switch from using dataset to raw sqlite3 module

dataset is kinda unmaintaned and currently broken due to sqlalchemy 2.0 changes

resolves https://github.com/karlicoss/HPI/issues/264

my/core/sqlite.py

@@ -1,17 +1,19 @@
 from .common import assert_subpackage; assert_subpackage(__name__)
 
 
+from contextlib import contextmanager
 from pathlib import Path
 import shutil
 import sqlite3
 from tempfile import TemporaryDirectory
+from typing import Tuple, Any, Iterator, Callable, Optional, Union
 
 
-from .common import PathIsh
+from .common import PathIsh, assert_never
+from .compat import Literal
 
 
 def sqlite_connect_immutable(db: PathIsh) -> sqlite3.Connection:
-    # https://www.sqlite.org/draft/uri.html#uriimmutable
     return sqlite3.connect(f'file:{db}?immutable=1', uri=True)
 
 
@@ -30,6 +32,42 @@ def test_sqlite_connect_immutable(tmp_path: Path) -> None:
         conn.execute('DROP TABLE testtable')
 
 
+SqliteRowFactory = Callable[[sqlite3.Cursor, sqlite3.Row], Any]
+
+def dict_factory(cursor, row):
+    fields = [column[0] for column in cursor.description]
+    return {key: value for key, value in zip(fields, row)}
+
+
+Factory = Union[SqliteRowFactory, Literal['row', 'dict']]
+
+@contextmanager
+def sqlite_connection(db: PathIsh, *, immutable: bool=False, row_factory: Optional[Factory]=None) -> Iterator[sqlite3.Connection]:
+    dbp = f'file:{db}'
+    # https://www.sqlite.org/draft/uri.html#uriimmutable
+    if immutable:
+        dbp = f'{dbp}?immutable=1'
+    row_factory_: Any = None
+    if row_factory is not None:
+        if callable(row_factory):
+            row_factory_ = row_factory
+        elif row_factory == 'row':
+            row_factory_ = sqlite3.Row
+        elif row_factory == 'dict':
+            row_factory_ = dict_factory
+        else:
+            assert_never()
+
+    conn = sqlite3.connect(dbp, uri=True)
+    try:
+        conn.row_factory = row_factory_
+        with conn:
+            yield conn
+    finally:
+        # Connection context manager isn't actually closing the connection, only keeps transaction
+        conn.close()
+
+
 # TODO come up with a better name?
 # NOTE: this is tested by tests/sqlite.py::test_sqlite_read_with_wal
 def sqlite_copy_and_open(db: PathIsh) -> sqlite3.Connection:
@@ -52,8 +90,6 @@ def sqlite_copy_and_open(db: PathIsh) -> sqlite3.Connection:
     return dest
 
 
-from typing import Tuple, Any, Iterator
-
 # NOTE hmm, so this kinda works
 # V = TypeVar('V', bound=Tuple[Any, ...])
 # def select(cols: V, rest: str, *, db: sqlite3.Connetion) -> Iterator[V]: