Alejandra formatting

flake.nix

@@ -11,9 +11,8 @@
     treefmt-nix.url = "github:numtide/treefmt-nix";
   };
 
-  outputs =
-    inputs@{ flake-parts, ... }:
-    flake-parts.lib.mkFlake { inherit inputs; } {
+  outputs = inputs @ {flake-parts, ...}:
+    flake-parts.lib.mkFlake {inherit inputs;} {
       imports = [
         # To import a flake module
         # 1. Add foo to inputs
@@ -30,39 +29,32 @@
         # "aarch64-darwin"
         # "x86_64-darwin"
       ];
-      perSystem =
-        {
+      flake = {
+        # The usual flake attributes can be defined here, including system-
+        # agnostic ones like nixosModule and system-enumerating ones, although
+        # those are more easily expressed in perSystem.
+      };
+      perSystem = {
         config,
         self',
         inputs',
         pkgs,
         system,
         ...
-        }:
-        {
+      }: {
         # Per-system attributes can be defined here. The self' and inputs'
         # module parameters provide easy access to attributes of the same
         # system.
 
         # Equivalent to  inputs'.nixpkgs.legacyPackages.hello;
-          packages.default = pkgs.hello;
-
-          pre-commit = {
-            settings.hooks = {
-              mdformat.enable = true;
-              nixfmt-rfc-style.enable = true;
-              prettier.enable = true;
-              prettier.excludes = [
-                ".*\.md"
-                "flake.lock"
-              ];
-              stylish-haskell.enable = true;
-            };
-          };
+        # packages.default = pkgs.hello;
+        packages.default = config.packages.osds-site;
 
         devshells.default = {
           packages = with pkgs; [
             cowsay
+
+            alejandra
           ];
         };
 
@@ -79,23 +71,25 @@
           };
         };
 
-          treefmt = {
-            programs = {
+        pre-commit = {
+          settings.hooks = {
+            alejandra.enable = true;
             mdformat.enable = true;
-              nixfmt.enable = true;
-              nixfmt.package = pkgs.nixfmt-rfc-style;
             prettier.enable = true;
-              prettier.excludes = [ "*.md" ];
+            prettier.excludes = [".*\.md" "flake.lock"];
             stylish-haskell.enable = true;
           };
         };
 
+        treefmt = {
+          programs = {
+            alejandra.enable = true;
+            mdformat.enable = true;
+            prettier.enable = true;
+            prettier.excludes = ["*.md"];
+            stylish-haskell.enable = true;
+          };
         };
-      flake = {
-        # The usual flake attributes can be defined here, including system-
-        # agnostic ones like nixosModule and system-enumerating ones, although
-        # those are more easily expressed in perSystem.
-
       };
     };
 }