diff --git a/hm/dev/python.nix b/hm/dev/python.nix
index d03e511..4d9ec18 100644
--- a/hm/dev/python.nix
+++ b/hm/dev/python.nix
@@ -22,16 +22,29 @@
       ruff = {
         enable = true;
         settings = {
+          target-version = "py311"; # Matches Debian 12
+          line-length = 79; # writePython3 enforces PEP-8
           lint = {
-            select = [
-              # Original
-              "F" # pyflakes
-              "I" # isort
-              "C90" # mccabe (complexity)
-              "E" # pycodestyle error
-              "W" # pycodestyle warning
-              "PL" # pylint
+            select = [ "ALL" ];
+            ignore = [
+              # Things that don't teach me to write better Python
+              "CPY" # Copyright
+              "D1" # missing docstring
+              "ERA" # commented out code
+              "FIX002" # enforce TODOs
+              "T20" # print
+              "TD" # TODOs convention
+              "INP" # missing __init__.py
+              "S603" # subproces untrusted input (broken?)
+              "S101" # asserts
+              # Allow nix-shell
+              "EXE003"
+              "EXE005"
+              # Conflict with formatter
+              "COM"
+              "ISC001"
             ];
+            pydocstyle.convention = "pep257";
           };
         };
       };