Add native-tls feature for musl build compatibility

- Add `native-tls` feature (enabled by default) for backwards compatibility
- Disable reqwest/rabbitmq_http_client default features, enable explicitly
- Update musl build script to use --no-default-features (rustls-only)
- This avoids OpenSSL dependency on musl targets

Author: michaelklishin

Cargo.lock

@@ -6,20 +6,31 @@ repository = "https://github.com/rabbitmq/rabbitmqadmin-ng"
 description = "rabbitmqadmin v2 is a modern CLI tool for the RabbitMQ HTTP API"
 license = "MIT OR Apache-2.0"
 
+[features]
+default = ["native-tls"]
+# native-tls: Uses platform-native TLS (SecureTransport/SChannel/OpenSSL) alongside rustls.
+# Disable this feature for musl builds to avoid OpenSSL dependency.
+native-tls = ["reqwest/default-tls", "rabbitmq_http_client/default-tls"]
+
 [dependencies]
 clap = { version = "4", features = ["help", "color", "cargo", "env"] }
 url = "2"
 sysexits = "0.10"
-reqwest = { version = "0.12", features = [
+# reqwest: disable defaults to control TLS features explicitly.
+# Base features always included; native-tls added via the native-tls feature above.
+reqwest = { version = "0.12", default-features = false, features = [
     "blocking",
     "json",
     "multipart",
-    "__rustls",
+    "http2",
+    "charset",
+    "macos-system-configuration",
     "rustls-tls-native-roots",
 ] }
-rabbitmq_http_client = { version = "0.71.0", features = [
+rabbitmq_http_client = { version = "0.71.0", default-features = false, features = [
     "blocking",
     "tabled",
+    "rustls-tls",
 ] }
 serde = { version = "1.0", features = ["derive", "std"] }
 serde_json = "1"

Cargo.toml

@@ -93,5 +93,6 @@ def 'build-with-cargo' [] {
 
 def 'build-static-with-cargo' [] {
   $env.RUSTFLAGS = '-C target-feature=+crt-static'
-  cargo rustc --bin $binary --target $target --release
+  # Disable native-tls feature for musl builds (no OpenSSL dependency)
+  cargo rustc --bin $binary --target $target --release --no-default-features
 }