add daemon-level version

CHANGELOG.md

@@ -9,6 +9,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/).
 - added changelog
 - Use format strings instead of assuming concatenation
 - added mypy to precommit
+- added daemon-level version, see [YEP-105](https://yeps.yaq.fyi/105/)
 
 ### Changed
 - from now on, yaqd-gdrive will use calendar based versioning

yaqd_gdrive/__init__.py

+from .__version__ import *
 from ._gdrive import *

yaqd_gdrive/__version__.py

+"""Define version."""
+
+
+import pathlib
+
+
+here = pathlib.Path(__file__).resolve().parent
+
+
+__all__ = ["__version__", "__branch__"]
+
+
+# read from VERSION file
+with open(str(here / "VERSION")) as f:
+    __version__ = f.read().strip()
+
+
+# add git branch, if appropriate
+p = here.parent / ".git"
+if p.is_file():
+    with open(str(p)) as f:
+        p = p.parent / f.readline()[8:].strip()  # Strip "gitdir: "
+p = p / "HEAD"
+if p.exists():
+    with open(str(p)) as f:
+        __branch__ = f.readline().rstrip().split(r"/")[-1]
+    __version__ += "+" + __branch__
+else:
+    __branch__ = ""

yaqd_gdrive/_gdrive.py

@@ -14,6 +14,8 @@ import aiohttp.web  # type: ignore
 import appdirs  # type: ignore
 import yaqd_core
 
+from .__version__ import __branch__
+
 
 UploadItem = collections.namedtuple(
     "UploadItem", "kind name path parent client_id", defaults=[None]
@@ -39,6 +41,7 @@ def refresh_oauth(func):
 
 class GDrive(yaqd_core.Base):
     _kind = "gdrive"
+    _version = "1.0.0" + f"+{__branch__}" if __branch__ else ""
     defaults = {
         "scopes": ["https://www.googleapis.com/auth/drive.file"],
         "authorization_url": "https://accounts.google.com/o/oauth2/v2/auth",