diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
new file mode 100644
index 0000000..90f7018
--- /dev/null
+++ b/.github/workflows/nightly.yml
@@ -0,0 +1,47 @@
+name: Build NixOS (on demand)
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: 0 0 * * *
+
+# concurrency:
+#   group: ${{ github.workflow }}-${{ github.ref }}-${{ inputs.host }}
+#   cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - uses: ./.github/actions/clean-disk
+
+      - uses: DeterminateSystems/nix-installer-action@v12
+        with:
+          extra-conf: |
+            accept-flake-config = true
+
+      - uses: DeterminateSystems/magic-nix-cache-action@v7
+
+      - uses: cachix/cachix-action@v15
+        with:
+          name: daylin
+          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"
+
+      - name: Update nix flake
+        run:
+          nix flake update >> $GITHUB_STEP_SUMMARY
+
+      - name: Build
+        run: |
+          nix run . \
+            -- \
+            build --minimal \
+              --host "othalan" \
+              --flake . \
+              --verbose \
+              --debug \
+              -- \
+              --print-build-logs
diff --git a/lib/default.nix b/lib/default.nix
index a98dcd4..36ef9c6 100644
--- a/lib/default.nix
+++ b/lib/default.nix
@@ -1,6 +1,5 @@
-inputs:
+inputs@{ nixpkgs, self, ... }:
 let
-  inherit (inputs) nixpkgs self;
   lib = nixpkgs.lib.extend (import ./extended.nix);
 
   inherit (builtins) mapAttrs readDir listToAttrs;
@@ -11,8 +10,7 @@ let
   #supportedSystems = ["x86_64-linux" "x86_64-darwin" "aarch64-linux" "aarch64-darwin"];
   supportedSystems = [ "x86_64-linux" ];
   forAllSystems = f: genAttrs supportedSystems (system: f (import nixpkgs { inherit system; }));
-in
-{
+
   oizysFlake = {
     nixosModules = listToAttrs (findModulesList ../modules);
     nixosConfigurations = mapAttrs (name: _: mkSystem name) (readDir ../hosts);
@@ -38,4 +36,7 @@ in
     );
     formatter = forAllSystems (pkgs: pkgs.nixfmt-rfc-style);
   };
+in
+{
+  inherit oizysFlake;
 }
diff --git a/modules/languages/zig.nix b/modules/languages/zig.nix
index 6848411..e833bca 100644
--- a/modules/languages/zig.nix
+++ b/modules/languages/zig.nix
@@ -8,7 +8,7 @@
 let
   inherit (lib) mkIfIn;
   cfg = config.oizys.languages;
-  zig = inputs.zig2nix.outputs.packages.${pkgs.system}.zig.default.bin;
+  zig = inputs.zig2nix.outputs.packages.${pkgs.system}.zig.master.bin;
   zls = inputs.zls.outputs.packages.${pkgs.system}.default.overrideAttrs {
     nativeBuildInputs = [ zig ];
   };