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Follow up from #350 and #352

  • Add a new command list-depenencies which lists toolchain dependencies for the given platorm
  • Ask to install the dependencies for the user with elevated privileges and give option to auto install with -I

ToDo: Add tests

// This is very security sensitive code here and that's why there's special process handling
// and an allow-list of what we will attempt to run as root. Also, the sudo binary is run directly
// with a fully-qualified path without any checking in order to avoid TOCTOU.
guard try Self.allowedInstallCommands.wholeMatch(in: installCmd) != nil else {
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suggestion: We could do this check before presenting the command to the user. They might try running it themselves without checking.

var format: SwiftlyCore.OutputFormat = .text

@Flag(name: .shortAndLong, help: "Automatically install missing system dependencies with elevated permissions")
var installSystemDeps: Bool = false
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issue: Let's call out sudo as the mechanism that will be used to install the system deps here to make that part clear. Sudo may or may not work for some users and machines.


let p = Process()
p.executableURL = URL(fileURLWithPath: "/usr/bin/sudo")
p.arguments = ["-k"] + ["-p", "Enter your sudo password to run the dependency install command right away (Ctrl-C aborts): "] + installCmd.split(separator: " ").map { String($0) }
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thought: This pattern of invoking sudo came from my previous attempt to eliminate prompts where they weren't needed. It might be better to remove the "-k" and "-p" flags here, and just include the details in the above prompts.

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