Make sure files are open in binary mode, so we don't have newlines auto-translated
Windows lies about whether seek works on pipes, so use Win API to ensure we only seek on regular files
Built with msys2/UCRT64, with UCRT64 packages (gcc, libarchive, etc). Passes all tests except the file permissions one, since permissions on msys2 are a lie.
Built with msys2/UCRT64, with UCRT64 packages (gcc, libarchive, etc). Passes all tests except the file permissions one, since permissions on msys2 are a lie.