health, reflection: make rustfmt dependency optional (#785)

Co-authored-by: Lucio Franco <[email protected]>

tonic-health/Cargo.toml

@@ -15,8 +15,9 @@ categories = ["network-programming", "asynchronous"]
 keywords = ["rpc", "grpc", "async", "healthcheck"]
 
 [features]
-default = ["transport"]
-transport = ["tonic/transport"]
+default = ["transport", "rustfmt"]
+transport = ["tonic/transport", "tonic-build/transport"]
+rustfmt = ["tonic-build/rustfmt"]
 
 [dependencies]
 tokio = { version = "1.0", features = ["sync"] }
@@ -30,4 +31,4 @@ async-stream = "0.3"
 tokio = { version = "1.0", features = ["rt-multi-thread", "macros"]}
 
 [build-dependencies]
-tonic-build = { version = "0.6", path = "../tonic-build" }
+tonic-build = { version = "0.6", path = "../tonic-build", features = ["prost"] }

tonic-reflection/Cargo.toml

@@ -16,6 +16,10 @@ readme = "README.md"
 categories = ["network-programming", "asynchronous"]
 keywords = ["rpc", "grpc", "async", "reflection"]
 
+[features]
+default = ["rustfmt"]
+rustfmt = ["tonic-build/rustfmt"]
+
 [dependencies]
 bytes = "1.0"
 prost = "0.9"
@@ -25,7 +29,7 @@ tokio-stream = { version = "0.1", features = ["net"] }
 tonic = { version = "0.6", path = "../tonic", features = ["codegen", "prost"] }
 
 [build-dependencies]
-tonic-build = { version = "0.6", path = "../tonic-build" }
+tonic-build = { version = "0.6", path = "../tonic-build", features = ["transport", "prost"] }
 
 [dev-dependencies]
 futures = "0.3"