chore: update flakes

flake.nix

@@ -3,7 +3,8 @@
     nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
   };
 
-	outputs = { self, nixpkgs }:
+  outputs =
+    { self, nixpkgs }:
     let
       inherit (nixpkgs.lib)
         genAttrs
@@ -13,19 +14,20 @@
         sourceByRegex
         ;
 
-			eachSystem = f: genAttrs
-				[
+      eachSystem =
+        f:
+        genAttrs [
           "aarch64-darwin"
           "aarch64-linux"
           "x86_64-darwin"
           "x86_64-linux"
-				]
-				(system: f nixpkgs.legacyPackages.${system});
+        ] (system: f nixpkgs.legacyPackages.${system});
     in
     {
-			formatter = eachSystem (pkgs: pkgs.nixpkgs-fmt);
+      formatter = eachSystem (pkgs: pkgs.nixfmt-rfc-style);
 
-			packages = eachSystem (pkgs:
+      packages = eachSystem (
+        pkgs:
         let
           src = sourceByRegex self [
             "(core)(/.*)?"
@@ -42,8 +44,7 @@
             ;
         in
         {
-					default = 
-						rustPlatform.buildRustPackage {
+          default = rustPlatform.buildRustPackage {
             pname = "pay-respects";
             inherit ((importTOML (src + "/core/Cargo.toml")).package) version;
 
@@ -64,6 +65,7 @@
               mainProgram = "pay-respects";
             };
           };
-				});
+        }
+      );
     };
 }