add hooks and python tooling

Signed-off-by: Florian Brandes <florian.brandes@posteo.de>

devenv.nix

@@ -1,4 +1,9 @@
-{ pkgs, lib, config, inputs, ... }:
+{ pkgs
+, lib
+, config
+, inputs
+, ...
+}:
 
 {
   # https://devenv.sh/basics/
@@ -26,9 +31,29 @@
 
   # https://devenv.sh/languages/
   languages.nix.enable = true;
-  languages.python.enable = true;
+  languages.python = {
+    enable = true;
+    venv = {
+      enable = true;
+      requirements = ./requirements.txt;
+    };
+  };
 
   # https://devenv.sh/pre-commit-hooks/
+  pre-commit.hooks = {
+    nixpkgs-fmt.enable = true;
+    # remove unused imports
+    autoflake.enable = true;
+    # formatter
+    black.enable = true;
+    # sort imports
+    isort.enable = true;
+    # look for code smell
+    pylint.enable = true;
+    detect-private-keys.enable = true;
+
+
+  };
   # pre-commit.hooks.shellcheck.enable = true;
 
   # https://devenv.sh/processes/