wasmtime-wasi: re-export wasi-cap-std-sync

Cargo.lock

@@ -3513,6 +3513,7 @@ name = "wasmtime-wasi"
 version = "0.25.0"
 dependencies = [
  "anyhow",
+ "wasi-cap-std-sync",
  "wasi-common",
  "wasmtime",
  "wasmtime-wiggle",

crates/wasi/Cargo.toml

@@ -14,7 +14,12 @@ build = "build.rs"
 
 [dependencies]
 wasi-common = { path = "../wasi-common", version = "0.25.0" }
+wasi-cap-std-sync = { path = "../wasi-common/cap-std-sync", version = "0.25.0", optional = true }
 wiggle = { path = "../wiggle", default-features = false, version = "0.25.0" }
 wasmtime-wiggle = { path = "../wiggle/wasmtime", default-features = false, version = "0.25.0" }
 wasmtime = { path = "../wasmtime", default-features = false, version = "0.25.0" }
 anyhow = "1.0"
+
+[features]
+default = ["sync"]
+sync = ["wasi-cap-std-sync"]

crates/wasi/src/lib.rs

@@ -12,6 +12,14 @@ use std::rc::Rc;
 pub use wasi_common::{Error, WasiCtx, WasiCtxBuilder, WasiDir, WasiFile};
 use wasmtime::{Config, Linker, Store};
 
+/// Re-export the commonly used wasi-cap-std-sync crate here. This saves
+/// consumers of this library from having to keep additional dependencies
+/// in sync.
+#[cfg(feature = "sync")]
+pub mod sync {
+    pub use wasi_cap_std_sync::*;
+}
+
 /// An instantiated instance of all available wasi exports. Presently includes
 /// both the "preview1" snapshot and the "unstable" (preview0) snapshot.
 pub struct Wasi {