Eliminate a few more futures dependencies.

Cargo.lock

@@ -185,54 +185,12 @@ dependencies = [
  "new_debug_unreachable",
 ]
 
-[[package]]
-name = "futures"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9d5813545e459ad3ca1bff9915e9ad7f1a47dc6a91b627ce321d5863b7dd253"
-dependencies = [
- "futures-channel",
- "futures-core",
- "futures-executor",
- "futures-io",
- "futures-sink",
- "futures-task",
- "futures-util",
-]
-
-[[package]]
-name = "futures-channel"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ce79c6a52a299137a6013061e0cf0e688fce5d7f1bc60125f520912fdb29ec25"
-dependencies = [
- "futures-core",
- "futures-sink",
-]
-
 [[package]]
 name = "futures-core"
 version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "098cd1c6dda6ca01650f1a37a794245eb73181d0d4d4e955e2f3c37db7af1815"
 
-[[package]]
-name = "futures-executor"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10f6cb7042eda00f0049b1d2080aa4b93442997ee507eb3828e8bd7577f94c9d"
-dependencies = [
- "futures-core",
- "futures-task",
- "futures-util",
-]
-
-[[package]]
-name = "futures-io"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "365a1a1fb30ea1c03a830fdb2158f5236833ac81fa0ad12fe35b29cddc35cb04"
-
 [[package]]
 name = "futures-macro"
 version = "0.3.14"
@@ -245,12 +203,6 @@ dependencies = [
  "syn",
 ]
 
-[[package]]
-name = "futures-sink"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5c5629433c555de3d82861a7a4e3794a4c40040390907cfbfd7143a92a426c23"
-
 [[package]]
 name = "futures-task"
 version = "0.3.14"
@@ -263,13 +215,9 @@ version = "0.3.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c144ad54d60f23927f0a6b6d816e4271278b64f005ad65e4e35291d2de9c025"
 dependencies = [
- "futures-channel",
  "futures-core",
- "futures-io",
  "futures-macro",
- "futures-sink",
  "futures-task",
- "memchr",
  "pin-project-lite",
  "pin-utils",
  "proc-macro-hack",
@@ -405,7 +353,6 @@ version = "0.1.0"
 dependencies = [
  "anyhow",
  "crossterm",
- "futures-util",
  "helix-core",
  "helix-lsp",
  "once_cell",
@@ -491,11 +438,10 @@ dependencies = [
 
 [[package]]
 name = "jsonrpc-core"
-version = "17.0.0"
+version = "17.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
+source = "git+https://github.com/paritytech/jsonrpc#609d7a6cc160742d035510fa89fb424ccf077660"
-checksum = "07569945133257ff557eb37b015497104cea61a2c9edaf126c1cbd6e8332397f"
 dependencies = [
- "futures",
+ "futures-util",
  "log",
  "serde",
  "serde_derive",

helix-lsp/Cargo.toml

@@ -21,7 +21,8 @@ glob = "0.3"
 anyhow = "1"
 serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
-jsonrpc-core = "17.0"
+# jsonrpc-core = { version = "17.1", default-features = false } # don't pull in all of futures
-futures-util = "0.3"
+jsonrpc-core = { git = "https://github.com/paritytech/jsonrpc", default-features = false } # don't pull in all of futures
+futures-util = { version = "0.3", features = ["std", "async-await"] }
 thiserror = "1.0"
 log = "~0.4"

helix-term/Cargo.toml

@@ -25,7 +25,7 @@ tui = { version = "0.15", default-features = false, features = ["crossterm"] }
 crossterm = { version = "0.19", features = ["event-stream"] }
 clap = { version = "3.0.0-beta.2 ", default-features = false, features = ["std", "cargo"] }
 
-futures-util = "0.3"
+futures-util = { version = "0.3", features = ["std", "async-await"] }
 
 # Logging
 fern = "0.6"

helix-term/src/application.rs

@@ -23,7 +23,6 @@
 
 use tui::layout::Rect;
 
-// use futures_util::future::BoxFuture;
 use futures_util::stream::FuturesUnordered;
 use std::pin::Pin;
 
@@ -92,15 +91,16 @@ pub async fn event_loop(&mut self) {
                 break;
             }
 
-            use futures_util::{select, FutureExt, StreamExt};
+            use futures_util::StreamExt;
-            select! {
+
-                event = reader.next().fuse() => {
+            tokio::select! {
+                event = reader.next() => {
                     self.handle_terminal_events(event)
                 }
-                call = futures_util::StreamExt::select_next_some(&mut self.editor.language_servers.incoming) => {
+                Some(call) = self.editor.language_servers.incoming.next() => {
                     self.handle_language_server_message(call).await
                 }
-                callback = futures_util::StreamExt::select_next_some(&mut self.callbacks) => {
+                Some(callback) = &mut self.callbacks.next() => {
                     self.handle_language_server_callback(callback)
                 }
             }

helix-view/Cargo.toml

@@ -22,7 +22,6 @@ once_cell = "1.4"
 url = "2"
 
 tokio = { version = "1", features = ["full"] }
-futures-util = "0.3"
 
 slotmap = "1"