[swift]
build_dir = { file_mask = "\\.build", if = { file_exists = "Package\\.swift" } }
derived_data = { file_mask = "DerivedData", if = { file_exists = ".*\\.xcodeproj" } }
xcuserdata = { file_mask = ".*\\.xcuserdata", if = { file_exists = ".*\\.xcodeproj" } }