justfile
Installation
SKILL.md
Justfile Skill
just is a command runner (not a build system) that saves and runs project-specific commands in a
file called Justfile. It uses make-inspired syntax but is simpler and more portable, with none of
make's idiosyncrasies (.PHONY, tab sensitivity, implicit rules, timestamp tracking).
This skill enforces a consistent house style so every Justfile looks the same across projects.
The rules below are the authoritative convention; Tools/lint.ts validates the deterministic ones.
Workflow Routing
| Trigger | Workflow |
|---|---|
| "create a justfile", "set up just", "add a recipe/module" | Workflows/CreateJustfile.md |
| "migrate Makefile to just", "convert make to just" | Workflows/MigrateFromMake.md |
| "check/lint this justfile", "is this justfile correct" | Workflows/CheckJustfile.md |