add n0emis, some packages and pre-yate-n0emis

packages/python/ywsd/count.patch

@@ -0,0 +1,14 @@
+diff --git a/ywsd/objects.py b/ywsd/objects.py
+index 4ce29fb..a535e76 100644
+--- a/ywsd/objects.py
++++ b/ywsd/objects.py
+@@ -178,7 +178,8 @@ class ActiveCall:
+     async def is_active_call(cls, username, x_eventphone_id, db_connection):
+         return (
+             await db_connection.scalar(
+-                cls.table.count()
++                sa.select(sa.func.count('*'))
++                .select_from(cls.table)
+                 .where(cls.table.c.username == username)
+                 .where(cls.table.c.x_eventphone_id == x_eventphone_id)
+             )

packages/python/ywsd/default.nix

@@ -0,0 +1,20 @@
+{ lib, buildPythonApplication, fetchFromGitHub, aiopg, aiohttp, python-yate
+, pyyaml, sqlalchemy }:
+
+buildPythonApplication rec {
+  pname = "ywsd";
+  version = "0.11.0";
+
+  src = fetchFromGitHub {
+    owner = "eventphone";
+    repo = pname;
+    rev = "v${version}";
+    sha256 = "sha256-9DloJSKR3Ck4Bsc0ICcAAD6LHIMeOHTe2rCx6nPINT4=";
+  };
+
+  patches = [ ./count.patch ];
+
+  propagatedBuildInputs = [ aiopg aiohttp python-yate pyyaml sqlalchemy ];
+
+  doCheck = false;
+}