diff --git a/external/toxcore/CMakeLists.txt b/external/toxcore/CMakeLists.txt
index 29d6594..7974ddc 100644
--- a/external/toxcore/CMakeLists.txt
+++ b/external/toxcore/CMakeLists.txt
@@ -166,22 +166,22 @@ if (NOT TARGET toxcore)
 		# TODO: add the others
 		configure_file(
 			${TOX_DIR}toxcore/tox.h
-			${TOX_DIR}tox/tox.h
+			${toxcore_BINARY_DIR}/include/tox/tox.h
 			@ONLY
 		)
 		configure_file(
 			${TOX_DIR}toxcore/tox_events.h
-			${TOX_DIR}tox/tox_events.h
+			${toxcore_BINARY_DIR}/include/tox/tox_events.h
 			@ONLY
 		)
 		configure_file(
 			${TOX_DIR}toxcore/tox_private.h
-			${TOX_DIR}tox/tox_private.h
+			${toxcore_BINARY_DIR}/include/tox/tox_private.h
 			@ONLY
 		)
 
 		target_include_directories(toxcore PRIVATE "${TOX_DIR}toxcore")
-		target_include_directories(toxcore PUBLIC "${TOX_DIR}")
+		target_include_directories(toxcore PUBLIC "${toxcore_BINARY_DIR}/include/")
 
 		target_compile_definitions(toxcore PUBLIC USE_IPV6=1)
 		#target_compile_definitions(toxcore PUBLIC MIN_LOGGER_LEVEL=LOGGER_LEVEL_DEBUG)
diff --git a/flake.lock b/flake.lock
new file mode 100644
index 0000000..91862b1
--- /dev/null
+++ b/flake.lock
@@ -0,0 +1,61 @@
+{
+  "nodes": {
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1694529238,
+        "narHash": "sha256-zsNZZGTGnMOf9YpHKJqMSsa0dXbfmxeoJ7xHlrt+xmY=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "ff7b65b44d01cf9ba6a71320833626af21126384",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
+    "nixpkgs": {
+      "locked": {
+        "lastModified": 1694553957,
+        "narHash": "sha256-8o15HEax53lBJjjcr5VHMpuuT6vBcrzSNB6y2iGlPaU=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "e7fe745d22df5fa282b321e577fe18d4f62e0f0b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "release-23.05",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
+    "root": {
+      "inputs": {
+        "flake-utils": "flake-utils",
+        "nixpkgs": "nixpkgs"
+      }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
+    }
+  },
+  "root": "root",
+  "version": 7
+}
diff --git a/flake.nix b/flake.nix
new file mode 100644
index 0000000..8115acb
--- /dev/null
+++ b/flake.nix
@@ -0,0 +1,58 @@
+{
+  description = "totato flake";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/release-23.05";
+    flake-utils.url = "github:numtide/flake-utils";
+  };
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+    let
+      pkgs = import nixpkgs { inherit system; };
+      toxcore-src = pkgs.fetchFromGitHub {
+        owner = "Green-Sky";
+        repo = "c-toxcore";
+        fetchSubmodules = true;
+        rev = "d4b06edc2a35bad51b0f0950d74f61c8c70630ab"; # ngc_events
+        hash = "sha256-P7wTojRQRtvTx+h9+QcFdO381hniWWpAy5Yv63KWWZA=";
+      };
+    in {
+      packages.default = pkgs.stdenv.mkDerivation {
+        pname = "totato";
+        version = "0.0.0-dev";
+
+        src = ./.;
+
+        nativeBuildInputs = with pkgs; [
+          cmake
+          ninja
+          pkg-config
+          git # cmake FetchContent
+        ];
+
+        cmakeFlags = [
+          #"-DFETCHCONTENT_SOURCE_DIR_TOXCORE=${pkgs.libtoxcore.src}"
+          "-DFETCHCONTENT_SOURCE_DIR_TOXCORE=${toxcore-src}"
+        ];
+
+        buildInputs = with pkgs; [
+          #(libsodium.override { stdenv = pkgs.pkgsStatic.stdenv; })
+          #pkgsStatic.libsodium
+          libsodium
+        ];
+
+        # TODO: replace with install command
+        installPhase = ''
+          mkdir -p $out/bin
+          mv bin/totato $out/bin
+        '';
+      };
+
+      #apps.default = {
+        #type = "app";
+        #program = "${self.packages.${system}.default}/bin/tomato";
+      #};
+    }
+  );
+}
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index e69de29..b6ffced 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -0,0 +1,11 @@
+cmake_minimum_required(VERSION 3.9 FATAL_ERROR)
+
+add_executable(totato
+	./main.cpp
+)
+
+target_compile_features(totato PUBLIC cxx_std_17)
+target_link_libraries(totato PUBLIC
+	toxcore
+)
+
diff --git a/src/main.cpp b/src/main.cpp
new file mode 100644
index 0000000..061ed7e
--- /dev/null
+++ b/src/main.cpp
@@ -0,0 +1,3 @@
+int main(void) {
+	return 0;
+}