Platform-specific dependencies

Author: danog

Cargo.toml

@@ -18,6 +18,8 @@ cfg-if = "1.0"
 once_cell = "1.17"
 anyhow = { version = "1", optional = true }
 ext-php-rs-derive = { version = "=0.10.1", path = "./crates/macros" }
+
+[target.'cfg(linux)'.dependencies]
 php-tokio = { version = "=0.1.4", optional = true }
 
 [dev-dependencies]