HyperionIDE

HyperionIDE is a small desktop IDE shell: a folder tree, tabbed text editor, and status bar. It is built on gpui-se, the standalone edition of Zed's GPUI.

gpui-se is a GPU-accelerated UI toolkit (entities, layout, text shaping, input, menus, file dialogs). It does not ship a code editor, syntax highlighter, language server client, or terminal. This app uses the toolkit's text system and EntityInputHandler for a real multi-line editor, and does not pretend to provide LSP or a terminal.

Dependency

• Repository: https://github.com/futureboard/gpui-se
• Package: gpui 0.2.2 (as published in that tree)
• Pinned commit: 5779e7325fc499906eb7aa19c9156f9dcb96a9cc

The crate is not on crates.io under this fork, so Cargo.toml depends on that git revision. gpui_platform comes from the same commit and selects the Linux Wayland/X11 backend.

Build and run

cargo build --release
cargo run --release --bin HyperionIDE

The window opens on the current working directory. cargo test covers the text buffer and the file-tree walker; those tests do not open a window.

A display is required. The process owns the GPUI event loop and does not have a headless GUI mode.

What you can do

• Browse the working folder. Directories expand in place. Refresh re-reads the tree.
• Open a file from the tree, or use File → Open File / Open Folder.
• Create an untitled buffer with File → New File.
• Edit text: caret, selection, word movement, clipboard, indent-aware Enter, Tab as four spaces.
• Undo and redo. History is a local snapshot stack (gpui-se has no editor undo).
• Save and close tabs. A dirty tab shows an amber mark and asks before it closes.
• Line endings are stored as LF. CRLF and CR are converted when a file is opened.

Shortcuts use the platform command key (Ctrl on Linux, ⌘ on macOS):

Action	Shortcut
Open File	Ctrl/⌘ O
Open Folder	Ctrl/⌘ Shift O
New File	Ctrl/⌘ N
Save	Ctrl/⌘ S
Close Tab	Ctrl/⌘ W
Quit	Ctrl/⌘ Q
Undo / Redo	Ctrl/⌘ Z, Ctrl/⌘ Shift Z

Home and End move within the line. On Linux, Ctrl+Left/Right moves by word; on macOS that is Option+Left/Right, and Command+Left/Right moves to the line edges.

Files larger than 8 MiB are refused. Syntax highlighting, LSP, and a terminal are not included.

Arch Linux packages

GPUI renders with Vulkan and talks to Wayland or X11. File dialogs go through the XDG desktop portal.

sudo pacman -S --needed \
  base-devel pkgconf fontconfig \
  wayland libxkbcommon libxkbcommon-x11 \
  libxcb xcb-util-wm \
  vulkan-icd-loader \
  xdg-desktop-portal xdg-desktop-portal-gtk

Install a Vulkan driver as well: vulkan-radeon, vulkan-intel, or mesa (including lavapipe) depending on the GPU. A monospace face such as ttf-jetbrains-mono or ttf-dejavu is used for the editor; the system UI font is the fallback.

This commit of gpui-se does not build on current crates.io without three small local patches, kept under vendor/:

• vendor/xattr is xattr 0.2.3 with one Linux fix. Current libc no longer exports ENOATTR, and gpui-se's HTTP client still pulls that crate through async-tar.
• vendor/accesskit_unix is accesskit_unix 0.22.0 (built against accesskit 0.24) with its package version set to 0.17.2, because gpui-se asks for accesskit_unix 0.17 while using accesskit 0.24.
• vendor/gpui_linux is the Linux backend from the pinned commit. File dialogs use url::Url, which is what ashpd 0.11 returns. The upstream file calls ashpd::Uri, a type that crate version does not export.