Disable default features on futures-util to drop proc macros.

Cargo.lock

@@ -202,18 +202,6 @@ dependencies = [
  "futures-util",
 ]
 
-[[package]]
-name = "futures-macro"
-version = "0.3.14"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "668c6733a182cd7deb4f1de7ba3bf2120823835b3bcfbeacf7d2c4a773c1bb8b"
-dependencies = [
- "proc-macro-hack",
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "futures-task"
 version = "0.3.14"
@@ -227,12 +215,9 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "3c144ad54d60f23927f0a6b6d816e4271278b64f005ad65e4e35291d2de9c025"
 dependencies = [
  "futures-core",
- "futures-macro",
  "futures-task",
  "pin-project-lite",
  "pin-utils",
- "proc-macro-hack",
- "proc-macro-nested",
  "slab",
 ]
 
@@ -648,18 +633,6 @@ version = "0.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8b870d8c151b6f2fb93e84a13146138f05d02ed11c7e7c54f8826aaaf7c9f184"
 
-[[package]]
-name = "proc-macro-hack"
-version = "0.5.19"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dbf0c48bc1d91375ae5c3cd81e3722dff1abcf81a30960240640d223f59fe0e5"
-
-[[package]]
-name = "proc-macro-nested"
-version = "0.1.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bc881b2c22681370c6a780e47af9840ef841837bc98118431d4e1868bd0c1086"
-
 [[package]]
 name = "proc-macro2"
 version = "1.0.26"

helix-lsp/Cargo.toml

@@ -24,6 +24,6 @@ serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 # jsonrpc-core = { version = "17.1", default-features = false } # don't pull in all of futures
 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"] }
+futures-util = { version = "0.3", features = ["std", "async-await"], default-features = false }
 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 = { version = "0.3", features = ["std", "async-await"] }
+futures-util = { version = "0.3", features = ["std", "async-await"], default-features = false }
 
 # Logging
 fern = "0.6"