Make C-API and Wasi dependencies more lean

lib/c-api/Cargo.toml

@@ -22,7 +22,7 @@ crate-type = ["cdylib", "rlib", "staticlib"]
 [dependencies]
 # We rename `wasmer` to `wasmer-api` to avoid the conflict with this
 # library name (see `[lib]`).
-wasmer-api = { version = "2.1.0", path = "../api", default-features = false, package = "wasmer" }
+wasmer-api = { version = "2.1.0", path = "../api", default-features = false, features = ["sys"], package = "wasmer" }
 wasmer-compiler-cranelift = { version = "2.1.0", path = "../compiler-cranelift", optional = true }
 wasmer-compiler-singlepass = { version = "2.1.0", path = "../compiler-singlepass", optional = true }
 wasmer-compiler-llvm = { version = "2.1.0", path = "../compiler-llvm", optional = true }
@@ -32,7 +32,7 @@ wasmer-engine-universal = { version = "2.1.0", path = "../engine-universal", opt
 wasmer-engine-dylib = { version = "2.1.0", path = "../engine-dylib", optional = true }
 wasmer-engine-staticlib = { version = "2.1.0", path = "../engine-staticlib", optional = true }
 wasmer-middlewares = { version = "2.1.0", path = "../middlewares", optional = true }
-wasmer-wasi = { version = "2.1.0", path = "../wasi", optional = true }
+wasmer-wasi = { version = "2.1.0", path = "../wasi", default-features = false, features = ["host-fs", "sys"], optional = true }
 wasmer-types = { version = "2.1.0", path = "../types" }
 enumset = "1.0"
 cfg-if = "1.0"
@@ -56,7 +56,7 @@ default = [
     "middlewares",
 ]
 wat = ["wasmer-api/wat"]
-wasi = ["wasmer-wasi", "typetag", "serde"]
+wasi = ["wasmer-wasi"]
 engine = []
 middlewares = [
     "compiler",

lib/wasi/Cargo.toml

@@ -42,8 +42,8 @@ tracing-wasm = "0.2"
 [features]
 default = ["sys-default"]
 
-sys = ["wasmer/sys-default"]
-sys-default = ["sys", "logging", "host-fs"]
+sys = ["wasmer/sys"]
+sys-default = ["wasmer/sys-default", "sys", "logging", "host-fs"]
 
 js = ["wasmer/js", "mem-fs", "wasmer-vfs/no-time", "getrandom/js"]
 js-default = ["js", "wasmer/js-default"]