diff --git a/.github/workflows/build-and-cache.yml b/.github/workflows/build-machines-and-homes.yml
similarity index 53%
rename from .github/workflows/build-and-cache.yml
rename to .github/workflows/build-machines-and-homes.yml
index 937167e..f5de126 100644
--- a/.github/workflows/build-and-cache.yml
+++ b/.github/workflows/build-machines-and-homes.yml
@@ -1,39 +1,9 @@
-name: build and cache random stuff
+name: build and cache machines and homes
 on:
   workflow_dispatch:
   push:
+  pull_request:
 jobs:
-  build-packages:
-    strategy:
-      matrix:
-        package:
-          - github:cything/nixpkgs#hello
-        os:
-          - ubuntu-latest
-          - macos-latest
-
-    runs-on: ${{ matrix.os }}
-    continue-on-error: true
-    steps:
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
-
-      - uses: cachix/cachix-action@v14
-        with:
-          name: cything
-          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
-          useDaemon: false
-          installCommand: nix profile install nixpkgs#cachix
-
-      - name: Setup Attic cache
-        uses: ryanccn/attic-action@v0
-        with:
-          endpoint: ${{ vars.ATTIC_ENDPOINT }}
-          cache: ${{ vars.ATTIC_CACHE }}
-          token: ${{ secrets.ATTIC_TOKEN }}
-
-      - run: nix build -L '${{ matrix.package }}'
-
   build-machines:
     strategy:
       matrix:
@@ -43,8 +13,6 @@ jobs:
           - titan
         os:
           - ubuntu-latest
-          # - macos-latest
- 
     runs-on: ${{ matrix.os }}
     continue-on-error: true
     steps:
@@ -59,32 +27,41 @@ jobs:
           remove-codeql: 'true'
           remove-docker-images: 'true'
           build-mount-path: /nix
-          build-mount-path-ownership: 'root:root'
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
-
-      - name: Setup Attic cache
-        uses: ryanccn/attic-action@v0
+      - uses: nixbuild/nix-quick-install-action@master
+      - name: Sync repository
+        uses: actions/checkout@v4
         with:
-          endpoint: ${{ vars.ATTIC_ENDPOINT }}
-          cache: ${{ vars.ATTIC_CACHE }}
-          token: ${{ secrets.ATTIC_TOKEN }}
-
+          persist-credentials: false
       - uses: cachix/cachix-action@v14
         with:
           name: cything
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
           useDaemon: false
           installCommand: nix profile install nixpkgs#cachix
-
-      - name: Sync repository
-        uses: actions/checkout@v4
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
         with:
-          persist-credentials: false
-
-      - run: nix build -L --accept-flake-config .#nixosConfigurations.${{ matrix.machine }}.config.system.build.toplevel
-
+          endpoint: ${{ vars.ATTIC_ENDPOINT }}
+          cache: ${{ vars.ATTIC_CACHE }}
+          token: ${{ secrets.ATTIC_TOKEN }}
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v5.1.0
+        with:
+          # restore and save a cache using this key
+          primary-key: nix-${{ runner.os }}-${{ matrix.machine }}-${{ hashFiles('**/*.nix', 'flake.lock') }}
+          # if there's no cache hit, restore a cache by this prefix
+          restore-prefixes-first-match: nix-${{ runner.os }}-${{ matrix.machine }}-
+          # do purge caches
+          purge: true
+          # purge all versions of the cache
+          purge-prefixes: nix-${{ runner.os }}-
+          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
+          purge-last-accessed: 86400
+          # except the version with the `primary-key`, if it exists
+          purge-primary-key: never
+          # always save the cache
+          save-always: true
+      - run: nix build -L .#nixosConfigurations.${{ matrix.machine }}.config.system.build.toplevel
   build-homes:
     strategy:
       matrix:
@@ -94,7 +71,6 @@ jobs:
         os:
           - ubuntu-latest
           # - macos-latest
-
     runs-on: ${{ matrix.os }}
     continue-on-error: true
     steps:
@@ -109,28 +85,38 @@ jobs:
           remove-codeql: 'true'
           remove-docker-images: 'true'
           build-mount-path: /nix
-          build-mount-path-ownership: 'root:root'
-
-      - name: Install Nix
-        uses: cachix/install-nix-action@v30
-
-      - name: Setup Attic cache
-        uses: ryanccn/attic-action@v0
+      - uses: nixbuild/nix-quick-install-action@master
+      - name: Sync repository
+        uses: actions/checkout@v4
         with:
-          endpoint: ${{ vars.ATTIC_ENDPOINT }}
-          cache: ${{ vars.ATTIC_CACHE }}
-          token: ${{ secrets.ATTIC_TOKEN }}
-
+          persist-credentials: false
       - uses: cachix/cachix-action@v14
         with:
           name: cything
           authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
           useDaemon: false
           installCommand: nix profile install nixpkgs#cachix
-
-      - name: Sync repository
-        uses: actions/checkout@v4
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
         with:
-          persist-credentials: false
-
-      - run: nix build -L --accept-flake-config .#homeConfigurations."${{ matrix.home }}".activationPackage
+          endpoint: ${{ vars.ATTIC_ENDPOINT }}
+          cache: ${{ vars.ATTIC_CACHE }}
+          token: ${{ secrets.ATTIC_TOKEN }}
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v5.1.0
+        with:
+          # restore and save a cache using this key
+          primary-key: nix-${{ runner.os }}-${{ matrix.home }}-${{ hashFiles('**/*.nix', 'flake.lock') }}
+          # if there's no cache hit, restore a cache by this prefix
+          restore-prefixes-first-match: nix-${{ runner.os }}-${{ matrix.home }}-
+          # do purge caches
+          purge: true
+          # purge all versions of the cache
+          purge-prefixes: nix-${{ runner.os }}-
+          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
+          purge-last-accessed: 86400
+          # except the version with the `primary-key`, if it exists
+          purge-primary-key: never
+          # always save the cache
+          save-always: true
+      - run: nix build -L .#homeConfigurations."${{ matrix.home }}".activationPackage
diff --git a/.github/workflows/build-packages.yml b/.github/workflows/build-packages.yml
new file mode 100644
index 0000000..4408d30
--- /dev/null
+++ b/.github/workflows/build-packages.yml
@@ -0,0 +1,59 @@
+name: build and cache packages
+on:
+  workflow_dispatch:
+    inputs:
+      package:
+        description: "package to build"
+        required: false
+        type: string
+jobs:
+  build-packages:
+    strategy:
+      matrix:
+        package:
+          - github:cything/nixpkgs/928e0c6874ab3e759305e93f806a4cf559645677#alvr
+          - github:cything/nixpkgs/8929e1256ceec677dd57fce405cdaca23176399b#lact
+          - ${{ inputs.package }}
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - ubuntu-24.04-arm
+    runs-on: ${{ matrix.os }}
+    continue-on-error: true
+    steps:
+      - name: Install Nix
+        uses: cachix/install-nix-action@v30
+      - name: Sync repository
+        uses: actions/checkout@v4
+        with:
+          persist-credentials: false
+      - uses: cachix/cachix-action@v14
+        with:
+          name: cything
+          authToken: '${{ secrets.CACHIX_AUTH_TOKEN }}'
+          useDaemon: false
+          installCommand: nix profile install nixpkgs#cachix
+      - name: Setup Attic cache
+        uses: ryanccn/attic-action@v0
+        with:
+          endpoint: ${{ vars.ATTIC_ENDPOINT }}
+          cache: ${{ vars.ATTIC_CACHE }}
+          token: ${{ secrets.ATTIC_TOKEN }}
+      - name: Restore and cache Nix store
+        uses: nix-community/cache-nix-action@v5.1.0
+        with:
+          # restore and save a cache using this key
+          primary-key: nix-${{ runner.os }}-${{ matrix.package }}-${{ hashFiles('**/*.nix', 'flake.lock') }}
+          # if there's no cache hit, restore a cache by this prefix
+          restore-prefixes-first-match: nix-${{ runner.os }}-${{ matrix.package }}-
+          # do purge caches
+          purge: true
+          # purge all versions of the cache
+          purge-prefixes: nix-${{ runner.os }}-
+          # created more than this number of seconds ago relative to the start of the `Post Restore` phase
+          purge-last-accessed: 86400
+          # except the version with the `primary-key`, if it exists
+          purge-primary-key: never
+          # always save the cache
+          save-always: true
+      - run: nix build -L ${{ matrix.package }}
diff --git a/flake.lock b/flake.lock
index d0b4013..9950639 100644
--- a/flake.lock
+++ b/flake.lock
@@ -207,11 +207,11 @@
         "zig": "zig"
       },
       "locked": {
-        "lastModified": 1737085478,
-        "narHash": "sha256-EzdUQf1ljtGIWMmscVzoW3rUxxN3UKyNXOXbzUvz3BQ=",
+        "lastModified": 1737430029,
+        "narHash": "sha256-z55IQogW9z4HhVeT55LlCUFKbYD5O5aLMnU5cX1WTto=",
         "owner": "ghostty-org",
         "repo": "ghostty",
-        "rev": "72d085525b22d66468c5969a4d507a0fa68d4a04",
+        "rev": "5cb2fa6f7594202b12a2603bf32094aa75b1bf0e",
         "type": "github"
       },
       "original": {
@@ -297,11 +297,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1737299337,
-        "narHash": "sha256-0NBrY2A7buujKmeCbieopOMSbLxTu8TFcTLqAbTnQDw=",
+        "lastModified": 1737394973,
+        "narHash": "sha256-EW4oXMfnfA5sNM9Jqm+y98horWVvN66Gu7YIcEpFYZc=",
         "owner": "nix-community",
         "repo": "home-manager",
-        "rev": "f8ef4541bb8a54a8b52f19b52912119e689529b3",
+        "rev": "9786661d57c476021c8a0c3e53bf9fa2b4f3328b",
         "type": "github"
       },
       "original": {
@@ -397,11 +397,11 @@
         "xwayland-satellite-unstable": "xwayland-satellite-unstable"
       },
       "locked": {
-        "lastModified": 1737325400,
-        "narHash": "sha256-B8+1x5rDA9GtzX+LWlceIbLBwncKH5uDrGqEN0EoOQw=",
+        "lastModified": 1737373716,
+        "narHash": "sha256-GRI9WugYv8QlnhZlINfY8gHIR+xn/AsEXhQP3+FjUh0=",
         "owner": "sodiboo",
         "repo": "niri-flake",
-        "rev": "aad9ae8e2b07ed5d37743f3ae87c42528e2d172c",
+        "rev": "5aa5e53601ff1d93ae6b4dc6f833c73fc8de6466",
         "type": "github"
       },
       "original": {
@@ -430,11 +430,11 @@
     "niri-unstable": {
       "flake": false,
       "locked": {
-        "lastModified": 1737211438,
-        "narHash": "sha256-XPcV2rV7Vy7lLeZMhTOwd0t/sRwNquXI7CH7+3Aftt0=",
+        "lastModified": 1737370409,
+        "narHash": "sha256-khoHHrpP/yArGEm94H/GtZytGzfJECsAEGmB9DLWb7M=",
         "owner": "YaLTeR",
         "repo": "niri",
-        "rev": "818248457210f5101459ea7d7066d12c456c8a97",
+        "rev": "7f025da5b6edb1d77e785ba6a6450ab10788ad8f",
         "type": "github"
       },
       "original": {
@@ -466,11 +466,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1737274611,
-        "narHash": "sha256-tmD7875tu1P0UvhI3Q/fXvIe8neJo7H9ZrPQ+QF7Q3E=",
+        "lastModified": 1737401148,
+        "narHash": "sha256-8YfoGyE89rWpG6NjCmYrJeV8EPAKvnZf2lN402WbC/A=",
         "owner": "nixos",
         "repo": "nixpkgs",
-        "rev": "50165c4f7eb48ce82bd063e1fb8047a0f515f8ce",
+        "rev": "7ceed4f800bec4c12c9b21c54bb76cb28a80e259",
         "type": "github"
       },
       "original": {
@@ -587,11 +587,11 @@
         "treefmt-nix": "treefmt-nix"
       },
       "locked": {
-        "lastModified": 1737308837,
-        "narHash": "sha256-Sro74XNFgGgIIW4uo/YSVGafZhKnZwPLJNBvMsgpl4k=",
+        "lastModified": 1737385899,
+        "narHash": "sha256-/zyvdstDpPhc5lhFMtKgyQdU2oXGXDb0cg4BY91NKvg=",
         "owner": "nix-community",
         "repo": "nixvim",
-        "rev": "8fb2fe22c237b25b8af346870e126fdaeaff688b",
+        "rev": "115994f18e439a1cca9cdaaf15c004870256814d",
         "type": "github"
       },
       "original": {
@@ -714,11 +714,11 @@
         ]
       },
       "locked": {
-        "lastModified": 1737107480,
-        "narHash": "sha256-GXUE9+FgxoZU8v0p6ilBJ8NH7k8nKmZjp/7dmMrCv3o=",
+        "lastModified": 1737411508,
+        "narHash": "sha256-j9IdflJwRtqo9WpM0OfAZml47eBblUHGNQTe62OUqTw=",
         "owner": "Mic92",
         "repo": "sops-nix",
-        "rev": "4c4fb93f18b9072c6fa1986221f9a3d7bf1fe4b6",
+        "rev": "015d461c16678fc02a2f405eb453abb509d4e1d4",
         "type": "github"
       },
       "original": {
diff --git a/flake.nix b/flake.nix
index f773137..be9d2a5 100644
--- a/flake.nix
+++ b/flake.nix
@@ -46,11 +46,15 @@
       "https://cache.cything.io/central"
       "https://niri.cachix.org"
       "https://nix-community.cachix.org"
+      "https://cache.garnix.io"
+      "https://cything.cachix.org"
     ];
     extra-trusted-public-keys = [
       "central:uWhjva6m6dhC2hqNisjn2hXGvdGBs19vPkA1dPEuwFg="
       "niri.cachix.org-1:Wv0OmO7PsuocRKzfDoJ3mulSl7Z6oezYhGhR+3W2964="
       "nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs="
+      "cache.garnix.io:CTFPyKSLcx5RMJKfLo5EEPUObbA78b0YQ2DTCJXqr9g="
+      "cything.cachix.org-1:xqW1W5NNL+wrM9wfSELb0MLj/harD2ZyB4HbdaMyvPI="
     ];
     builders-use-substitutes = true;
   };
@@ -111,7 +115,6 @@
               overlays = [
                 inputs.niri.overlays.niri
                 inputs.rust-overlay.overlays.default
-                inputs.ghostty.overlays.default
               ] ++ import ./overlay;
             };
           in
diff --git a/garnix.yaml b/garnix.yaml
new file mode 100644
index 0000000..c189664
--- /dev/null
+++ b/garnix.yaml
@@ -0,0 +1,6 @@
+builds:
+  include:
+    - 'nixosConfigurations.*'
+    - 'homeConfigurations.*'
+    - '*.aarch64-linux.*'
+    - '*.x86_64-linux.*'
diff --git a/home/foot.nix b/home/foot.nix
index 2df77bc..ce7cb0c 100644
--- a/home/foot.nix
+++ b/home/foot.nix
@@ -17,40 +17,32 @@
         blink = "yes";
         blink-rate = 500;
         beam-thickness = 1.5;
+        color = "161821 c6c8d1";
       };
       mouse = {
         hide-when-typing = "yes";
       };
       colors = {
-        background = "161821";
         foreground = "c6c8d1";
-
-        selection-background = "1e2132";
-        selection-foreground = "c6c8d1";
-
-        regular0 = "161821";
-        bright0 = "6b7089";
-
+        background = "161821";
+        regular0 = "1e2132";
         regular1 = "e27878";
-        bright1 = "e98989";
-
         regular2 = "b4be82";
-        bright2 = "c0ca8e";
-
         regular3 = "e2a478";
-        bright3 = "e9b189";
-
         regular4 = "84a0c6";
-        bright4 = "91acd1";
-
         regular5 = "a093c7";
-        bright5 = "ada0d3";
-
         regular6 = "89b8c2";
-        bright6 = "95c4ce";
-
         regular7 = "c6c8d1";
+        bright0 = "6b7089";
+        bright1 = "e98989";
+        bright2 = "c0ca8e";
+        bright3 = "e9b189";
+        bright4 = "91acd1";
+        bright5 = "ada0d3";
+        bright6 = "95c4ce";
         bright7 = "d2d4de";
+        selection-foreground = "161821";
+        selection-background = "c6c8d1";
       };
 
       key-bindings = {
diff --git a/home/ghostty.nix b/home/ghostty.nix
index f14fc01..801ca49 100644
--- a/home/ghostty.nix
+++ b/home/ghostty.nix
@@ -1,10 +1,12 @@
-{ ... }: {
+{ inputs, ... }: {
   programs.ghostty = {
     enable = true;
+    package = inputs.ghostty.packages.x86_64-linux.ghostty;
     enableZshIntegration = true;
     settings = {
+      theme = "gruvbox-dark";
       font-family = "IBM Plex Mono";
-      font-size = 8;
+      font-size = "12";
       window-decoration = false;
     };
   };
diff --git a/home/irssi.nix b/home/irssi.nix
new file mode 100644
index 0000000..65da469
--- /dev/null
+++ b/home/irssi.nix
@@ -0,0 +1,18 @@
+{...}: {
+  programs.irssi = {
+    enable = true;
+    networks.liberachat = {
+      nick = "cy7";
+      server = {
+        address = "irc.libera.chat";
+        port = 6697;
+        autoConnect = true;
+      };
+      channels = {
+        nixos.autoJoin = true;
+        linux.autoJoin = true;
+        rust.autoJoin = true;
+      };
+    };
+  };
+}
diff --git a/home/niri/default.nix b/home/niri/default.nix
index 4e39606..af7b3ba 100644
--- a/home/niri/default.nix
+++ b/home/niri/default.nix
@@ -6,7 +6,7 @@
 }:
 let
   wallpaper = "${./nixos-c-book.png}";
-  terminal = "ghostty";
+  terminal = "foot";
   menu = [
     "fuzzel"
     "-w"
@@ -32,6 +32,14 @@ in
         ];
       }
       { command = [ "${lib.getExe pkgs.xwayland-satellite}" ]; }
+      {
+        command = [
+          "wl-paste"
+          "--watch"
+          "cliphist"
+          "store"
+        ];
+      }
     ];
     hotkey-overlay.skip-at-startup = true;
 
@@ -48,14 +56,15 @@ in
 
     environment = {
       DISPLAY = ":0"; # for xwayland-satellite
+      ANKI_WAYLAND = "1";
     };
 
     layout = {
-      gaps = 4;
+      gaps = 0;
       focus-ring = {
         width = 4;
-        active.color = "#00000055";
-        inactive.color = "#505050";
+        active.color = "#4c7899";
+        inactive.color = "#333333";
       };
       always-center-single-column = true;
       border.enable = false;
diff --git a/home/yt/ytnix.nix b/home/yt/ytnix.nix
index f60bdcc..cb0e66d 100644
--- a/home/yt/ytnix.nix
+++ b/home/yt/ytnix.nix
@@ -7,6 +7,7 @@
     ./common.nix
     ../foot.nix
     ../niri
+    ../irssi.nix
     ../ghostty.nix
   ];
   home = {
@@ -41,11 +42,6 @@
     };
   };
 
-  home.sessionVariables = {
-    ANKI_WAYLAND = "1";
-    DISPLAY = ":0";
-  };
-
   home.packages = with pkgs; [
     firefox
     ungoogled-chromium
@@ -103,6 +99,7 @@
     seahorse
     github-cli
     fuzzel
+    nixpkgs-review
   ];
 
   programs.waybar.enable = true;
diff --git a/hosts/chunk/element.nix b/hosts/chunk/element.nix
index 958666e..81ab246 100644
--- a/hosts/chunk/element.nix
+++ b/hosts/chunk/element.nix
@@ -7,9 +7,12 @@
   virtualisation.oci-containers.containers.element = {
     image = "vectorim/element-web";
     autoStart = true;
-    ports = [ "127.0.0.1:8089:80" ];
+    ports = [ "127.0.0.1:8089:8089" ];
     pull = "newer";
     networks = [ "element-net" ];
+    environment = {
+      ELEMENT_WEB_PORT = "8089";
+    };
   };
 
   systemd.services.create-element-net = {
diff --git a/hosts/chunk/forgejo.nix b/hosts/chunk/forgejo.nix
index 0b644a2..07d0e69 100644
--- a/hosts/chunk/forgejo.nix
+++ b/hosts/chunk/forgejo.nix
@@ -20,6 +20,7 @@
       };
       actions.ENABLED = false;
       repository.ENABLE_PUSH_CREATE_USER = true;
+      indexer.REPO_INDEXER_ENABLED = true;
     };
     database = {
       type = "postgres";
diff --git a/hosts/ytnix/default.nix b/hosts/ytnix/default.nix
index 8912c19..0024c40 100644
--- a/hosts/ytnix/default.nix
+++ b/hosts/ytnix/default.nix
@@ -41,7 +41,7 @@
       efi.canTouchEfiVariables = false; # toggle when installing
     };
     tmp.cleanOnBoot = true;
-    kernelPackages = pkgs.linuxPackages_latest;
+    kernelPackages = pkgs.linuxKernel.packages.linux_zen;
     extraModulePackages = with config.boot.kernelPackages; [
       rtl8821ce
     ];
diff --git a/overlay/default.nix b/overlay/default.nix
index 99fc17b..123e1f2 100644
--- a/overlay/default.nix
+++ b/overlay/default.nix
@@ -2,6 +2,7 @@ let
   overlays = [
     ./conduwuit
     ./attic
+    ./kernel.nix
   ];
   importedOverlays = map (m: import m) overlays;
 in
diff --git a/overlay/kernel.nix b/overlay/kernel.nix
new file mode 100644
index 0000000..be2404e
--- /dev/null
+++ b/overlay/kernel.nix
@@ -0,0 +1,11 @@
+final: prev:
+let
+  inherit (prev) lib;
+in
+{
+  linuxKernels.kernels.linux_zen = prev.linuxKernels.kernels.linux_zen.override (old: {
+    extraStructuredConfig = with lib.kernel; {
+      CONFIG_SCHED_MUQSS = yes;
+    };
+  });
+}