Swift --version not matching swift package --version

deverman · June 21, 2025, 5:49am

Hello I was having trouble building a command line program and I found that my swift and package manager version seem to be different. I'm running macOS Sequoia 15.5. I have uninstalled all the references to Xcode and swifty. There is still a swift executable in /user/bin. I rebooted and to run the commands below I had to first reinstall the command line tools when I ran them and agree to the license so I am sure I did a thorough job of removing things originally. The versions should match?

deverman@Brents-MacBook-Pro-2 Toolchains % which swift
/usr/bin/swift
deverman@Brents-MacBook-Pro-2 Toolchains % swift --version
swift-driver version: 1.120.5 Apple Swift version 6.1.2 (swiftlang-6.1.2.1.2 clang-1700.0.13.5)
Target: arm64-apple-macosx15.0
deverman@Brents-MacBook-Pro-2 Toolchains % swift package --version
Swift Package Manager - Swift 6.1.0

bkhouri · June 30, 2025, 2:36pm

It looks like that may be expected as the Swift Package Manager version is in the swift-package-manager source code, and the version still represents 6.2.0

github.com/swiftlang/swift-package-manager

Sources/Basics/SwiftVersion.swift

0c7ebf2b4


      
                  if !vendorPrefix.isEmpty {
                      vendorPrefix += " "
                  }
                  return vendorPrefix + "Swift Package Manager - Swift " + self.displayString
              }
          }
          
          extension SwiftVersion {
              /// The current version of the package manager.
              public static let current = SwiftVersion(
                  version: (6, 2, 0),
                  isDevelopment: true,
                  buildIdentifier: getBuildIdentifier()
              )
          }
          
          private func getBuildIdentifier() -> String? {
              let buildIdentifier = String(cString: SPM_BuildIdentifierString())
              return buildIdentifier.isEmpty ? nil : buildIdentifier
          }

deverman · July 14, 2025, 11:17am

OK hopefully things settle down with the releases this fall. If anyone knows a workaround please post here.

grynspan · July 14, 2025, 2:47pm

There's a GitHub issue floating around somewhere to get all the various versions to derive from the same compile-time data in CMake.