switch from alejandra -> nixpkgs-fmt

alejandra has someone questionable choices for formatting that no one would apply to there code if they would format manually.
nixpkgs-fmt seems to produce more readable results.

templates/python-project/default.nix

@@ -1,11 +1,11 @@
-{
-  pkgs ? import <nixpkgs> {},
-
-  lib ? pkgs.lib,
-  python3 ? pkgs.python3,
-  ruff ? pkgs.ruff,
-  runCommand ? pkgs.runCommand,
-}: let
+{ pkgs ? import <nixpkgs> { }
+, lib ? pkgs.lib
+, python3 ? pkgs.python3
+, ruff ? pkgs.ruff
+, runCommand ? pkgs.runCommand
+,
+}:
+let
   pyproject = builtins.fromTOML (builtins.readFile ./pyproject.toml);
   name = pyproject.project.name;
 
@@ -37,14 +37,14 @@
     ];
     propagatedBuildInputs =
       dependencies
-      ++ [];
-    passthru.tests = {inherit check;};
+      ++ [ ];
+    passthru.tests = { inherit check; };
     passthru.devDependencies = devDependencies;
   };
 
   checkPython = python3.withPackages (ps: devDependencies ++ dependencies);
 
-  check = runCommand "${name}-check" {} ''
+  check = runCommand "${name}-check" { } ''
     cp -r ${src} ./src
     chmod +w -R ./src
     cd src
@@ -59,4 +59,4 @@
   '';
 
 in
-  package
+package

templates/python-project/flake-module.nix

@@ -1,10 +1,12 @@
 {
-  perSystem = {pkgs, ...}: let
-    pyproject = builtins.fromTOML (builtins.readFile ./pyproject.toml);
-    name = pyproject.project.name;
-    package = pkgs.callPackage ./default.nix {};
-  in {
-    # packages.${name} = package;
-    checks.python-template = package.tests.check;
-  };
+  perSystem = { pkgs, ... }:
+    let
+      pyproject = builtins.fromTOML (builtins.readFile ./pyproject.toml);
+      name = pyproject.project.name;
+      package = pkgs.callPackage ./default.nix { };
+    in
+    {
+      # packages.${name} = package;
+      checks.python-template = package.tests.check;
+    };
 }

templates/python-project/shell.nix

@@ -1,7 +1,8 @@
-{
-  pkgs ? import <nixpkgs> {},
-  system ? builtins.currentSystem,
-}: let
+{ pkgs ? import <nixpkgs> { }
+, system ? builtins.currentSystem
+,
+}:
+let
   lib = pkgs.lib;
   python3 = pkgs.python3;
   package = import ./default.nix {
@@ -9,11 +10,11 @@
   };
   pythonWithDeps = python3.withPackages (
     ps:
-      package.propagatedBuildInputs
-      ++ package.devDependencies
-      ++ [
-        ps.pip
-      ]
+    package.propagatedBuildInputs
+    ++ package.devDependencies
+    ++ [
+      ps.pip
+    ]
   );
   checkScript = pkgs.writeScriptBin "check" ''
     nix build -f . tests.check -L "$@"
@@ -43,4 +44,4 @@
     '';
   };
 in
-  devShell
+devShell