nimtui

nimtui

Live system dashboard built with loom, the reactive TUI framework for Nim.

One command, one zero-dependency native binary — a full terminal dashboard showing what the framework does: reactive signals, flex layout, a declarative macro DSL, mouse support, themes, and diffed rendering.

• live process table (keyed selection — stays on your process while the list re-sorts)
• type-to-filter with an autofocused input
• load + memory gauges, history sparkline, scrolling log
• tabs, scrollable help viewport, wide-glyph (CJK/emoji) rendering

Install

npm install -g nimtui
nimtui

or just try it:

npx nimtui

This installs a prebuilt native binary (the framework and dashboard are written in Nim; the binary links only libSystem).

Keys

key	action
q	quit
tab	cycle focus (the filter starts focused)
↑/↓, click, wheel, drag	select processes
←/→	switch tabs
t	cycle themes (default → neon → mono)
m	toggle mouse capture (off = terminal text selection works)

The framework

The dashboard is ~100 lines of view code. The interesting part is loom itself — signals with automatic dependency tracking, a tui: macro where plain Nim control flow builds the widget tree, and cell-diffed ANSI output:

let cpu = signal(0.42)

proc view(): Widget =
  tui:
    vbox:
      panel(title = "stats", height = fixed(3)):
        gauge(cpu.get, label = "cpu")

Docs and source: https://github.com/adamsjack711-ux/NimTui

Platform support

Prebuilt binaries for macOS (arm64, x64) and Linux (arm64, x64 — static musl, runs anywhere). Other platforms can build from source with nim (nimble demo in the repo) and set NIMTUI_BIN to the built binary.

License

MIT