Install swift-help for integration tests. Suppress .noDriver options from being emitted by swift-help.

Fixes: Driver/help.swift

Author: cltnschlosser

Sources/SwiftOptions/OptionTable.swift

@@ -37,6 +37,7 @@ extension OptionTable {
 
     for option in options {
       if option.isAlias { continue }
+      if option.attributes.contains(.noDriver) { continue }
       if option.isHelpHidden && !includeHidden { continue }
       guard option.isAccepted(by: driverKind) else { continue }
       guard let helpText = option.helpText else { continue }

Tests/SwiftDriverTests/IntegrationTests.swift

@@ -34,17 +34,21 @@ func makeDriverSymlinks(
   try makeDirectories(tempBinDir)
 
   let swift = tempBinDir.appending(component: "swift")
-  try createSymlink(swift, pointingAt: driver, relative: false)
+  try localFileSystem.createSymbolicLink(swift, pointingAt: driver, relative: false)
 
   let swiftc = tempBinDir.appending(components: "swiftc")
-  try createSymlink(swiftc, pointingAt: driver, relative: false)
+  try localFileSystem.createSymbolicLink(swiftc, pointingAt: driver, relative: false)
+
+  let swiftHelp = binDir.appending(component: "swift-help")
+  let swiftHelpSimlink = tempBinDir.appending(component: "swift-help")
+  try localFileSystem.createSymbolicLink(swiftHelpSimlink, pointingAt: swiftHelp, relative: false)
 
   // If we've been given a build dir, link in its lib folder so we can find its
   // resource directory.
   if let swiftBuildDir = swiftBuildDir {
     let libDir = swiftBuildDir.appending(component: "lib")
     let tempLibDir = tempDir.appending(component: "lib" )
-    try createSymlink(tempLibDir, pointingAt: libDir, relative: false)
+    try localFileSystem.createSymbolicLink(tempLibDir, pointingAt: libDir, relative: false)
   }
 
   return (swift: swift, swiftc: swiftc)