+#[cfg_attr(docsrs, doc(cfg(feature = "server_request_id")))]
 mod server_request_id;
 
 #[cfg(feature = "server_request_id")]
+#[cfg_attr(docsrs, doc(cfg(feature = "server_request_id")))]
 pub use server_request_id::ServerRequestId;

libs/pavex/src/tls/client/mod.rs

@@ -6,4 +6,5 @@ pub mod config;
 pub use config::_config::TlsClientPolicyConfig;
 
 #[cfg(feature = "rustls_0_23")]
+#[cfg_attr(docsrs, doc(cfg(feature = "rustls_0_23")))]
 mod rustls_0_23;

libs/pavex/src/tls/client/rustls_0_23.rs

@@ -30,11 +30,12 @@ impl TryFrom<&TlsClientPolicyConfig> for ClientConfig {
 
 #[derive(Debug, thiserror::Error)]
 #[error(transparent)]
-/// The error that can occur in [`TlsClientPolicyConfig::rustls_0_23_config`] when building a `rustls::ClientConfig`.
+/// The error that can occur in [`TlsClientPolicyConfig::rustls_0_23_config`] when building a
+/// [`rustls::ClientConfig`](https://docs.rs/rustls/0.23/rustls/client/struct.ClientConfig.html).
 pub struct Rustls023ConfigError(anyhow::Error);
 
 impl TlsClientPolicyConfig {
-    /// Build a [`rustls::ClientConfig`] according to the specified configuration.
+    /// Build a [`rustls::ClientConfig`](https://docs.rs/rustls/0.23/rustls/client/struct.ClientConfig.html) according to the specified configuration.
     pub fn rustls_0_23_config(&self) -> Result<ClientConfig, Rustls023ConfigError> {
         fn _config(policy: &TlsClientPolicyConfig) -> Result<ClientConfig, anyhow::Error> {
             let provider = Arc::new(crypto_provider(&policy.crypto_provider)?);