App, lib, cmds: Fix mypy.explicit-override fallout

This commit adds @override decorators to approximately 300 methods
across 76 files that inherit from base classes such as AbstractCmd,
FileContext, ExecContext, Distro, SSHClient, and others.

The decorator ensures the type checker can verify that overridden
methods have compatible signatures and prevents accidental shadowing
of inherited methods without intent.

Files modified include command classes, library modules, distro
implementations, and SSH client implementations.

Assisted-by: unsloth/Qwen3.6-35B-A3B-GGUF:IQ4_NL with pi.dev v
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/App.py

@@ -10,7 +10,7 @@ import sys
 
 from enum import Enum, auto
 from functools import cache
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from .lib.App import App as Base
 from .lib.Distro import Distro
@@ -374,11 +374,13 @@ class App(Base):
                 default_pkg_filter = pkg_filter,
             )
 
+    @override
     async def __aexit__(self, exc_type, exc, tb) -> None:
         if self.__exec_context is not None:
             await self.__exec_context.close()
             self.__exec_context = None
 
+    @override
     def _add_arguments(self, parser) -> None:
         super()._add_arguments(parser)
         parser.add_argument('-t', '--topdir', default = None, help = 'Project Path')
@@ -421,6 +423,7 @@ class App(Base):
             help = 'Default filter for all distribution package-related operations',
         )
 
+    @override
     async def _run(self, args: argparse.Namespace) -> None:
         self.___topdir = args.topdir
         self.___pretty_topdir = self.__format_topdir(self.___topdir, args.topdir_format)

src/python/jw/pkg/CmdBase.py

@@ -1,8 +1,10 @@
+from typing import override
 from .App import App
 from .lib.Cmd import Cmd as Base
 
 class CmdBase(Base):
 
+    @override  # pyright: ignore[reportArgumentType]
     @property
     def app(self) -> App:
         ret = super().app

src/python/jw/pkg/cmds/Cmd.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ..App import App as Parent
 from ..CmdBase import CmdBase as Base
@@ -20,6 +20,7 @@ class Cmd(Base):  # export
     ) -> None:
         super().__init__(parent, name, help, aliases = aliases)
 
+    @override
     async def _run(self, args):
         # Missing subcommand
         self.print_help(1)

src/python/jw/pkg/cmds/CmdPkg.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -18,6 +18,7 @@ class CmdPkg(Cmd):  # export
         )
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -25,5 +26,6 @@ class CmdPkg(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/CmdPlatform.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -15,6 +15,7 @@ class CmdPlatform(Cmd):  # export
         )
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -22,5 +23,6 @@ class CmdPlatform(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/CmdPosix.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -20,6 +20,7 @@ class CmdPosix(Cmd):  # export
         )
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -27,5 +28,6 @@ class CmdPosix(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/CmdProjects.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -17,6 +17,7 @@ class CmdProjects(Cmd):  # export
         )
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -24,5 +25,6 @@ class CmdProjects(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/CmdSecrets.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -13,6 +13,7 @@ class CmdSecrets(Cmd):  # export
         super().__init__(parent, 'secrets', help = 'Manage package secrets')
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -20,5 +21,6 @@ class CmdSecrets(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/pkg/CmdDelete.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -12,11 +12,13 @@ class CmdDelete(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'delete', help = 'Delete packages by name')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
             'names', nargs = '*', help = 'Names of packages to be deleted'
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         return await self.distro.delete(args.names)

src/python/jw/pkg/cmds/pkg/CmdDup.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -12,6 +12,7 @@ class CmdDup(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'dup', help = 'Upgrade distribution')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -21,5 +22,6 @@ class CmdDup(Cmd):  # export
             help = "Only download packages from the repos, don't install them, yet",
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         return await self.distro.dup(download_only = args.download_only)

src/python/jw/pkg/cmds/pkg/CmdInstall.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from .Cmd import Cmd, Parent
 
@@ -16,6 +16,7 @@ class CmdInstall(Cmd):  # export
             help = "Install the distribution's notion of available packages",
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('names', nargs = '*', help = 'Packages to be installed')
@@ -32,6 +33,7 @@ class CmdInstall(Cmd):  # export
             help = "Don't expand macros in <names>",
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         names = (
             args.names if args.fixed_strings else self.distro.expand_macros(args.names)

src/python/jw/pkg/cmds/pkg/CmdLs.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .NamedPkgsCmd import NamedPkgsCmd
 
@@ -14,9 +14,11 @@ class CmdLs(NamedPkgsCmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'ls', help = 'List package contents')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         for name in args.names:
             print('\n'.join(await self.distro.pkg_files(name)))

src/python/jw/pkg/cmds/pkg/CmdMeta.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .NamedPkgsCmd import NamedPkgsCmd, Parent
 
@@ -12,9 +12,11 @@ class CmdMeta(NamedPkgsCmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'meta', help = 'List package metadata')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         names = await self.distro.select(args.names)
         for name in names:

src/python/jw/pkg/cmds/pkg/CmdRebootRequired.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -16,8 +16,10 @@ class CmdRebootRequired(Cmd):  # export
             help = 'Check whether the machine needs rebooting'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         await self.distro.reboot_required()

src/python/jw/pkg/cmds/pkg/CmdRefresh.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -16,8 +16,10 @@ class CmdRefresh(Cmd):  # export
             help = "Refresh the distribution's notion of available packages",
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         return await self.distro.ref()

src/python/jw/pkg/cmds/pkg/CmdSelect.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...lib.PackageFilter import PackageFilterString
 from .Cmd import Cmd, Parent
@@ -13,10 +13,12 @@ class CmdSelect(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'select', help = 'Select packages by filter')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('filter', help = 'Package filter string')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         filter = PackageFilterString(args.filter) if args.filter else None
         for p in await self.distro.select(filter = filter):

src/python/jw/pkg/cmds/pkg/NamedPkgsCmd.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -12,6 +12,7 @@ class NamedPkgsCmd(Cmd):  # export
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('names', nargs = '*', help = 'Package names')

src/python/jw/pkg/cmds/platform/CmdInfo.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...lib.Distro import Distro
 from .Cmd import Cmd, Parent
@@ -15,6 +15,7 @@ class CmdInfo(Cmd):  # export
             parent, 'info', help = 'Retrieve information about target platform'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -23,5 +24,6 @@ class CmdInfo(Cmd):  # export
             help = f'Format string, expanding macros {", ".join(Distro.macros())}',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print(self.app.distro.expand_macros(args.format))

src/python/jw/pkg/cmds/posix/Cmd.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...CmdBase import CmdBase as Base
 from ..CmdPosix import CmdPosix as Parent
@@ -13,6 +13,7 @@ class Cmd(Base):  # export
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 

src/python/jw/pkg/cmds/posix/CmdCopy.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...lib.util import copy
 from .Cmd import Cmd, Parent
@@ -13,6 +13,7 @@ class CmdCopy(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'copy', help = 'Copy files')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('src', help = 'Source file URI')
@@ -33,6 +34,7 @@ class CmdCopy(Cmd):  # export
             help = "Don't expand macros in <src> and <dst>",
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
 
         def __expand(url: str) -> str:

src/python/jw/pkg/cmds/posix/CmdTar.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -13,6 +13,7 @@ class CmdTar(Cmd):  # export
         super().__init__(parent, 'tar', help = 'Handle tar archives')
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -20,5 +21,6 @@ class CmdTar(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/posix/tar/Cmd.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from contextlib import asynccontextmanager
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ....CmdBase import CmdBase as Base
 from ....lib.FileContext import FileContext
@@ -27,6 +27,7 @@ class Cmd(Base):  # export
             )
             yield ret
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(

src/python/jw/pkg/cmds/posix/tar/CmdExtract.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ....lib.log import DEBUG, log
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,10 +12,12 @@ class CmdExtract(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'x', help = 'Extract a tar archive')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('dst', help = 'Destination root URI')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         async with self.ctx(dst = args.dst) as ctx:
             paths = await ctx.extract(ctx.dst.root)

src/python/jw/pkg/cmds/projects/BaseCmdPkgRelations.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import re
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 from .lib.pkg_relations import VersionSyntax
@@ -48,6 +48,7 @@ class BaseCmdPkgRelations(Cmd):
         super().__init__(parent, 'pkg-' + relation, help = help)
         self.relation = relation
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -141,6 +142,7 @@ class BaseCmdPkgRelations(Cmd):
             help = 'Put double quotes around each listed dependency',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         return self.print_pkg_relations(self.relation, args)
 

src/python/jw/pkg/cmds/projects/Cmd.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...CmdBase import CmdBase as Base
 from ..CmdProjects import CmdProjects as Parent
@@ -13,6 +13,7 @@ class Cmd(Base):  # export
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 

src/python/jw/pkg/cmds/projects/CmdBuild.py

@@ -5,7 +5,7 @@ import os
 import re
 
 from functools import lru_cache
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...App import Scope
 from ...lib.log import DEBUG, ERR, NOTICE, log
@@ -22,6 +22,7 @@ class CmdBuild(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'build', help = 'janware software project build tool')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -90,6 +91,7 @@ class CmdBuild(Cmd):  # export
             help = 'Modules to be built',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
 
         @lru_cache(maxsize = None)

src/python/jw/pkg/cmds/projects/CmdCanonicalizeRemotes.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...lib.base import InputMode
 from ...lib.log import NOTICE, log
@@ -20,6 +20,7 @@ class CmdCanonicalizeRemotes(Cmd):  # export
             parent, 'canonicalize-remotes', help = 'Streamline janware Git remotes'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -30,6 +31,7 @@ class CmdCanonicalizeRemotes(Cmd):  # export
             help = 'Only log what would be done',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
 
         async def git(cmd: list[str], ro = False, throw = True) -> Result:

src/python/jw/pkg/cmds/projects/CmdCflags.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,10 +12,12 @@ class CmdCflags(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'cflags', help = 'cflags')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdCheck.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser
@@ -16,6 +16,7 @@ class CmdCheck(Cmd):  # export
         )
         self.load_subcommands()
 
+    @override
     async def _run(self, args):
         import sys
 
@@ -23,5 +24,6 @@ class CmdCheck(Cmd):  # export
         self.parser.print_help()
         sys.exit(1)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)

src/python/jw/pkg/cmds/projects/CmdCommands.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -11,9 +11,11 @@ class CmdCommands(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'commands', help = 'List available commands')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         import glob
         import os

src/python/jw/pkg/cmds/projects/CmdCreateFile.py

@@ -1,5 +1,6 @@
 from argparse import ArgumentParser, ArgumentTypeError, Namespace
 from enum import Enum, auto
+from typing import override
 
 from ...lib.log import WARNING, log
 from .Cmd import Cmd, Parent
@@ -93,6 +94,7 @@ class CmdCreateFile(Cmd):  # export
             parent, 'create-file', help = 'Generate a file from project metadata'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -124,6 +126,7 @@ class CmdCreateFile(Cmd):  # export
         )
         parser.add_argument('module', help = 'The module to generate the file for')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         method = getattr(self, 'render_' + args.format, None)
         if method is None:  # Should be prevented by choices=[] but keeps linter happy

src/python/jw/pkg/cmds/projects/CmdCreatePkgConfig.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 from .lib.templates import tmpl_render
@@ -32,6 +32,7 @@ class CmdCreatePkgConfig(Cmd):  # export
             string = re.sub(patt, replacement, string)
         return string
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('-F', '--project-descr-file', default = None)
@@ -46,6 +47,7 @@ class CmdCreatePkgConfig(Cmd):  # export
         parser.add_argument('-R', '--requires-build', default = None)
         parser.add_argument('-V', '--variables', nargs = '*')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         project_conf_var_keys = [
             'description',

src/python/jw/pkg/cmds/projects/CmdExepath.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,6 +12,7 @@ class CmdExepath(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'exepath', help = 'exepath')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -23,6 +24,7 @@ class CmdExepath(Cmd):  # export
         )
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdGetAuthInfo.py

@@ -5,7 +5,7 @@ import re
 from ...lib.log import DEBUG, log
 from ...lib.Uri import Uri
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -19,6 +19,7 @@ class CmdGetAuthInfo(Cmd):  # export
             help = 'Try to retrieve authentication information from the source tree',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -52,6 +53,7 @@ class CmdGetAuthInfo(Cmd):  # export
             help = 'Show remote base URL',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         keys = ['username', 'password']
 

src/python/jw/pkg/cmds/projects/CmdGetval.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -11,6 +11,7 @@ class CmdGetval(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'getval', help = 'Get value from project config')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -21,6 +22,7 @@ class CmdGetval(Cmd):  # export
         parser.add_argument('section', default = '', help = 'Config section')
         parser.add_argument('key', default = '', help = 'Config key')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         project = args.project
         if project is None:

src/python/jw/pkg/cmds/projects/CmdHtdocsDir.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -15,10 +15,12 @@ class CmdHtdocsDir(Cmd):  # export
             help = 'Print source directory containing document root of a given module',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         r = []
         for m in args.module:

src/python/jw/pkg/cmds/projects/CmdLdflags.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,6 +12,7 @@ class CmdLdflags(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'ldflags', help = 'ldflags')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
@@ -56,6 +57,7 @@ class CmdLdflags(Cmd):  # export
             return None
         return ' '.join(ret)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdLdlibpath.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,6 +12,7 @@ class CmdLdlibpath(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'ldlibpath', help = 'ldlibpath')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -23,6 +24,7 @@ class CmdLdlibpath(Cmd):  # export
         )
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdLibname.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -11,9 +11,11 @@ class CmdLibname(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'libname', help = 'libname')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print(self.app.get_libname(args.module))

src/python/jw/pkg/cmds/projects/CmdListRepos.py

@@ -6,7 +6,7 @@ from ...lib.log import DEBUG, log
 from ...lib.Uri import Uri
 from ...lib.util import get_password, get_username, run_curl_into
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -18,6 +18,7 @@ class CmdListRepos(Cmd):  # export
             parent, 'list-repos', help = 'Query a remote GIT server for repositories'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -43,6 +44,7 @@ class CmdListRepos(Cmd):  # export
             '--from-owner', help = "List from-owner's projects", default = 'janware'
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
 
         base_url = Uri(args.base_url)

src/python/jw/pkg/cmds/projects/CmdModules.py

@@ -3,7 +3,7 @@ import re
 
 from ...lib.log import DEBUG, log
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -13,6 +13,7 @@ class CmdModules(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'modules', help = 'Query existing janware packages')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -24,6 +25,7 @@ class CmdModules(Cmd):  # export
             'Key-value pairs, seperated by commas, to be searched for in project.conf',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         import pathlib
 

src/python/jw/pkg/cmds/projects/CmdPath.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -12,10 +12,12 @@ class CmdPath(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'path', help = 'path')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdProjDir.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 from ...lib.log import WARNING, log
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -14,10 +14,12 @@ class CmdProjDir(Cmd):  # export
             parent, 'proj-dir', help = 'Print directory of a given package'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         out = []
         for m in args.module:

src/python/jw/pkg/cmds/projects/CmdPythonpath.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ...App import Scope
 from .Cmd import Cmd, Parent
@@ -15,6 +15,7 @@ class CmdPythonpath(Cmd):  # export
             parent, 'pythonpath', help = 'Generate PYTHONPATH for given modules'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -38,6 +39,7 @@ class CmdPythonpath(Cmd):  # export
         )
         parser.add_argument('module', help = 'Modules', nargs = '*')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         deps = self.app.get_project_refs(
             args.module,

src/python/jw/pkg/cmds/projects/CmdRequiredOsPkg.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 from ...App import Scope
 from ...lib.log import DEBUG, log
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -18,6 +18,7 @@ class CmdRequiredOsPkg(Cmd):  # export
             help = 'List distribution packages required for a package',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('flavours', help = 'Dependency flavours', default = 'build')
@@ -35,6 +36,7 @@ class CmdRequiredOsPkg(Cmd):  # export
             help = 'Put double quotes around each listed dependency',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         modules = args.modules
         flavours = set(args.flavours.split(','))

src/python/jw/pkg/cmds/projects/CmdSummary.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -13,10 +13,12 @@ class CmdSummary(Cmd):  # export
             parent, 'summary', help = 'Print summary description of given modules'
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         r = []
         for m in args.module:

src/python/jw/pkg/cmds/projects/CmdTest.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -11,9 +11,11 @@ class CmdTest(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'test', help = 'Test')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('blah', default = '', help = 'The blah argument')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print('blah = ' + args.blah)

src/python/jw/pkg/cmds/projects/CmdTmplDir.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from .Cmd import Cmd, Parent
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from argparse import ArgumentParser, Namespace
@@ -15,10 +15,12 @@ class CmdTmplDir(Cmd):  # export
             help = 'Print directory containing templates of a given module',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         r = []
         for m in args.module:

src/python/jw/pkg/cmds/projects/check/Cmd.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ....CmdBase import CmdBase as Base
 from ..CmdCheck import CmdCheck as Parent
@@ -13,6 +13,7 @@ class Cmd(Base):  # export
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
 

src/python/jw/pkg/cmds/projects/check/CmdDep.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ....lib.log import NOTICE, log
 from .Cmd import Cmd, Parent
@@ -17,11 +17,13 @@ class CmdDep(Cmd):  # export
             help = 'Check for circular dependencies between given modules',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('module', nargs = '*', help = 'Modules')
         parser.add_argument('-f', '--flavour', nargs = '?', default = 'build')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         cycle = self.app.find_circular_deps(args.module, args.flavour)
         if cycle:

src/python/jw/pkg/cmds/secrets/Cmd.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from functools import cached_property
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...CmdBase import CmdBase as Base
 from ..CmdSecrets import CmdSecrets as Parent
@@ -46,6 +46,7 @@ class Cmd(Base):  # export
     def __init__(self, parent: Parent, name: str, help: str) -> None:
         super().__init__(parent, name, help)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument('packages', nargs = '*', help = 'Package names')

src/python/jw/pkg/cmds/secrets/CmdCompileTemplates.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 from .lib.base import Attrs
@@ -15,10 +15,12 @@ class CmdCompileTemplates(Cmd):  # export
             parent, 'compile-templates', help = 'Compile package template files'
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         attrs = Attrs(args.mode, args.owner, args.group, None)
         await self._compile_template_files(args.packages, attrs)
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(

src/python/jw/pkg/cmds/secrets/CmdInstall.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -18,6 +18,7 @@ class CmdInstall(Cmd):  # export
             ),
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         parser.add_argument('src', help = 'URI of secret source')
         parser.add_argument(
@@ -28,6 +29,7 @@ class CmdInstall(Cmd):  # export
         )
         super().add_arguments(parser)
 
+    @override
     async def _run(self, args: Namespace) -> None:
         packages = [] if args.packages == ['all'] else args.packages
         await self.ctx.install(args.src, packages, args.only_missing)

src/python/jw/pkg/cmds/secrets/CmdListCompilationOutput.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -16,6 +16,7 @@ class CmdListCompilationOutput(Cmd):  # export
             help = 'List package compilation output files',
         )
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -25,6 +26,7 @@ class CmdListCompilationOutput(Cmd):  # export
             help = 'Show all output targets, including non-existent files',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print(
             '\n'.join(

src/python/jw/pkg/cmds/secrets/CmdListSecrets.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -12,6 +12,7 @@ class CmdListSecrets(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'list-secrets', help = 'List package secret files')
 
+    @override
     def add_arguments(self, parser: ArgumentParser) -> None:
         super().add_arguments(parser)
         parser.add_argument(
@@ -21,6 +22,7 @@ class CmdListSecrets(Cmd):  # export
             help = 'Show all secret paths, including non-existent files',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print(
             '\n'.join(

src/python/jw/pkg/cmds/secrets/CmdListTemplates.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -12,5 +12,6 @@ class CmdListTemplates(Cmd):  # export
     def __init__(self, parent: Parent) -> None:
         super().__init__(parent, 'list-templates', help = 'List package template files')
 
+    @override
     async def _run(self, args: Namespace) -> None:
         print('\n'.join(await self._list_template_files(args.packages)))

src/python/jw/pkg/cmds/secrets/CmdRmCompilationOutput.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .Cmd import Cmd, Parent
 
@@ -16,5 +16,6 @@ class CmdRmCompilationOutput(Cmd):  # export
             help = 'Remove package compilation output files',
         )
 
+    @override
     async def _run(self, args: Namespace) -> None:
         await self._remove_compilation_targets(args.packages)

src/python/jw/pkg/lib/App.py

@@ -6,7 +6,7 @@ import os
 import sys
 
 from argparse import ArgumentDefaultsHelpFormatter, ArgumentParser, Namespace
-from typing import TYPE_CHECKING, Any
+from typing import override, TYPE_CHECKING, Any
 
 from .AsyncRunner import AsyncRunner
 from .log import DEBUG, ERR, NOTICE, log, log_m, set_log_flags, set_log_level
@@ -192,6 +192,7 @@ class App:  # export
 
             class NoopCompleter(BaseCompleter):
 
+                @override
                 def __call__(self, *args, **kwargs):
                     return None
 

src/python/jw/pkg/lib/Cmd.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import abc
 import sys
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .log import ERR
 from .Types import LoadTypes, Types
@@ -173,14 +173,18 @@ class Cmd(AbstractCmd):  # export
         self.__description = description if description else help
         self.__aliases = aliases if aliases else []
 
+    @override
     def _name(self) -> str:
         return self.__name
 
+    @override
     def _help(self) -> str:
         return self.__help
 
+    @override
     def _description(self) -> str:
         return self.__description
 
+    @override
     def _aliases(self) -> Iterable[str]:
         return self.__aliases

src/python/jw/pkg/lib/ExecContext.py

@@ -5,7 +5,7 @@ import errno
 import sys
 
 from decimal import ROUND_FLOOR, Decimal
-from typing import TYPE_CHECKING, NamedTuple
+from typing import override, TYPE_CHECKING, NamedTuple
 
 if TYPE_CHECKING:
     from typing import Type
@@ -250,6 +250,7 @@ class ExecContext(Base):
         super().__init__(*args, **kwargs)
 
     @classmethod
+    @override
     def create(cls, *args, **kwargs) -> ExecContext:
         ret = super().create(*args, **kwargs)
         if not isinstance(ret, cls):
@@ -451,6 +452,7 @@ class ExecContext(Base):
             cc.check_exit_code(ret)
         return ret
 
+    @override
     async def _get(
         self, path: str, wd: str | None, throw: bool, verbose: bool | None, title: str
     ) -> Result:
@@ -485,6 +487,7 @@ class ExecContext(Base):
             cc.check_exit_code(ret)
         return ret
 
+    @override
     async def _put(
         self,
         path: str,
@@ -565,22 +568,27 @@ class ExecContext(Base):
             log(ERR, msg)
         return ret
 
+    @override
     async def _unlink(self, path: str) -> None:
         cmd = ['rm', '-f', path]
         await self.run(cmd, cmd_input = InputMode.NonInteractive)
 
+    @override
     async def _erase(self, path: str) -> None:
         cmd = ['rm', '-rf', path]
         await self.run(cmd, cmd_input = InputMode.NonInteractive)
 
+    @override
     async def _rename(self, src: str, dst: str) -> None:
         cmd = ['mv', src, dst]
         await self.run(cmd, cmd_input = InputMode.NonInteractive)
 
+    @override
     async def _mkdir(self, path: str, mode: int) -> None:
         cmd = ['mkdir', path, '-m', self.__mode_str(mode)]
         await self.run(cmd, cmd_input = InputMode.NonInteractive)
 
+    @override
     async def _mktemp(self, tmpl: str, directory: bool) -> str:
         cmd = ['mktemp']
         if directory:
@@ -593,6 +601,7 @@ class ExecContext(Base):
             )
         return result.stdout_str.strip()
 
+    @override
     async def _stat(self, path: str, follow_symlinks: bool) -> StatResult:
 
         async def __stat(opts: list[str]) -> Result:
@@ -662,6 +671,7 @@ class ExecContext(Base):
         assert stdout is not None  # Just there to pacify the linter
         return _build_stat_result(stdout.rstrip('\n').split(_US), mode_base = 8)
 
+    @override
     async def _chown(self, path: str, owner: str | None, group: str | None) -> None:
         if owner is None and group is None:
             raise ValueError(f'Tried to chown("{path}") without owner and group')
@@ -674,6 +684,7 @@ class ExecContext(Base):
         assert ownership is not None  # Impossible, just there to calm the linter
         await self.run(['chown', ownership, path], cmd_input = InputMode.NonInteractive)
 
+    @override
     async def _chmod(self, path: str, mode: int) -> None:
         await self.run(
             ['chmod', self.__mode_str(mode), path],

src/python/jw/pkg/lib/FileContext.py

@@ -4,7 +4,7 @@ import abc
 
 from enum import Enum, auto
 from functools import cached_property
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from .log import DEBUG, ERR, log
 from .Uri import Uri
@@ -50,6 +50,7 @@ class FileContext(abc.ABC):
     async def __aexit__(self, exc_type, exc, tb):
         await self.close()
 
+    @override
     def __repr__(self) -> str:
         return self.__uri.id
 

src/python/jw/pkg/lib/Package.py

@@ -1,4 +1,4 @@
-from typing import Any
+from typing import override, Any
 
 meta_tags = [
     'name',
@@ -56,6 +56,7 @@ class Package:
         self.url = url
         self.maintainer = maintainer
 
+    @override
     def __repr__(self) -> str:
         global meta_tags
         return '\n'.join([f'{key:<15}: {getattr(self, key)}' for key in meta_tags])

src/python/jw/pkg/lib/PackageFilter.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 import abc
 import re
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from .Package import Package
@@ -25,6 +25,7 @@ class PackageFilterString(PackageFilter):
             raise Exception(f'Unsupported filter string "{definition}"')
         self.__definition = url_rx_str
 
+    @override
     def _match(self, package: Package) -> bool:
         url = package.url
         if url is None:

src/python/jw/pkg/lib/ProcFilter.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import abc
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .base import Result
 
@@ -20,6 +20,7 @@ class ProcFilter(abc.ABC):
 
 class ProcFilterIdentity(ProcFilter):
 
+    @override
     async def _run(self, data: bytes | None) -> Result:
         return Result(data, None, 0)
 

src/python/jw/pkg/lib/ProcFilterGpg.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from .ProcFilter import ProcFilter
 
@@ -13,6 +13,7 @@ class ProcFilterGpg(ProcFilter):
     def __init__(self, ec: ExecContext) -> None:
         self.__ec = ec
 
+    @override
     async def _run(self, data: bytes | None) -> Result:
         if data is None:
             raise Exception('No data for GPG to decrypt')

src/python/jw/pkg/lib/Result.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from typing import override
+
 class Result:
 
     def __init__(
@@ -113,6 +115,7 @@ class Result:
 
         return ret
 
+    @override
     def __repr__(self) -> str:
         return self.__summarize(verbose = False)
 

src/python/jw/pkg/lib/TarIo.py

@@ -9,7 +9,7 @@ from tarfile import TarFile, TarInfo
 from .CopyContext import CopyContext
 from .ExecContext import ExecContext
 from .log import DEBUG, ERR, log
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 if TYPE_CHECKING:
     from .base import StatResult
@@ -89,6 +89,7 @@ class TarIo(CopyContext):
 
 class TarIoTarFile(TarIo):
 
+    @override
     async def _extract(self, blob: bytes, root: str | None = None) -> None:
         tf = TarFile(fileobj = io.BytesIO(blob))
         for info in tf.getmembers():
@@ -111,7 +112,16 @@ class TarIoTarFile(TarIo):
 
 class TarIoTarExec(TarIo):
 
+    @override
+    async def _extract(self, blob: bytes, root: str | None = None) -> None:
+        cmd = ['tar']
+        if root is not None:
+            cmd += ['-C', root]
+        cmd += ['-x', '-f', '-']
+        await self.dst.run(cmd, cmd_input = blob)
+
     @property
+    @override
     def dst(self) -> ExecContext:
         ret = super().dst
         if not isinstance(ret, ExecContext):
@@ -120,10 +130,3 @@ class TarIoTarExec(TarIo):
                 'context, which only has a file context'
             )
         return ret
-
-    async def _extract(self, blob: bytes, root: str | None = None) -> None:
-        cmd = ['tar']
-        if root is not None:
-            cmd += ['-C', root]
-        cmd += ['-x', '-f', '-']
-        await self.dst.run(cmd, cmd_input = blob)

src/python/jw/pkg/lib/Types.py

@@ -5,7 +5,7 @@ import os
 import re
 import sys
 
-from typing import TYPE_CHECKING, Generic, Iterable, TypeVar
+from typing import override, TYPE_CHECKING, Generic, Iterable, TypeVar
 
 from .log import ERR, OFF, log, parse_log_level
 
@@ -17,6 +17,7 @@ T = TypeVar('T')
 
 class Types(abc.ABC, Iterable[type[T]], Generic[T]):  # export
 
+    @override
     def __iter__(self) -> Iterator[type[T]]:
         return iter(self._classes())
 
@@ -64,6 +65,7 @@ class LoadTypes(Types[T]):  # export
         if self.__debug_level != OFF:
             log(self.__debug_level, *args, **kwargs)
 
+    @override
     def _stringify(self):
         tf = 'None' if self.__type_filter is None else (
             ', '.join([str(f) for f in self.__type_filter])
@@ -74,6 +76,7 @@ class LoadTypes(Types[T]):  # export
             'mod_names:        ' + ', '.join(self.__mod_names),
         ]
 
+    @override
     def _classes(self) -> Iterable[type[T]]:
 
         if self.__classes is None:

src/python/jw/pkg/lib/Uri.py

@@ -3,7 +3,7 @@ from __future__ import annotations
 import copy
 
 from functools import cached_property
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 if TYPE_CHECKING:
     import urllib.parse
@@ -39,9 +39,11 @@ class Uri:
         self.__username: str | None = None
         self.__password: str | None = None
 
+    @override
     def __repr__(self) -> str:
         return self.full
 
+    @override
     def __str__(self) -> str:
         return self.safe_full_with_username
 

src/python/jw/pkg/lib/distros/arch/Distro.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...Distro import Distro as Base
 
@@ -26,27 +26,32 @@ class Distro(Base):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    @override
     async def _ref(self) -> None:
         raise NotImplementedError(
             'distro refresh is not yet implemented for Arch-like distributions'
         )
 
+    @override
     async def _dup(self, download_only: bool) -> None:
         args = ['-Su']
         if download_only:
             args.append('-w')
         await self.pacman(args)
 
+    @override
     async def _reboot_required(self, verbose: bool) -> bool:
         raise NotImplementedError(
             'distro reboot-required is not yet implemented for Arch-like distributions'
         )
 
+    @override
     async def _select_by_name(self, names: Iterable[str]) -> Iterable[Package]:
         raise NotImplementedError(
             'distro select is not yet implemented for Arch-like distributions'
         )
 
+    @override
     async def _install(self, names: Iterable[str], only_update: bool) -> None:
         if only_update:
             raise NotImplementedError('--only-update is not yet implemented for pacman')
@@ -54,11 +59,13 @@ class Distro(Base):
         args.extend(names)
         await self.pacman(args)
 
+    @override
     async def _delete(self, names: Iterable[str]) -> None:
         raise NotImplementedError(
             'distro delete not yet implemented for Arch-like distributions'
         )
 
+    @override
     async def _pkg_files(self, name: str) -> Iterable[str]:
         raise NotImplementedError(
             'distro pkg ls yet implemented for Arch-like distributions'

src/python/jw/pkg/lib/distros/debian/Distro.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import os
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...Distro import Distro as Base
 from ...log import NOTICE, log
@@ -38,9 +38,11 @@ class Distro(Base):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    @override
     async def _ref(self) -> None:
         await self.apt_get(['update'])
 
+    @override
     async def _dup(self, download_only: bool) -> None:
         args: list[str] = []
         if download_only:
@@ -48,6 +50,7 @@ class Distro(Base):
         args.append('upgrade')
         await self.apt_get(args)
 
+    @override
     async def _reboot_required(self, verbose: bool) -> bool:
         reboot_required = '/run/reboot_required'
         if os.path.exists(reboot_required):
@@ -64,9 +67,11 @@ class Distro(Base):
             log(NOTICE, f"No. {reboot_required} doesn't exist.")
         return False
 
+    @override
     async def _select_by_name(self, names: Iterable[str]) -> Iterable[Package]:
         return await query_packages(names, ec = self.ctx)
 
+    @override
     async def _install(self, names: Iterable[str], only_update: bool) -> None:
         args = ['install']
         if only_update:
@@ -75,8 +80,10 @@ class Distro(Base):
         args.extend(names)
         await self.apt_get(args)
 
+    @override
     async def _delete(self, names: Iterable[str]) -> None:
         await self.dpkg(['-P', *names], sudo = True)
 
+    @override
     async def _pkg_files(self, name: str) -> Iterable[str]:
         return await list_files(name, ec = self.ctx)

src/python/jw/pkg/lib/distros/suse/Distro.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...Distro import Distro as Base
 from ...pm.rpm import list_files, query_packages, run_rpm
@@ -43,9 +43,11 @@ class Distro(Base):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
 
+    @override
     async def _ref(self) -> None:
         await self.zypper(['refresh'])
 
+    @override
     async def _dup(self, download_only: bool) -> None:
         args = ['dup']
         if download_only:
@@ -53,6 +55,7 @@ class Distro(Base):
         args += self.__update_extra_opts
         await self.zypper(args)
 
+    @override
     async def _reboot_required(self, verbose: bool) -> bool:
         opts = []
         if not verbose:
@@ -64,22 +67,27 @@ class Distro(Base):
             return True
         return False
 
+    @override
     async def _select_by_name(self, names: Iterable[str]) -> Iterable[Package]:
         return await query_packages(names, ec = self.ctx)
 
+    @override
     async def _install(self, names: Iterable[str], only_update: bool) -> None:
         cmd = ['update' if only_update else 'install']
         cmd += self.__update_extra_opts
         cmd += names
         await self.zypper(cmd)
 
+    @override
     async def _install_local_files(
         self, paths: Iterable[str], only_update: bool
     ) -> None:
         await self.rpm(['-U', '--reinstall', *paths])
 
+    @override
     async def _delete(self, names: Iterable[str]) -> None:
         await self.rpm(['-e', *names], sudo = True)
 
+    @override
     async def _pkg_files(self, name: str) -> Iterable[str]:
         return await list_files(name, ec = self.ctx)

src/python/jw/pkg/lib/ec/Curl.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ..FileContext import FileContext as Base
 
@@ -28,6 +28,7 @@ class Curl(Base):
 
         self.__ec = ec if ec else __local()
 
+    @override
     async def _get(
         self, path: str, wd: str | None, throw: bool, verbose: bool | None, title: str
     ) -> Result:

src/python/jw/pkg/lib/ec/Local.py

@@ -7,7 +7,7 @@ import pwd
 import sys
 
 from functools import cache
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ..base import Result, StatResult
 from ..ExecContext import ExecContext as Base
@@ -25,6 +25,7 @@ class Local(Base):
     def _username(self) -> str:
         return pwd.getpwuid(os.getuid()).pw_name
 
+    @override
     async def _run(
         self,
         cmd: list[str],
@@ -155,9 +156,11 @@ class Local(Base):
             if cwd is not None:
                 os.chdir(cwd)
 
+    @override
     async def _unlink(self, path: str) -> None:
         os.unlink(path)
 
+    @override
     async def _erase(self, path: str) -> None:
         if os.path.isdir(path):
             import shutil
@@ -165,26 +168,33 @@ class Local(Base):
             return
         os.unlink(path)
 
+    @override
     async def _rename(self, src: str, dst: str) -> None:
         os.rename(src, dst)
 
+    @override
     async def _mkdir(self, path: str, mode: int) -> None:
         os.mkdir(path, mode)
 
+    @override
     async def _stat(self, path: str, follow_symlinks: bool) -> StatResult:
         return StatResult.from_os(os.stat(path, follow_symlinks = follow_symlinks))
 
+    @override
     async def _file_exists(self, path: str) -> bool:
         return os.path.exists(path)
 
+    @override
     async def _chown(self, path: str, owner: str | None, group: str | None) -> None:
         uid = pwd.getpwnam(owner).pw_uid if owner else -1
         gid = grp.getgrnam(group).gr_gid if group else -1
         os.chown(path, uid, gid)
 
+    @override
     async def _chmod(self, path: str, mode: int) -> None:
         os.chmod(path, mode)
 
+    @override
     async def _is_dir(self, path: str, follow_symlinks: bool) -> bool:
         if (not follow_symlinks) and os.path.islink(path):
             return False

src/python/jw/pkg/lib/ec/SSHClient.py

@@ -5,7 +5,7 @@ import os
 import pwd
 
 from enum import Flag, auto
-from typing import TYPE_CHECKING
+from typing import TYPE_CHECKING, override
 
 from ..ExecContext import ExecContext
 from ..log import DEBUG, ERR, INFO, NOTICE, get_caller_pos, log, log_m
@@ -42,6 +42,7 @@ class SSHClient(ExecContext):
     ) -> Result:
         pass
 
+    @override
     async def _run(
         self,
         cmd: list[str],
@@ -102,6 +103,7 @@ class SSHClient(ExecContext):
         return self.uri.port
 
     @property
+    @override
     def username(self) -> str | None:
         return self.uri.username
 

src/python/jw/pkg/lib/ec/ssh/AsyncSSH.py

@@ -1,3 +1,4 @@
+from typing import override
 import asyncio
 import os
 import shlex
@@ -42,10 +43,12 @@ class AsyncSSH(Base):
         self.__connect_timeout = connect_timeout
         self.__conn: asyncssh.SSHClientConnection | None = None
 
+    @override
     async def _open(self) -> None:
         await super()._open()
         await self._conn
 
+    @override
     async def _close(self) -> None:
         if self.__conn is not None:
             try:
@@ -355,6 +358,7 @@ class AsyncSSH(Base):
         stdout = b''.join(stdout_parts) if stdout_parts else None
         return Result(stdout, None, exit_code, cmd = cmd)
 
+    @override
     async def _run_ssh(
         self,
         cmd: list[str],

src/python/jw/pkg/lib/ec/ssh/Exec.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 
 import os
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 from ...base import InputMode
 from ...util import run_cmd
@@ -48,6 +48,7 @@ class Exec(Base):
                 self.__askpass_orig[key] = os.getenv(key)
                 os.environ[key] = val
 
+    @override
     async def _run_ssh(
         self,
         cmd: list[str],

src/python/jw/pkg/lib/ec/ssh/Paramiko.py

@@ -1,6 +1,6 @@
 from __future__ import annotations
 
-from typing import TYPE_CHECKING
+from typing import override, TYPE_CHECKING
 
 # Tolerate missing paramiko imports. jw-pkg is designed to work with what it
 # finds.
@@ -52,15 +52,18 @@ class Paramiko(Base):
     def __scp(self) -> Any:
         return paramiko.SCPClient(self.__client.get_transport())
 
+    @override
     async def _open(self) -> None:
         await super()._open()
         self.__client
 
+    @override
     async def _close(self) -> None:
         if self.___client is not None:
             self.___client.close()
             self.___client = None
 
+    @override
     async def _run_ssh(
         self,
         cmd: list[str],