make: Fix CONFIG_SUBDIR

The existence of CONFIG_SUBDIR hijacks INSTALL_CFGDIR to a subdirectory (by
default /etc/opt/<package>/$(CONFIG_SUBDIR)). Then std_install_rules apply,
and (the bent) INSTALL_CFGDIR is installed, but its parent directory, the
original $(INSTALL_CFGDIR), is not a prerequisite of install anylonger, and
has no rule anymore, hence log-install is never run for it. Instead it's
implicitly created by log-install -D $(INSTALL_CFGDIR).

This commit gives /etc/opt/<package> std-install rule and variables back as
CFGTOPDIR variants, and inserts it early into the install target's
prerequisite list.

Signed-off-by: Jan Lindemann <jan@janware.com>

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

@@ -5,7 +5,7 @@ import os
 import re
 import sys
 
-from typing import TYPE_CHECKING, Any, Generic, Iterable, TypeVar, override
+from typing import TYPE_CHECKING, Any, Generic, Iterable, TypeGuard, TypeVar, override
 
 from .log import ERR, OFF, log, parse_log_level
 
@@ -15,6 +15,9 @@ if TYPE_CHECKING:
 
 T = TypeVar('T')
 
+def is_abc_class(c: type[object]) -> TypeGuard[abc.ABCMeta]:
+    return isinstance(c, abc.ABCMeta)
+
 class Types(abc.ABC, Iterable[type[T]], Generic[T]):  # export
 
     @override
@@ -101,6 +104,9 @@ class LoadTypes(Types[T]):  # export
                     if rx is not None and not re.match(rx, member_name):
                         self._debug(f'o "{name}" has wrong name')
                         continue
+                    if not is_abc_class(c):
+                        self._debug(f'o "{name}" is not derived from ABCMeta')
+                        continue
                     if inspect.isabstract(c):
                         self._debug(f'o "{name}" is abstract: {c.__abstractmethods__}')
                         continue