[Windows] TSCBasic/Path Asserts with long paths > 260 in length

2025-05-01T15:00:18.097Z] TSCBasic/Path.swift:969: Assertion failed [2025-05-01T15:00:18.097Z] [2025-05-01T15:00:18.097Z] Current stack trace: [2025-05-01T15:00:18.097Z] When creating an absolute path by appending a relative path the appending method is used for Windows. ``` /// Initializes the AbsolutePath by concatenating a relative path to an /// existing absolute path, and renormalizing if necessary. public init(_ absPath: AbsolutePath, _ relPath: RelativePath) { self.init(absPath._impl.appending(relativePath: relPath._impl)) } ``` This in turn calls a windows API that will canonicalize the path adding the \\?\ prefix for long path support ``` func appending(relativePath: Self) -> Self { var result: PWSTR? _ = self.string.withCString(encodedAs: UTF16.self) { root in relativePath.string.withCString(encodedAs: UTF16.self) { path in PathAllocCombine(root, path, ULONG(PATHCCH_ALLOW_LONG_PATHS.rawValue), &result) } } defer { LocalFree(result) } return Self(string: String(decodingCString: result!, as: UTF16.self)) } ``` The Assert compares the path to the non prefixed path and will fail.