meta pkg: set version as today (#13906)

(cherry picked from commit c136ef5)

Author: Borda

.actions/setup_tools.py

@@ -20,6 +20,7 @@
 import tarfile
 import tempfile
 import urllib.request
+from datetime import datetime
 from importlib.util import module_from_spec, spec_from_file_location
 from itertools import groupby
 from types import ModuleType
@@ -360,6 +361,20 @@ class implementations by cross-imports to the true package.
             fp.writelines(lines)
 
 
+def set_version_today(fpath: str) -> None:
+    """Replace the template date with today."""
+    with open(fpath) as fp:
+        lines = fp.readlines()
+
+    def _replace_today(ln):
+        today = datetime.now()
+        return ln.replace("YYYY.-M.-D", f"{today.year}.{today.month}.{today.day}")
+
+    lines = list(map(_replace_today, lines))
+    with open(fpath, "w") as fp:
+        fp.writelines(lines)
+
+
 def _download_frontend(root: str = _PROJECT_ROOT):
     """Downloads an archive file for a specific release of the Lightning frontend and extracts it to the correct
     directory."""

setup.py

@@ -59,7 +59,8 @@
 # https://packaging.python.org/guides/single-sourcing-package-version/
 # http://blog.ionelmc.ro/2014/05/25/python-packaging/
 _PATH_ROOT = os.path.dirname(__file__)
-_PATH_SETUP = os.path.join(_PATH_ROOT, "src", _REAL_PKG_NAME or "lightning", "__setup__.py")
+_PATH_SRC = os.path.join(_PATH_ROOT, "src")
+_PATH_SETUP = os.path.join(_PATH_SRC, _REAL_PKG_NAME or "lightning", "__setup__.py")
 
 
 # Hardcode the env variable from time of package creation, otherwise it fails during installation
@@ -88,6 +89,7 @@ def _load_py_module(name: str, location: str) -> ModuleType:
 # engineer specific practices
 if __name__ == "__main__":
     _SETUP_TOOLS = _load_py_module(name="setup_tools", location=os.path.join(".actions", "setup_tools.py"))
+    _SETUP_TOOLS.set_version_today(os.path.join(_PATH_SRC, "lightning", "__version__.py"))
     for lit_name, pkg_name in _PACKAGE_MAPPING.items():
         # fixme: if we run creation of meta pkg against stable we shall pull the source
         _SETUP_TOOLS.create_meta_package(os.path.join(_PATH_ROOT, "src"), pkg_name, lit_name)

src/lightning/__version__.py

@@ -1 +1 @@
-version = "2022.7.25"
+version = "YYYY.-M.-D"