main.lua

local BASALT_PATH = "/basalt.lua"
local BASALT_URL = "https://basalt.madefor.cc/2.5/install.lua"

local function ensureBasalt()
    if not fs.exists(BASALT_PATH) then
        print("Installing Basalt...")

        local previousDirectory = shell.dir()
        shell.setDir("/")
        local installCallSucceeded, installed = pcall(
            shell.run,
            "wget",
            "run",
            BASALT_URL,
            "minified"
        )
        shell.setDir(previousDirectory)

        if not installCallSucceeded or not installed
            or not fs.exists(BASALT_PATH) then
            error("Failed to install Basalt.", 0)
        end
    end

    package.path = "/?.lua;" .. package.path

    local loaded, basalt = pcall(require, "basalt")
    if not loaded then
        error("Failed to load Basalt: " .. tostring(basalt), 0)
    end

    return basalt
end

local function loadApplication(basalt)
    local runningProgram = shell.getRunningProgram()
    local projectRoot = fs.getDir(shell.resolve(runningProgram))
    local applicationPath = fs.combine(projectRoot, "src/app.lua")
    local application, loadError = loadfile(applicationPath, nil, _ENV)

    if not application then
        error("Failed to load Turtle Toolbox: " .. tostring(loadError), 0)
    end

    return application(basalt, projectRoot)
end

loadApplication(ensureBasalt())