nixjit/TODO.md

• downgrade stage
• resolve stage
  • dynamic attr resolution
  • import resolution
    • static path resolution
• eval stage
  • dynamic path resolution
  • graph update
  • stack storage

依赖类型：

1. 强依赖 (x!)

• builtins.toString x => x!
• x + y => x! y!
• { x = 1; ${sym} = 2; } => sym!

2. 弱依赖 a.k.a. thunk (x?)

• builtins.seq x y => x! y?

3. 递归依赖 (x!!)

• builtins.deepSeq x y => x!! y?

e.g.

• let a? = { inherit a?; }; in a! => a!
  • a! => { a = }
• f: let x? = f! x?; in x! => f! x!
• let ret? = (self: { x? = 1; y? = self.x! + 1; }) ret?; in ret.y! => ret! x! y!

工作流程：

1. string -> AST
2. AST -> HIR (alloc ExprId)
3. HIR -> LIR (resolve var, build graph)
4. LIR -> Value