Consistent use of relative imports. NFC (emscripten-core#19703)

Author: sbc100

.mypy.ini

@@ -2,6 +2,7 @@
 mypy_path = third_party/,third_party/ply,third_party/websockify
 files = .
 exclude = (?x)(
+  cache |
   third_party |
   conf\.py |
   emrun\.py |

tools/minimal_runtime_shell.py

@@ -7,10 +7,10 @@
 __rootdir__ = os.path.dirname(__scriptdir__)
 sys.path.insert(0, __rootdir__)
 
-from tools import shared
-from tools import line_endings
-from tools import utils
-from tools.settings import settings
+from . import shared
+from . import line_endings
+from . import utils
+from .settings import settings
 
 logger = logging.getLogger('minimal_runtime_shell')
 

tools/system_libs.py

@@ -17,8 +17,8 @@
 from . import shared, building, utils
 from . import diagnostics
 from . import cache
-from tools.settings import settings
-from tools.utils import read_file
+from .settings import settings
+from .utils import read_file
 
 logger = logging.getLogger('system_libs')