*: Import libp2p with default-features = false (#2574)

* *: Import `libp2p` with `default-features = false`

While not a win in most cases, it reduces compile time for tests of
individual crates.

* Cargo.toml: Set features for examples

Cargo.toml

@@ -152,6 +152,22 @@ members = [
     "transports/wasm-ext"
 ]
 
+[[example]]
+name = "chat"
+required-features = ["floodsub"]
+
 [[example]]
 name = "chat-tokio"
 required-features = ["tcp-tokio", "mdns"]
+
+[[example]]
+name = "file-sharing"
+required-features = ["request-response"]
+
+[[example]]
+name = "gossipsub-chat"
+required-features = ["gossipsub"]
+
+[[example]]
+name = "ipfs-private"
+required-features = ["gossipsub"]

misc/metrics/Cargo.toml

@@ -35,6 +35,6 @@ libp2p-gossipsub =  { version = "0.37.0", path = "../../protocols/gossipsub", op
 log = "0.4.0"
 env_logger = "0.8.1"
 futures = "0.3.1"
-libp2p = { path = "../../", features = ["metrics"] }
+libp2p = { path = "../../", default-features = false, features = ["metrics", "ping", "tcp-async-io", "dns-async-std", "websocket", "noise", "mplex", "yamux"] }
 hyper = { version="0.14", features = ["server", "tcp", "http1"] }
 tokio = { version = "1", features = ["rt-multi-thread"] }

protocols/dcutr/Cargo.toml

@@ -30,7 +30,7 @@ prost-build = "0.9"
 
 [dev-dependencies]
 env_logger = "0.8.3"
-libp2p = { path = "../..", features = ["dcutr"] }
+libp2p = { path = "../..", default-features = false,  features = ["dcutr", "relay", "plaintext", "identify", "tcp-async-io", "ping", "noise", "dns-async-std"] }
 libp2p-identify = { path = "../identify" }
 libp2p-plaintext = { path = "../../transports/plaintext" }
 libp2p-relay = { path = "../relay" }

protocols/mdns/Cargo.toml

@@ -28,5 +28,5 @@ void = "1.0.2"
 [dev-dependencies]
 async-std = { version = "1.9.0", features = ["attributes"] }
 env_logger = "0.9.0"
-libp2p = { path = "../.." }
+libp2p = { path = "../..", default-features = false, features = ["mdns", "tcp-async-io", "dns-async-std", "websocket", "noise", "mplex", "yamux"] }
 tokio = { version = "1.15", default-features = false, features = ["macros", "rt", "rt-multi-thread", "time"] }

protocols/relay/Cargo.toml

@@ -34,7 +34,7 @@ prost-build = "0.9"
 
 [dev-dependencies]
 env_logger = "0.9.0"
-libp2p = { path = "../.." }
+libp2p = { path = "../..", default-features = false, features = ["identify", "relay", "ping", "noise", "plaintext", "tcp-async-io"] }
 libp2p-identify = { path = "../identify" }
 libp2p-kad = { path = "../kad" }
 libp2p-ping = { path = "../ping" }

protocols/rendezvous/Cargo.toml

@@ -29,7 +29,7 @@ instant = "0.1.11"
 [dev-dependencies]
 async-trait = "0.1"
 env_logger = "0.8"
-libp2p = { path = "../.." }
+libp2p = { path = "../..", default-features = false, features = ["ping", "identify", "tcp-async-io", "dns-async-std", "websocket", "noise", "mplex", "yamux", "rendezvous"] }
 rand = "0.8"
 tokio = { version = "1.15", features = [ "rt-multi-thread", "time", "macros", "sync", "process", "fs", "net" ] }
 

swarm-derive/Cargo.toml

@@ -18,6 +18,6 @@ syn = { version = "1.0.8", default-features = false, features = ["clone-impls",
 quote = "1.0"
 
 [dev-dependencies]
-libp2p = { path = "../" }
+libp2p = { path = "../", default-features = false, features = ["ping", "identify", "kad"] }
 either = "1.6.0"
 futures = "0.3.1"