diff --git a/.github/workflows/nightly.yml b/.github/workflows/nightly.yml
new file mode 100644
index 0000000..722c590
--- /dev/null
+++ b/.github/workflows/nightly.yml
@@ -0,0 +1,193 @@
+name: nightly
+
+on:
+  workflow_dispatch:
+    inputs:
+      branch:
+        description: Branch to build
+        required: true
+        default: main
+        type: string
+
+concurrency:
+  group: nightly-${{ inputs.branch }}
+  cancel-in-progress: false
+
+permissions:
+  contents: read
+
+jobs:
+  preflight:
+    name: preflight
+    runs-on: blacksmith-2vcpu-ubuntu-2404
+    timeout-minutes: 15
+    outputs:
+      nightly_id: ${{ steps.nightly.outputs.nightly_id }}
+      nightly_version: ${{ steps.nightly.outputs.nightly_version }}
+      source_ref: ${{ steps.nightly.outputs.source_ref }}
+      source_sha: ${{ steps.nightly.outputs.source_sha }}
+
+    steps:
+      - name: Validate branch
+        shell: bash
+        env:
+          INPUT_BRANCH: ${{ inputs.branch }}
+        run: |
+          source_ref="${INPUT_BRANCH}"
+          if [[ -z "$source_ref" ]]; then
+            echo "Branch is required." >&2
+            exit 1
+          fi
+
+          if [[ "$source_ref" == refs/* || "$source_ref" == origin/* ]]; then
+            echo "Enter a branch name such as main or feature/nightly, not $source_ref." >&2
+            exit 1
+          fi
+
+          git check-ref-format --branch "$source_ref" >/dev/null
+
+      - name: Checkout source branch
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.branch }}
+          persist-credentials: false
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+
+      - name: Resolve nightly metadata
+        id: nightly
+        shell: bash
+        env:
+          INPUT_BRANCH: ${{ inputs.branch }}
+          RUN_NUMBER: ${{ github.run_number }}
+        run: |
+          stamp="$(date -u +'%Y%m%d')"
+          base_version="$(node -p "require('./package.json').version.replace(/[-+].*$/, '')")"
+          nightly_id="${stamp}.${RUN_NUMBER}"
+          nightly_version="${base_version}-nightly.${nightly_id}"
+
+          {
+            echo "nightly_id=$nightly_id"
+            echo "nightly_version=$nightly_version"
+            echo "source_ref=$INPUT_BRANCH"
+            echo "source_sha=$(git rev-parse HEAD)"
+          } >> "$GITHUB_OUTPUT"
+
+  build:
+    name: ${{ matrix.label }}
+    runs-on: ${{ matrix.os }}
+    needs: preflight
+    timeout-minutes: 45
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - label: windows-x64
+            os: blacksmith-2vcpu-windows-2025
+            builder_args: "--win nsis portable --x64"
+            artifact_paths: |
+              dist-release/*-x64.exe
+              dist-release/latest*.yml
+              dist-release/*.blockmap
+          - label: windows-arm64
+            os: blacksmith-2vcpu-windows-2025
+            builder_args: "--win nsis portable --arm64"
+            artifact_paths: |
+              dist-release/*-arm64.exe
+          - label: macos-x64
+            os: blacksmith-6vcpu-macos-15
+            builder_args: "--mac dmg zip --x64"
+            artifact_paths: |
+              dist-release/*.dmg
+              dist-release/*-x64.zip
+          - label: macos-arm64
+            os: blacksmith-6vcpu-macos-15
+            builder_args: "--mac dmg zip --arm64"
+            artifact_paths: |
+              dist-release/*.dmg
+              dist-release/*-arm64.zip
+          - label: linux-x64
+            os: blacksmith-2vcpu-ubuntu-2404
+            builder_args: "--linux AppImage deb --x64"
+            artifact_paths: |
+              dist-release/*-x86_64.AppImage
+              dist-release/*-linux-x64.AppImage
+              dist-release/*-amd64.deb
+              dist-release/*-linux-x64.deb
+              dist-release/latest-linux.yml
+          - label: linux-arm64
+            os: blacksmith-2vcpu-ubuntu-2404-arm
+            builder_args: "--linux AppImage deb --arm64"
+            artifact_paths: |
+              dist-release/*-arm64.AppImage
+              dist-release/*-arm64.deb
+              dist-release/latest-linux-arm64.yml
+
+    env:
+      CSC_IDENTITY_AUTO_DISCOVERY: "false"
+      ELECTRON_CACHE: ${{ github.workspace }}/.cache/electron
+      ELECTRON_BUILDER_CACHE: ${{ github.workspace }}/.cache/electron-builder
+      NIGHTLY_VERSION: ${{ needs.preflight.outputs.nightly_version }}
+      npm_config_audit: "false"
+      npm_config_fund: "false"
+      USE_SYSTEM_FPM: ${{ matrix.label == 'linux-arm64' && 'true' || 'false' }}
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ needs.preflight.outputs.source_sha }}
+          persist-credentials: false
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 22
+          cache: npm
+          cache-dependency-path: package-lock.json
+
+      - name: Cache Electron binaries
+        uses: actions/cache@v4
+        with:
+          path: |
+            ${{ github.workspace }}/.cache/electron
+            ${{ github.workspace }}/.cache/electron-builder
+          key: ${{ runner.os }}-electron-${{ hashFiles('package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-electron-
+
+      - name: Install Linux packaging packages
+        if: runner.os == 'Linux'
+        env:
+          DEBIAN_FRONTEND: noninteractive
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends fakeroot rpm
+
+      - name: Install FPM for arm64 deb builds
+        if: matrix.label == 'linux-arm64'
+        run: |
+          sudo apt-get install -y ruby ruby-dev build-essential
+          sudo gem install fpm
+
+      - name: Set nightly package version
+        run: node tools/sync-release-version.mjs "$NIGHTLY_VERSION"
+
+      - name: Install dependencies
+        run: npm ci --prefer-offline --no-audit --progress=false
+
+      - name: Build app
+        run: npm run build
+
+      - name: Package installers
+        run: npx electron-builder --publish never ${{ matrix.builder_args }}
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v4
+        with:
+          name: openstroid-nightly-${{ needs.preflight.outputs.nightly_id }}-${{ matrix.label }}
+          path: ${{ matrix.artifact_paths }}
+          if-no-files-found: error
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..4e213c6
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,44 @@
+{
+  "nodes": {
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1783224372,
+        "narHash": "sha256-8i/87eeoqiGE4yOTjwSA3Eh/ziJRQEmd/unYU+K27sk=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d407951447dcd00442e97087bf374aad70c04cea",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-unstable",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "nixpkgs-electron": {
+      "locked": {
+        "lastModified": 1782847189,
+        "narHash": "sha256-twXPFqFsrrY5r28Zh7Homgcp2gUMBgQ6WDS98Q/3xFI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "b6018f87da91d19d0ab4cf979885689b469cdd41",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-electron": "nixpkgs-electron"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..44f98f6
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,103 @@
+{
+  description = "OpenStroid";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    nixpkgs-electron.url = "github:NixOS/nixpkgs/nixos-25.11";
+  };
+
+  outputs = {
+    self,
+    nixpkgs,
+    nixpkgs-electron,
+  }: let
+    supportedSystems = [
+      "x86_64-linux"
+      "aarch64-linux"
+      "x86_64-darwin"
+      "aarch64-darwin"
+    ];
+    forAllSystems = nixpkgs.lib.genAttrs supportedSystems;
+    pkgsFor = system: import nixpkgs {inherit system;};
+    electronPkgsFor = system:
+      import nixpkgs-electron {
+        inherit system;
+        config.permittedInsecurePackages = ["electron-37.10.3"];
+      };
+    linuxElectronConfig = pkgs: electronPackage: {
+      packages = pkgs.lib.optionals pkgs.stdenv.hostPlatform.isLinux [electronPackage];
+      env = pkgs.lib.optionalString pkgs.stdenv.hostPlatform.isLinux ''
+        export ELECTRON_SKIP_BINARY_DOWNLOAD=1
+        export ELECTRON_OVERRIDE_DIST_PATH="${electronPackage}/bin"
+        export npm_config_electron_skip_binary_download=true
+      '';
+    };
+  in {
+    devShells = forAllSystems (system: let
+      pkgs = pkgsFor system;
+      linuxElectron = linuxElectronConfig pkgs (electronPkgsFor system).electron_37;
+    in {
+      default = pkgs.mkShell {
+        packages = with pkgs;
+          [
+            bun
+            nodejs_22
+            pkg-config
+            python3
+          ]
+          ++ linuxElectron.packages
+          ++ lib.optionals stdenv.hostPlatform.isLinux [
+            fakeroot
+            rpm
+            ruby
+          ];
+
+        shellHook =
+          ''
+            export ELECTRON_CACHE="$PWD/.cache/electron"
+            export ELECTRON_BUILDER_CACHE="$PWD/.cache/electron-builder"
+          ''
+          + linuxElectron.env;
+      };
+    });
+
+    apps = forAllSystems (system: let
+      pkgs = pkgsFor system;
+      linuxElectron = linuxElectronConfig pkgs (electronPkgsFor system).electron_37;
+      openstroidDev = pkgs.writeShellApplication {
+        name = "openstroid-dev";
+        runtimeInputs =
+          [
+            pkgs.bun
+            pkgs.nodejs_22
+          ]
+          ++ linuxElectron.packages;
+        text =
+          linuxElectron.env
+          + ''
+            exec bun run dev "$@"
+          '';
+      };
+    in {
+      default = {
+        type = "app";
+        program = "${openstroidDev}/bin/openstroid-dev";
+      };
+    });
+
+    formatter = forAllSystems (system: let
+      pkgs = pkgsFor system;
+    in
+      pkgs.writeShellApplication {
+        name = "openstroid-fmt";
+        runtimeInputs = [pkgs.alejandra];
+        text = ''
+          if [ "$#" -eq 0 ]; then
+            set -- flake.nix
+          fi
+
+          exec alejandra "$@"
+        '';
+      });
+  };
+}
diff --git a/tools/fix-electron-install.cjs b/tools/fix-electron-install.cjs
index c425885..f535c5a 100644
--- a/tools/fix-electron-install.cjs
+++ b/tools/fix-electron-install.cjs
@@ -10,6 +10,10 @@ const distPath = path.join(electronDir, 'dist');
 const pathFile = path.join(electronDir, 'path.txt');
 const platformPath = getPlatformPath();
 
+function isTruthy(value) {
+  return /^(1|true|yes)$/i.test(value ?? '');
+}
+
 function getPlatformPath() {
   const platform = process.env.npm_config_platform || process.platform;
 
@@ -66,6 +70,14 @@ async function extractZip(zipPath, destination) {
 }
 
 (async () => {
+  if (
+    isTruthy(process.env.ELECTRON_SKIP_BINARY_DOWNLOAD) ||
+    isTruthy(process.env.npm_config_electron_skip_binary_download)
+  ) {
+    console.log('Skipping Electron binary install because Electron binary downloads are disabled.');
+    return;
+  }
+
   if (isInstalled()) {
     return;
   }