diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..1d953f4
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+use nix
diff --git a/.gitignore b/.gitignore
index 0667445..ce3d79a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,6 @@
+# Nix
+.direnv
+
 # ---> Lua
 # Compiled Lua sources
 luac.out
diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0f37d00
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/cc-tweaked"]
+	path = lib/cc-tweaked
+	url = git@github.com:jiriks74/CCTweaked-LSP.git
diff --git a/.luarc.json b/.luarc.json
new file mode 100644
index 0000000..a32b301
--- /dev/null
+++ b/.luarc.json
@@ -0,0 +1,6 @@
+{
+    "workspace.library": [
+      "./lib/cc-tweaked/",
+      "./lib/basalt/Basalt"
+    ]
+}
diff --git a/default.nix b/default.nix
new file mode 100644
index 0000000..945df29
--- /dev/null
+++ b/default.nix
@@ -0,0 +1,11 @@
+let
+  pkgs = import <nixpkgs> {};
+in
+pkgs.mkShell {
+  packages = with pkgs; [
+    # Choose the build tools that you need
+    ccemux
+    lua
+  ];
+}
+
diff --git a/lib/cc-tweaked b/lib/cc-tweaked
new file mode 160000
index 0000000..3476321
--- /dev/null
+++ b/lib/cc-tweaked
@@ -0,0 +1 @@
+Subproject commit 3476321e41f836626a741477fb03e68f7565982e