This release is a pre-release and may not be stable for production use.
lazy-cuh
lazy-cuh is an experimental Python framework for building lazygit-style
terminal user interfaces on top of Textual.
It provides reusable building blocks for terminal apps that need pane-based navigation, compact key hints, modal flows, and list/tree content that behaves consistently.
Status
Pre-alpha. The package is useful for experimentation and early dogfooding, but APIs are expected to change before a stable release.
Features
- bordered panels with numbered titles and tabs
- vim-like item navigation and optional line numbers
- reusable list, tree, text, and option-style views
- contextual keybars and expandable help hints
- confirm, input, info, and notice models
- action, command, and keybinding primitives
- clear separation between app state, rendering, navigation, viewport, and Textual widget adapters
Installation
pip install lazy-cuh
Pre-release versions may need:
pip install --pre lazy-cuh
Quick Example
from rich.text import Text
import lazy_cuh as lc
items = (
lc.core.NavigableItem(id="panels", label=Text("Composable panels and tabs")),
lc.core.NavigableItem(id="navigation", label=Text("Vim-style item navigation")),
lc.core.NavigableItem(id="keybars", label=Text("Context-aware keybars")),
)
view = lc.view.ListViewModel(
items=items,
cursor_index=1,
spec=lc.view.ListViewSpec(
width=60,
line_numbers=lc.layout.LineNumberSpec(lc.layout.LineNumberMode.RELATIVE),
),
)
for line in view.rendered_lines():
print(line.plain)
Examples
After installing from source, run the interactive demo:
uv run lazy-cuh-demo
Focused examples are also available:
uv run lazy-cuh-example-app-shell
uv run lazy-cuh-example-text-wrap
uv run lazy-cuh-example-help-modal
uv run lazy-cuh-example-help-keybar
uv run lazy-cuh-example-options
Documentation
The documentation lives in docs/ and is built with Astro Starlight. Start
with the quick start for a minimal view, then use the app-structure guide for
the recommended full-app composition path. The docs also cover lists, trees,
panels, keybars, modals, and Textual adapters.
Development
For local development:
uv sync --extra dev --extra release
uv run pytest
uv run pyright
uv run ruff check .
Nix users can enter the packaged development shell with:
nix develop
1 maintainer
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