diff --git a/.github/workflows/build-machines-and-homes.yml b/.github/workflows/build-machines-and-homes.yml
index 6995a7a..563a44c 100644
--- a/.github/workflows/build-machines-and-homes.yml
+++ b/.github/workflows/build-machines-and-homes.yml
@@ -76,11 +76,16 @@ jobs:
         if: '!cancelled()'
         run: |
           package=".#nixosConfigurations."${{ matrix.machine }}".config.system.build.toplevel"
-          nix run git+https://git.cy7.sh/cy/nixcp.git -- \
-            --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
-            -u https://nix-community.cachix.org \
-            -u https://nixcache.cy7.sh \
-            $package
+          derivations=()
+          while IFS=$'\n' read derivation; do
+              derivations+=("$derivation")
+          done < <(nix path-info --derivation "$package")
+
+          for derivation in "${derivations[@]}"; do
+              nix copy -j8 \
+                --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
+                $(nix-store --query --requisites --include-outputs "$derivation")
+          done
 
   build-homes:
     strategy:
@@ -148,8 +153,13 @@ jobs:
         if: '!cancelled()'
         run: |
           package=".#homeConfigurations."${{ matrix.home }}".activationPackage"
-          nix run git+https://git.cy7.sh/cy/nixcp.git -- \
-            --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
-            -u https://nix-community.cachix.org \
-            -u https://nixcache.cy7.sh \
-            $package
+          derivations=()
+          while IFS=$'\n' read derivation; do
+              derivations+=("$derivation")
+          done < <(nix path-info --derivation "$package")
+
+          for derivation in "${derivations[@]}"; do
+              nix copy -j8 \
+                --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
+                $(nix-store --query --requisites --include-outputs "$derivation")
+          done
diff --git a/.github/workflows/build-packages.yml b/.github/workflows/build-packages.yml
index ce4afd1..fea88fc 100644
--- a/.github/workflows/build-packages.yml
+++ b/.github/workflows/build-packages.yml
@@ -64,11 +64,16 @@ jobs:
         # https://stackoverflow.com/a/58859404
         if: '!cancelled()'
         run: |
-          nix run git+https://git.cy7.sh/cy/nixcp.git -- \
-            --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
-            -u https://nix-community.cachix.org \
-            -u https://nixcache.cy7.sh \
-            "${{ matrix.package }}"
+          derivations=()
+          while IFS=$'\n' read derivation; do
+              derivations+=("$derivation")
+          done < <(nix path-info --derivation "${{ matrix.package }}")
+
+          for derivation in "${derivations[@]}"; do
+              nix copy -j8 \
+                --to 's3://nixcache?endpoint=s3.cy7.sh&secret-key=/home/runner/cache-priv-key.pem' \
+                $(nix-store --query --requisites --include-outputs "$derivation")
+          done
 
       - name: prepare tarball to upload
         run: nix run github:nixos/nixpkgs#gnutar hcvf result.tar result
diff --git a/flake.lock b/flake.lock
index 480ec6e..df19b3b 100644
--- a/flake.lock
+++ b/flake.lock
@@ -273,7 +273,9 @@
     },
     "flake-parts_2": {
       "inputs": {
-        "nixpkgs-lib": "nixpkgs-lib"
+        "nixpkgs-lib": [
+          "nixpkgs"
+        ]
       },
       "locked": {
         "lastModified": 1741352980,
@@ -761,21 +763,6 @@
         "type": "github"
       }
     },
-    "nixpkgs-lib": {
-      "locked": {
-        "lastModified": 1743296961,
-        "narHash": "sha256-b1EdN3cULCqtorQ4QeWgLMrd5ZGOjLSLemfa00heasc=",
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "rev": "e4822aea2a6d1cdd36653c134cacfd64c97ff4fa",
-        "type": "github"
-      },
-      "original": {
-        "owner": "nix-community",
-        "repo": "nixpkgs.lib",
-        "type": "github"
-      }
-    },
     "nixpkgs-stable": {
       "locked": {
         "lastModified": 1730741070,
diff --git a/flake.nix b/flake.nix
index 525c090..3093168 100644
--- a/flake.nix
+++ b/flake.nix
@@ -29,6 +29,10 @@
       inputs.nixpkgs.follows = "nixpkgs";
       inputs.flake-parts.follows = "flake-parts";
     };
+    flake-parts = {
+      url = "github:hercules-ci/flake-parts";
+      inputs.nixpkgs-lib.follows = "nixpkgs";
+    };
     rust-overlay = {
       url = "github:oxalica/rust-overlay";
       inputs.nixpkgs.follows = "nixpkgs";
@@ -97,7 +101,6 @@
     flake-utils.url = "github:numtide/flake-utils";
     crane.url = "github:ipetkov/crane";
     flake-compat.url = "github:edolstra/flake-compat";
-    flake-parts.url = "github:hercules-ci/flake-parts";
   };
 
   nixConfig = {
@@ -116,74 +119,111 @@
       self,
       nixpkgs,
       home-manager,
+      flake-parts,
       ...
     }@inputs:
-      let
-        pkgs = import nixpkgs {
-          config.allowUnfree = true;
-          system = "x86_64-linux";
-          overlays = [
-            inputs.rust-overlay.overlays.default
-            inputs.vscode-extensions.overlays.default
-          ] ++ (import ./overlay { inherit inputs; });
-        };
-      in
+    flake-parts.lib.mkFlake { inherit inputs; } (
+      { ... }:
       {
-        nixosConfigurations =
-          let
-            lib = nixpkgs.lib;
-          in
+        imports = [
+          inputs.treefmt.flakeModule
+        ];
+        systems = [
+          "x86_64-linux"
+        ];
+        perSystem =
           {
-            ytnix = lib.nixosSystem {
-              specialArgs = { inherit inputs; };
-              modules = [
-                {
-                  nixpkgs = { inherit pkgs; };
-                }
-                ./hosts/ytnix
-                ./modules
-                inputs.sops-nix.nixosModules.sops
-                inputs.lanzaboote.nixosModules.lanzaboote
-                inputs.lix-module.nixosModules.default
-                inputs.nix-ld.nixosModules.nix-ld
-              ];
-            };
-            chunk = lib.nixosSystem {
-              specialArgs = { inherit inputs; };
-              modules = [
-                {
-                  nixpkgs = { inherit pkgs; };
-                }
-                ./hosts/chunk
-                ./modules
-                inputs.sops-nix.nixosModules.sops
-                inputs.lix-module.nixosModules.default
-              ];
-            };
-          };
-        homeConfigurations =
-          let
-            lib = home-manager.lib;
-          in
+            inputs',
+            ...
+          }:
           {
-            "yt@ytnix" = lib.homeManagerConfiguration {
-              inherit pkgs;
-              extraSpecialArgs = { inherit inputs; };
-              modules = [
-                ./home/yt/ytnix.nix
-                inputs.nixvim.homeManagerModules.nixvim
-                inputs.nix-index-database.hmModules.nix-index
-              ];
-            };
+            treefmt = {
+              projectRootFile = "flake.nix";
+              programs.nixfmt.enable = true;
+              programs.typos.enable = true;
+              programs.shellcheck.enable = true;
 
-            "yt@chunk" = lib.homeManagerConfiguration {
-              inherit pkgs;
-              extraSpecialArgs = { inherit inputs; };
-              modules = [
-                ./home/yt/chunk.nix
-                inputs.nixvim.homeManagerModules.nixvim
+              programs.yamlfmt = {
+                enable = true;
+                settings.retain_line_breaks = true;
+              };
+
+              settings.global.excludes = [
+                "secrets/*"
+                "**/*.png" # tries to format a png file
               ];
             };
           };
-      };
+
+        flake =
+          let
+            pkgs = import nixpkgs {
+              config.allowUnfree = true;
+              system = "x86_64-linux";
+              overlays = [
+                inputs.rust-overlay.overlays.default
+                inputs.vscode-extensions.overlays.default
+              ] ++ (import ./overlay { inherit inputs; });
+            };
+          in
+          {
+            nixosConfigurations =
+              let
+                lib = nixpkgs.lib;
+              in
+              {
+                ytnix = lib.nixosSystem {
+                  specialArgs = { inherit inputs; };
+                  modules = [
+                    {
+                      nixpkgs = { inherit pkgs; };
+                    }
+                    ./hosts/ytnix
+                    ./modules
+                    inputs.sops-nix.nixosModules.sops
+                    inputs.lanzaboote.nixosModules.lanzaboote
+                    inputs.lix-module.nixosModules.default
+                    inputs.nix-ld.nixosModules.nix-ld
+                  ];
+                };
+                chunk = lib.nixosSystem {
+                  specialArgs = { inherit inputs; };
+                  modules = [
+                    {
+                      nixpkgs = { inherit pkgs; };
+                    }
+                    ./hosts/chunk
+                    ./modules
+                    inputs.sops-nix.nixosModules.sops
+                    inputs.lix-module.nixosModules.default
+                  ];
+                };
+              };
+            homeConfigurations =
+              let
+                lib = home-manager.lib;
+              in
+              {
+                "yt@ytnix" = lib.homeManagerConfiguration {
+                  inherit pkgs;
+                  extraSpecialArgs = { inherit inputs; };
+                  modules = [
+                    ./home/yt/ytnix.nix
+                    inputs.nixvim.homeManagerModules.nixvim
+                    inputs.nix-index-database.hmModules.nix-index
+                  ];
+                };
+
+                "yt@chunk" = lib.homeManagerConfiguration {
+                  inherit pkgs;
+                  extraSpecialArgs = { inherit inputs; };
+                  modules = [
+                    ./home/yt/chunk.nix
+                    inputs.nixvim.homeManagerModules.nixvim
+                  ];
+                };
+              };
+          };
+      }
+    );
 }
diff --git a/modules/caddy.nix b/modules/caddy.nix
index 90ec770..3e6ca63 100644
--- a/modules/caddy.nix
+++ b/modules/caddy.nix
@@ -36,15 +36,6 @@ in
         }
       '';
       environmentFile = config.sops.secrets."caddy/env".path;
-      
-      virtualHosts."keys.cy7.sh".extraConfig = ''
-        import common
-        respond / 200 {
-          body "ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIOfubDWr0kRm2o4DqaK6l1s4NCdTkljXZWKWCiF5nX+6
-        ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIPhUt9h5dCcrwOrZNKkStCX5OxumPzEwYXSU/0DgtWgP
-        ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAINyn2+OoRN4nExti+vFQ1NHEZip0slAoCH9C5/FzvgZD"
-        }
-      '';
     };
   };
 }