anitya: support to use anitya ID

docs/usage.rst

@@ -757,6 +757,11 @@ This enables you to track updates from `Anitya <https://release-monitoring.org/>
 anitya
   ``distro/package``, where ``distro`` can be a lot of things like "fedora", "arch linux", "gentoo", etc. ``package`` is the package name of the chosen distribution.
 
+anitya_id
+  The identifier of the project/package in anitya.
+
+Note that either anitya or anitya_id needs to be specified, anitya_id is preferred when both specified.
+
 Check Android SDK
 ~~~~~~~~~~~~~~~~~
 ::

nvchecker_source/anitya.py

@@ -6,6 +6,8 @@ from nvchecker.api import RichResult
 URL = 'https://release-monitoring.org/api/project/{pkg}'
 
 async def get_version(name, conf, *, cache, **kwargs):
+  pkg = conf.get('anitya_id')
+  if pkg is None:
     pkg = conf.get('anitya')
   url = URL.format(pkg = pkg)
   data = await cache.get_json(url)

tests/test_anitya.py

@@ -13,3 +13,10 @@ async def test_anitya(get_version):
     "anitya": "fedora/shutter",
   })
   assert re.match(r"[0-9.]+", version)
+
+async def test_anitya_by_id(get_version):
+  version = await get_version("shutter", {
+    "source": "anitya",
+    "anitya_id": "4813",
+  })
+  assert re.match(r"[0-9.]+", version)