This is a great line.

constexpr and std::execution seem like neat ideas, maybe I'll give them a shot if I build an AI harness around the compiler so it doesn't make me feel like a hopeless idiot for trying new things.

This does not look like a productive way to get things done.

    constexpr std::vector<int> f() { return {1,2,3}; }
    constinit std::vector<int> p = f(); // error

    const(int)[] f() { return [1,2,3]; }
    immutable int[] aaa = f();

    internal:
        db      001h,000h,000h,000h,002h,000h,000h,000h ;........
        db      003h,000h,000h,000h,000h,000h,000h,000h ;........
    __D5test63aaayAi:
        db      003h,000h,000h,000h,000h,000h,000h,000h ;........
        db      000h,000h,000h,000h,000h,000h,000h,000h ;........