feat: usable?

Cargo.toml

@@ -3,7 +3,10 @@ name = "nixjit"
 version = "0.0.0"
 edition = "2024"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[profile.perf]
+opt-level = 3
+debug = 1
+inherits = "dev"
 
 [dependencies]
 rnix = "0.11"
@@ -16,3 +19,5 @@ derive_more = { version = "2.0", features = [ "full" ] }
 crossbeam-channel = "0.5"
 ecow = "0.2"
 once_cell = "1.19"
+
+rustyline = "15.0"