kryofetch

A cross-platform system information fetch tool written in Krypton — a self-hosting language that compiles to machine code.

Krypton 2.0 only. Windows MacOS Tahoe

INSTALL

macOS

Install with Homebrew (recommended)

brew tap t3m3d/kryofetch
brew install kryofetch

Then just run:

kryofetch

Build from source

Requires the Krypton compiler installed. Download the latest krypton-2.0-macos-arm64.pkg from the Krypton releases page and install it, then:

git clone https://github.com/t3m3d/kryofetch
cd kryofetch
/usr/local/krypton/kcc.sh --gcc run_macos.k -o kryofetch
./kryofetch

macOS requirements

• macOS Sequoia or Tahoe, Apple Silicon (arm64)
• Xcode Command Line Tools (xcode-select --install) — needed once to build the Krypton C bridge

macOS source files

The macOS implementation lives in the *_macos.k files alongside the Windows sources. The Windows build is unaffected.

File	Purpose
run_macos.k	Entry point — imports all macOS modules
os_macos.k	OS version, uptime, shell, terminal, theme, battery, resolution
cpu_macos.k	CPU brand and core counts via sysctl
mem_macos.k	RAM total and free via hw.memsize + vm_stat
disk_macos.k	Disk usage via df (Data volume + external drives)
gpu_macos.k	GPU name and VRAM via system_profiler
utils_macos.k	Shared string helpers, bar renderer, package count

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Windows

Run

kryofetch.exe              # one-shot render
kryofetch.exe --watch      # live re-render every 1000 ms
kryofetch.exe --watch 500  # custom interval (ms)

In --watch mode kryofetch calls gcCollect() (2.0 mark+sweep) after each render so unreachable allocations are reclaimed and the working set stays bounded.

Build

build.bat

Native PE/COFF via the Krypton compiler's Windows backend (x64.k). No gcc, no MinGW, no MSVC. Produces kryofetch.exe alongside a freshly-copied krypton_rt.dll.

Expects the Krypton repo cloned side-by-side as ..\krypton.

Windows requirements

• Windows 10 / 11
• Krypton 2.0 repo cloned to ..\krypton (sibling directory)
• C:\krypton\bin\x64_host_new.exe in lockstep with ..\krypton\compiler\windows_x86\x64_host.exe

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Notes

The 2.0 ABI break (per-allocation 16-byte GC headers + Win32 marshalling) is incompatible with 1.x runtimes.

kryofetch is short-running (one shot, prints, exits) so it doesn't need to call gcCollect() explicitly on Windows. The Krypton 2.0 mark-sweep GC machinery is present but stays inert until program exit, when the OS reclaims the slabs all at once.