cli: Fix rustls crypto provider error (#2103)

Author: svix-jplatte

svix-cli/Cargo.lock

@@ -46,6 +46,7 @@ indoc = "2.0.5"
 open = "5.3.1"
 rand = "0.8.5"
 reqwest = { version = "0.12.9", features = ["rustls-tls", "json", "charset", "http2", "macos-system-configuration"], default-features = false }
+rustls = "0.23.34"
 serde = { version = "1.0.215", features = ["derive"] }
 serde_json = "1.0.133"
 svix = { path = "../rust" }

svix-cli/Cargo.toml

@@ -99,6 +99,12 @@ enum RootCommands {
 async fn main() -> Result<()> {
     let cli = Cli::parse();
     let color_mode = cli.color_mode();
+
+    // rustls requires a crypto backend ("provider") choice to be made explicitly
+    // The Svix SDK uses the default provider if a default is not installed, but
+    // we use reqwest directly in some code paths, which does not do this.
+    _ = rustls::crypto::aws_lc_rs::default_provider().install_default();
+
     // XXX: cfg can give an Err in certain situations.
     // Assigning the variable here since several match arms need a `&Config` but the rest of them
     // won't care/are still usable if the config doesn't exist.