How to contribute to the Swift Package Manager?

i’m currently trying to help my swift mentorship program mentee make her first contribution to the SPM, and it is not going well because i myself am not able to build the package manager from source on main; it appears something is broken in its TSC dependency:

/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:23:13: error: enum 'FileSystemAttribute' does not exist in module 'TSCBasic'
import enum TSCBasic.FileSystemAttribute
            ^        ~~~~~~~~~~~~~~~~~~~
/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:75:38: error: cannot find type 'FileSystemAttribute' in scope
    public func hasAttribute(_ name: FileSystemAttribute, _ path: AbsolutePath) -> Bool {
                                     ^~~~~~~~~~~~~~~~~~~
/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:206:62: error: cannot convert value of type 'TSCAbsolutePath' (aka 'AbsolutePath') to expected argument type 'AbsolutePath'
        return try self.itemReplacementDirectories(for: path.underlying).compactMap { AbsolutePath($0) }
                                                             ^
/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:206:100: error: cannot convert value of type 'AbsolutePath' to expected argument type 'TSCAbsolutePath' (aka 'AbsolutePath')
        return try self.itemReplacementDirectories(for: path.underlying).compactMap { AbsolutePath($0) }
                                                                                                   ^
/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:561:53: error: value of type 'any WritableByteStream' has no member 'send'
        try self.writeFileContents(path, body: { $0.send(bytes) })
                                                 ~~ ^~~~
/swift/swift-package-manager/Sources/Basics/FileSystem/FileSystem+Extensions.swift:23:13: error: enum 'FileSystemAttribute' does not exist in module 'TSCBasic'
import enum TSCBasic.FileSystemAttribute

this smells like a wrong-resolved-dependency version problem, but unfortunately, the Package.resolved pins have not been checked-in to that repository, so i have no straightforward way of constraining the build to only use compatible versions of swift-tools-support-core.

any guidance on how to proceed would be appreciated!

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