OmniScript — very very very simple

A tiny programming language. One C binary, no dependencies.

import draw
import cmd
import pathlib

Three modules, Python-like imports.

Install — OS integrated, type omni and it reacts, runs files

Windows — EXE (Inno Setup) — works like git CLI

installer\windows\build.bat

How git CLI works (researched): Git installer requires admin, adds C:\Program Files\Git\cmd to BOTH SYSTEM and USER PATH via registry + setx, broadcasts WM_SETTINGCHANGE, copies wrapper to location always in PATH. After install, reopen terminal, then git --version works in CMD/PowerShell/Terminal/Git Bash.

Omni 1.0.3 does same:

• PrivilegesRequired=admin, adds C:\Program Files\OmniScript to SYSTEM+USER PATH always, setx /M + PowerShell SetEnvironmentVariable, broadcast WM_SETTINGCHANGE
• Fallback copies to C:\Windows\omni.exe, C:\Windows\System32\omni.exe, %LOCALAPPDATA%\Microsoft\WindowsApps\omni.exe (always in PATH like python), plus omni.bat wrappers
• App Paths registry + .omni file association double-click runs file
• Includes fix-path.ps1 like git troubleshooting

Output: dist/OmniScript-1.0.3-Windows-x86_64-Setup.exe

After install, REOPEN terminal (CMD, PowerShell, Windows Terminal, Git Bash, VS Code terminal all work), then it reacts:

omni --version
omni
omni examples\01_hello.omni
omni myfile.omni
omni -e "import draw; draw.window(200,100); draw.rect(0,0,50,50,\"red\"); draw.show()"

If 'omni' is not recognized (old 1.0.0/1.0.1):

"C:\Program Files\OmniScript\omni.exe" --version
powershell -ExecutionPolicy Bypass -File "C:\Program Files\OmniScript\fix-path.ps1"
:: reopen terminal
omni --version

Or install 1.0.3 — works like git.

macOS — DMG + PKG

./installer/macos/build-dmg.sh
# Drag OmniScript.app to Applications
# Double-click Install CLI.command inside DMG
omni --version
omni examples/01_hello.omni

Linux — DEB + RPM

sudo dpkg -i dist/omniscript_1.0.3_amd64.deb
sudo rpm -i dist/omniscript-1.0.3-1.x86_64.rpm
omni --version
omni examples/01_hello.omni

All

./installer/build-all.sh
make dist

How to run files — researched and tested

OmniScript binary (src/main.c) supports:

omni FILE              # run script file
omni -e "CODE"         # run one-liner
omni --version
omni --help
omni                   # REPL, type help, exit

Windows tested:

• omni examples\01_hello.omni — runs file, shows GUI or writes BMP
• omni myfile.omni — any .omni file, path with spaces needs quotes: omni "C:\My Files\test.omni"
• Double-click .omni file → runs via file association (HKCR\.omni → OmniScriptFile → "{app}\omni.exe" "%1")
• omni -e "import cmd; cmd.run(\"dir\")" — runs command

All terminals work: CMD, PowerShell, Windows Terminal, Git Bash, VS Code terminal — after reopen.

Hello World

hello.omni:

import draw
import cmd
import pathlib

draw.window(640, 400, "Demo")
draw.rect(0, 0, 640, 60, "#161b22")
draw.text(20, 20, "Hello, OmniScript", "white", 18)
draw.circle(320, 220, 80, "blue")
draw.button(20, 300, 140, 36, "List files", action="ls -la")
draw.show()

cmd.run("echo hi")
pathlib.write("hi.txt", "hello")
print(pathlib.read("hi.txt"))

omni hello.omni
omni -e "import pathlib; print(pathlib.read(\"hi.txt\"))"

Language

import draw, cmd, pathlib
from draw import window, rect
x = 123
print("hi", x)

• newline or ; separates statements, = assign, a.b attr, f(1,2,key=val) call, (1,2) tuple

Modules

• draw: window, rect, circle, line, text, button, save, show, clear
• cmd: run, bg
• pathlib: read/write/exists/mkdir/list/delete + Path object

Structure

src/omni.h, lex.c, parse.c, eval.c, draw.c, gui_*.c, util.c, main.c
installer/windows/OmniScript.iss   # EXE — OS integrated, git-like, file assoc
installer/macos/build-dmg.sh       # DMG + PKG + Install CLI.command
installer/linux/build-deb.sh       # DEB
installer/linux/build-rpm.sh       # RPM
installer/windows/fix-path.ps1     # fix PATH like git

MIT