diff --git a/.mypy.ini b/.mypy.ini
index bc4a8f4..e606004 100644
--- a/.mypy.ini
+++ b/.mypy.ini
@@ -3,6 +3,7 @@ mypy_path =
     mypy-stubs,
     deps/com.github.aiortc.aiortc/src,
     mypy-stubs/marisa-trie-types,
+    mypy-stubs/types-debugpy,
     python
 
 plugins =
diff --git a/deps/com.github.aiortc.aiortc b/deps/com.github.aiortc.aiortc
index a98c397..1c158ef 160000
--- a/deps/com.github.aiortc.aiortc
+++ b/deps/com.github.aiortc.aiortc
@@ -1 +1 @@
-Subproject commit a98c397d68335854d076fc61925559693d408d28
+Subproject commit 1c158ef28435e2e0345a5d2682db8a2057d71522
diff --git a/mypy-stubs/types-debugpy/debugpy/__init__.pyi b/mypy-stubs/types-debugpy/debugpy/__init__.pyi
new file mode 100644
index 0000000..a5df157
--- /dev/null
+++ b/mypy-stubs/types-debugpy/debugpy/__init__.pyi
@@ -0,0 +1,7 @@
+def listen(
+    addr: tuple[str, int],
+) -> None: ...
+
+def wait_for_client() -> None: ...
+
+def breakpoint() -> None: ...
\ No newline at end of file
diff --git a/python/online/fxreader/pr34/commands_typed/cli.py b/python/online/fxreader/pr34/commands_typed/cli.py
new file mode 100644
index 0000000..23fc950
--- /dev/null
+++ b/python/online/fxreader/pr34/commands_typed/cli.py
@@ -0,0 +1,176 @@
+import dataclasses
+import io
+import glob
+import pathlib
+import logging
+import sys
+import subprocess
+import shutil
+import abc
+
+from .os import shutil_which
+
+from typing import (
+    Optional,
+)
+
+logger = logging.getLogger(__name__)
+
+@dataclasses.dataclass
+class Project:
+    source_dir : pathlib.Path
+    build_dir : pathlib.Path
+    dest_dir : pathlib.Path
+
+class CLI(abc.ABC):
+    @property
+    @abc.abstractmethod
+    def projects(self) -> dict[str, Project]:
+        raise NotImplementedError
+
+    def deploy_wheel(
+        self,
+        project_name: str,
+        argv: Optional[list[str]] = None,
+        output_dir: Optional[pathlib.Path] = None,
+        force: Optional[bool] = None,
+    ) -> None:
+        project = self.projects[project_name]
+
+        # subprocess.check_call([
+        #     sys.argv[0],
+        #     # sys.executable,
+        #     '-p', options.project,
+        #     Command.meson_setup.value,
+        # ])
+
+        assert argv is None or len(argv) == 0
+
+        self.meson_install(
+            project_name=project_name,
+            force=force,
+        )
+
+        cmd = [
+            sys.executable,
+            '-m',
+            'build',
+            '-w', '-n',
+            '-Csetup-args=-Dmodes=pyproject',
+            '-Csetup-args=-Dinstall_path=%s' % str(project.dest_dir),
+            # '-Cbuild-dir=%s' % str(project.build_dir),
+            str(project.source_dir),
+        ]
+
+        if not output_dir is None:
+            cmd.extend(['-o', str(output_dir)])
+
+        subprocess.check_call(cmd)
+
+    def meson_install(
+        self,
+        project_name: str,
+        force: Optional[bool] = None,
+        argv: Optional[list[str]] = None,
+    ) -> None:
+        project = self.projects[project_name]
+
+        if force is None:
+            force = False
+
+        if argv is None:
+            argv = []
+
+        if force and project.dest_dir.exists():
+            shutil.rmtree(project.dest_dir)
+
+        subprocess.check_call([
+            shutil_which('meson', True,),
+            'install',
+            '-C',
+            project.build_dir,
+            '--destdir', project.dest_dir,
+            *argv,
+        ])
+
+        for o in glob.glob(
+            str(project.dest_dir / 'lib' / 'pkgconfig' / '*.pc'),
+            recursive=True,
+        ):
+            logger.info(dict(
+                path=o,
+                action='patch prefix',
+            ))
+
+            with io.open(o, 'r') as f:
+                content = f.read()
+
+            with io.open(o, 'w') as f:
+                f.write(
+                    content.replace('prefix=/', 'prefix=${pcfiledir}/../../')
+                )
+    def ninja(
+        self,
+        project_name: str,
+        argv: Optional[list[str]] = None,
+    ) -> None:
+        project = self.projects[project_name]
+
+        if argv is None:
+            argv = []
+
+        subprocess.check_call([
+            shutil_which('ninja', True),
+            '-C',
+            str(project.build_dir),
+            *argv,
+        ])
+
+    def meson_compile(
+        self,
+        project_name: str,
+        argv: Optional[list[str]] = None,
+    ) -> None:
+        project = self.projects[project_name]
+
+        if argv is None:
+            argv = []
+
+        subprocess.check_call([
+            shutil_which('meson', True,),
+            'compile',
+            '-C',
+            project.build_dir,
+            *argv,
+        ])
+
+    def meson_setup(
+        self,
+        project_name: str,
+        force: bool,
+        argv: Optional[list[str]] = None,
+    ) -> None:
+        project = self.projects[project_name]
+
+        if argv is None:
+            argv = []
+
+        if force:
+            if project.build_dir.exists():
+                logger.info(dict(action='removing build dir', path=project.build_dir))
+                shutil.rmtree(project.build_dir)
+
+        cmd = [
+            shutil_which('meson', True,),
+            'setup',
+            str(project.source_dir),
+            str(project.build_dir),
+            '-Dmodes=["meson"]',
+            # '-Dpkgconfig.relocatable=true',
+            '-Dprefix=/',
+            *argv,
+        ]
+
+        logger.info(dict(cmd=cmd))
+
+        subprocess.check_call(cmd)
\ No newline at end of file
diff --git a/python/online/fxreader/pr34/commands_typed/os.py b/python/online/fxreader/pr34/commands_typed/os.py
new file mode 100644
index 0000000..a4b3563
--- /dev/null
+++ b/python/online/fxreader/pr34/commands_typed/os.py
@@ -0,0 +1,25 @@
+import shutil
+
+from typing import (overload, Optional, Literal,)
+
+@overload
+def shutil_which(
+    name: str,
+    raise_on_failure: Literal[True],
+) -> str: ...
+
+@overload
+def shutil_which(
+    name: str,
+    raise_on_failure: bool,
+) -> Optional[str]: ...
+
+def shutil_which(
+    name: str,
+    raise_on_failure: bool,
+) -> Optional[str]:
+    res = shutil.which(name)
+    if res is None and raise_on_failure:
+        raise NotImplementedError
+    else:
+        return res
\ No newline at end of file