move more to config/packages

configs/packages/python.nix

@@ -0,0 +1,28 @@
+{ pkgs, ... }:
+{
+  environment.systemPackages = [
+    (pkgs.python3.withPackages
+      (py: [
+        py.black
+        py.python-language-server
+        py.pyls-mypy
+        py.pyls-black
+        py.pyls-isort
+        py.flake8
+        py.flask
+        py.pygments
+        py.docopt
+        py.schema
+        py.ansicolors
+        py.virtualenv
+        py.spacy
+        py.spacy_models
+      ])
+    )
+  ];
+
+  home-manager.users.me.xdg.configFile."pycodestyle".text = ''
+    [pycodestyle]
+    max-line-length = 110
+  '';
+}