feat: introduce treefmt and fmt all

nix/modules/flake-parts/perSystem/default.nix

@@ -1,38 +1,37 @@
+{ pkgs, ... }:
 {
-  inputs',
-  system,
-  config,
-  lib,
-  pkgs,
-  ...
-}: {
   packages = {
-    myPython = pkgs.python310.withPackages (ps:
+    myPython = pkgs.python310.withPackages (
+      ps:
       with ps;
-        [
-          pep8
-          yapf
-          flake8
-          # autopep8 (broken)
-          # pylint (broken)
-          ipython
-          llfuse
-          dugong
-          defusedxml
-          wheel
-          pip
-          virtualenv
-          cffi
-          # pyopenssl
-          urllib3
-          # mistune (insecure)
-          sympy
+      [
+        pep8
+        yapf
+        flake8
+        # autopep8 (broken)
+        # pylint (broken)
+        ipython
+        llfuse
+        dugong
+        defusedxml
+        wheel
+        pip
+        virtualenv
+        cffi
+        # pyopenssl
+        urllib3
+        # mistune (insecure)
+        sympy
 
-          flask
+        flask
 
-          pyaml
-          requests
-        ]
-        ++ [pkgs.pypi2nix pkgs.libffi]);
+        pyaml
+        requests
+      ]
+      ++ [
+        pkgs.pypi2nix
+        pkgs.libffi
+      ]
+    );
   };
 }