ln: gate rustix dependency to wasi target

Author: DePasqualeOrg

src/uu/ln/Cargo.toml

@@ -21,11 +21,13 @@ doctest = false
 
 [dependencies]
 clap = { workspace = true }
-rustix = { workspace = true, features = ["fs"] }
 uucore = { workspace = true, features = ["backup-control", "fs"] }
 thiserror = { workspace = true }
 fluent = { workspace = true }
 
+[target.'cfg(target_os = "wasi")'.dependencies]
+rustix = { workspace = true, features = ["fs"] }
+
 [[bin]]
 name = "ln"
 path = "src/main.rs"