rf: import PRE_INIT_COMMIT_SHA from datalad_core

In an effort to trim dependencies on legacy datalad.

Author: mih

datalad_next/consts/__init__.py

@@ -16,6 +16,13 @@
   ``True`` if executed on the Windows platform.
 """
 
+__all__ = [
+    'COPY_BUFSIZE',
+    'PRE_INIT_COMMIT_SHA',
+    'on_linux',
+    'on_windows',
+]
+
 # import from "utils", but these really are constants
 from datalad.utils import (
     on_linux,
@@ -29,4 +36,4 @@
     # from PY3.10
     COPY_BUFSIZE = 1024 * 1024 if on_windows else 64 * 1024
 
-from datalad.consts import PRE_INIT_COMMIT_SHA
+from datalad_core.consts import PRE_INIT_COMMIT_SHA

pyproject.toml

@@ -36,6 +36,7 @@ classifiers = [
 dependencies = [
   "annexremote",
   "datalad >= 0.18.4",
+  "datalad-core",
   "datasalad >= 0.5.0",
   "humanize",
   "more-itertools",