# What happens next

Everything in this directory is **unbuilt**. When a piece of it is finished it leaves — deleted from here,
rewritten as a description in [../architecture/](../architecture/). See
[the rule](../README.md#the-rule-that-keeps-this-from-rotting).

> ## Read [1.0.md](1.0.md) first.
>
> It draws the finish line, says where the system stands against it, and holds
> **[the register of unfinished work](1.0.md#the-freeze-and-the-register-of-unfinished-work)**
> — the one place anything half-built is listed. No new capability starts until that register is
> empty, and a row leaves it only by being finished or by being deleted from the tree.

---

## What is here

| | |
|---|---|
| **[1.0.md](1.0.md)** | **The finish line.** What 1.0 is, the acceptance test and where each clause stands, the register, and everything explicitly deferred. |
| **[roadmap.md](roadmap.md)** | Everything else that is scoped and agreed: storage and the installer, graphics, networking, the hardware that makes a laptop a laptop, SchFS beyond SchOS, the kernel's own gaps. |
| **[gpu.md](gpu.md)** | Linux's own `amdgpu` through LDLS, and the `/dev/dri` a process has to serve. Measured, with the work it needs written down. |
| **[finch.md](finch.md)** | **Later.** The author's own LLVM language for SchOS's applications and tools in place of C. The language is finished and self-hosting in its own repository; the plan here is a target, bindings generated from `include/uapi/`, and the compiler in the image. |
| **[schapi.md](schapi.md)** | The long-term API layering and the compatibility promise. Direction agreed, nothing built. |

## What used to be here, and is built

Plans leave this directory when they are done. These did, and what replaced them is the description:

| Was | Now |
|---|---|
| Descriptor passing, shared memory, sockets in the filesystem, dynamic linking, the event descriptors (`foundations.md`) | [kernel.md](../architecture/kernel.md), [networking.md](../architecture/networking.md), [syscalls.md](../architecture/syscalls.md) |
| `init.md` | [init.md](../architecture/init.md) |
| `hybrid.md` — drivers in processes, `/dev/pci`, a modeset API, the panic path, why USB stays | [devices.md](../architecture/devices.md) |
| `ldls.md` — Linux drivers in a process | [ldls.md](../architecture/ldls.md) |
| `debugger.md` | [debugging.md](../architecture/debugging.md) |
| `alpine.md` — an apk-managed root | [packages.md](../architecture/packages.md) |
| `xorg.md` — the desktop | [desktop.md](../architecture/desktop.md) |
| The interactive crash screen (`roadmap.md` §4) | GMMOS, in [graphics.md](../architecture/graphics.md) |

And one that was **decided against**: `wayland.md`. Wayland needs DRM/KMS, libinput, udev and libseat, and DRM/KMS
alone is a kernel graphics subsystem. The desktop is X. The reasoning moved to [desktop.md](../architecture/desktop.md).
`SchWM`, `SchDE` and the compositor `Schcom` are gone from the tree: SchOS uses other people's window manager and desktop — Window Maker
now; XLibre, Xorg or a Wayland compositor later — and puts its work into what they need underneath (udev, DRM).

---

## The order

Set by [1.0.md](1.0.md), which is the authority. **1.0 is reached** (a live system; persistence is not part of it).
What is left before anything new starts:

1. **Empty the register**: decide the unused in-kernel LDLS window (delete it, or use it), and build socket activation or
   remove the key.
2. **The owner's list** ([roadmap.md](roadmap.md)): the Wayland groundwork (udev first, §5), making LDLS good enough that the GPU
   driver can run ([gpu.md](gpu.md)), a boot manager worth looking at (§5b), then the installer, then Finch inside SchOS
   ([finch.md](finch.md)).

## What this plan does not address

Stated here so it is not mistaken for covered:

- **No IOMMU**, so a driver in a process is isolated against its own bugs and not against a hostile driver.
- **No page cache**, so a general writable `MAP_SHARED` of a file is refused; `memfd` is the narrow answer.
- **No installer**, so nothing a live system writes survives a reboot — by decision, for 1.0.