Easy Pkl configuration language installer for Mac.

pkl_install_script.swift

#!/usr/bin/env swift

import Foundation

@discardableResult
func shell(_ args: String...) -> Int32 {
    let task = Process()
    task.launchPath = "/usr/bin/env"
    task.arguments = args
    task.launch()
    task.waitUntilExit()
    return task.terminationStatus
}

func pklSetup() {
    shell("curl", "-L", "-o", "pkl", "https://github.com/apple/pkl/releases/download/0.25.1/pkl-macos-aarch64")
    shell("chmod", "+x", "pkl")
    let pklToolchainDir = FileManager.default.homeDirectoryForCurrentUser.appendingPathComponent(".pkl_toolchain").path
    if !FileManager.default.fileExists(atPath: pklToolchainDir) {
        do {
            try FileManager.default.createDirectory(atPath: pklToolchainDir, withIntermediateDirectories: true, attributes: nil)
        } catch {
            print("Failed to create directory: \(error.localizedDescription)")
        }
    }
    shell("mv", "pkl", "\(pklToolchainDir)/pkl")
    updatePath(pklToolchainDir)
}

func updatePath(_ toolchainDir: String) {
    let profilePath = FileManager.default.homeDirectoryForCurrentUser.appendingPathComponent(".zshenv").path
    if FileManager.default.fileExists(atPath: profilePath) {
        let exportCmd = "\nexport PATH=\"\(toolchainDir):$PATH\"\n"
        do {
            let fileHandle = try FileHandle(forWritingTo: URL(fileURLWithPath: profilePath))
            fileHandle.seekToEndOfFile()
            if let exportData = exportCmd.data(using: .utf8) {
                fileHandle.write(exportData)
            }
            fileHandle.closeFile()
            print("PATH updated in .zshenv")
        } catch {
            print("Failed to update .zshenv: \(error.localizedDescription)")
        }
    } else {
        print(".zshenv not found, unable to update PATH")
    }
}

#if os(macOS)
    pklSetup()
#else
    print("This script is only for macOS")
#endif