Update neovim setup

Switch from pyright to python-lsp-server

tasks/neovim.yml

@@ -20,25 +20,20 @@
     version: '{{ item.version|default("HEAD") }}'
   loop: '{{ neovim_plugins }}'
 
-- name: install neovim python packages
-  pip:
-    name:
-      - neovim
-      - pynvim
-    extra_args: --user
-
 - name: install neovim node package
   become: true
   npm:
     name: neovim
     global: true
 
+# Note that the "python-lsp-server", "python-lsp-ruff" and "neovim" python
+# packages should be installed to the corresponding virtualenv as well.
 - name: install language servers
   become: true
-  npm:
+  package:
     name: '{{ item }}'
-    global: true
-  loop: '{{ language_servers + neovim_node_packages }}'
+    state: present
+  loop: '{{ language_servers }}'
 
 - name: remove old neovim configuration file
   file: