Remove version.py

It should be more reliable to put the version in our pyproject file and
then use importlib.metadata when we want to read the package version.

We add a settings.PROMGEN_VERSION as a convenience internally for getting
the version number.

docs/conf.py

@@ -23,7 +23,7 @@
 import django
 django.setup()
 
-from promgen.version import __version__
+from django.conf import settings
 
 
 # -- General configuration ------------------------------------------------
@@ -67,9 +67,9 @@
 # built documents.
 #
 # The short X.Y version.
-version = __version__
+version = settings.PROMGEN_VERSION
 # The full version, including alpha/beta/rc tags.
-release = __version__
+release = settings.PROMGEN_VERSION
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

promgen/context_processors.py

@@ -2,12 +2,13 @@
 # These sources are released under the terms of the MIT license: see LICENSE
 
 from promgen import models, util
-from promgen.version import __version__
+
+from django.conf import settings
 
 
 def settings_in_view(request):
     return {
         "TIMEZONE": util.setting("timezone", "UTC"),
-        "VERSION": __version__,
+        "VERSION": settings.PROMGEN_VERSION,
         "DEFAULT_EXPORTERS": models.DefaultExporter.objects.order_by("job", "-port"),
     }

promgen/settings.py

@@ -13,6 +13,7 @@
 https://docs.djangoproject.com/en/1.10/ref/settings/
 """
 
+import importlib.metadata
 import os
 import pathlib
 
@@ -23,11 +24,11 @@
 
 from promgen import PROMGEN_CONFIG_FILE
 from promgen.plugins import apps_from_setuptools
-from promgen.version import __version__
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = pathlib.Path(__file__).parent.parent
 DOT_ENV = BASE_DIR / ".env"
+PROMGEN_VERSION = importlib.metadata.version("promgen")
 
 # Load our environment
 env = environ.Env()
@@ -177,7 +178,7 @@
     from sentry_sdk.integrations.django import DjangoIntegration
     from sentry_sdk.integrations.celery import CeleryIntegration
 
-    os.environ.setdefault("SENTRY_RELEASE", __version__)
+    os.environ.setdefault("SENTRY_RELEASE", PROMGEN_VERSION)
     # By default we want to keep sentry's default of NOT sending user
     # information, but in some environments, it's useful for debugging
     # purposes so lets add a flag here that we can use.

promgen/util.py

@@ -9,13 +9,12 @@
 from django.conf import settings
 from django.db.models import F
 
-from promgen.version import __version__
 
 # Wrappers around request api to ensure we always attach our user agent
 # https://github.com/requests/requests/blob/master/requests/api.py
 
 
-USER_AGENT = f"promgen/{__version__}"
+USER_AGENT = f"promgen/{settings.PROMGEN_VERSION}"
 ACCEPT_HEADER = (
     "application/openmetrics-text; version=0.0.1,text/plain;version=0.0.4;q=0.5,*/*;q=0.1"
 )

promgen/views.py

@@ -25,10 +25,10 @@
     signals,
     tasks,
     util,
-    version,
 )
 from promgen.shortcuts import resolve_domain
 
+from django.conf import settings
 from django.contrib import messages
 from django.contrib.auth.mixins import LoginRequiredMixin
 from django.contrib.contenttypes.models import ContentType
@@ -1064,7 +1064,7 @@ def collect(self):
         v = GaugeMetricFamily(
             "promgen_build_info", "Promgen Information", labels=["version", "python"]
         )
-        v.add_metric([version.__version__, platform.python_version()], 1)
+        v.add_metric([settings.PROMGEN_VERSION, platform.python_version()], 1)
         yield v
 
         try: