diff --git a/.envrc b/.envrc
new file mode 100644
index 0000000..051d09d
--- /dev/null
+++ b/.envrc
@@ -0,0 +1 @@
+eval "$(lorri direnv)"
diff --git a/.gitignore b/.gitignore
index 267ec84..32829c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -3,10 +3,6 @@
 # will have compiled files and executables
 /target/
 
-# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
-# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
-Cargo.lock
-
 # These are backup files generated by rustfmt
 **/*.rs.bk
 
@@ -51,5 +47,3 @@ luac.out
 *.i*86
 *.x86_64
 *.hex
-
-
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..76187e2
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,116 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
+name = "autocfg"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
+
+[[package]]
+name = "bstr"
+version = "0.2.13"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "31accafdb70df7871592c058eca3985b71104e15ac32f64706022c58867da931"
+dependencies = [
+ "memchr",
+]
+
+[[package]]
+name = "cc"
+version = "1.0.57"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fde55d2a2bfaa4c9668bbc63f531fbdeee3ffe188f4662511ce2c22b3eedebe"
+
+[[package]]
+name = "lazy_static"
+version = "1.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
+
+[[package]]
+name = "memchr"
+version = "2.3.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
+
+[[package]]
+name = "mlua"
+version = "0.4.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b5e4f6acfacd1b86a4a486c256ccf04058545000e9f429549b9d899a5a4aea58"
+dependencies = [
+ "bstr",
+ "cc",
+ "lazy_static",
+ "num-traits",
+ "pkg-config",
+]
+
+[[package]]
+name = "mlua_derive"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a63d88d7ed834c4c6a803c4f50eef61e981012df21f15d707b363f73a777f5e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "num-traits"
+version = "0.2.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac267bcc07f48ee5f8935ab0d24f316fb722d7a1292e2913f0cc196b29ffd611"
+dependencies = [
+ "autocfg",
+]
+
+[[package]]
+name = "pkg-config"
+version = "0.3.17"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
+dependencies = [
+ "unicode-xid",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "replace_me"
+version = "0.1.0"
+dependencies = [
+ "mlua",
+ "mlua_derive",
+]
+
+[[package]]
+name = "syn"
+version = "1.0.33"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e8d5d96e8cbb005d6959f119f773bfaebb5684296108fb32600c00cde305b2cd"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-xid",
+]
+
+[[package]]
+name = "unicode-xid"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..ed2bf50
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,14 @@
+[package]
+name = "replace_me"
+version = "0.1.0"
+authors = ["Christine Dodrill <me@christine.website>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib"]
+
+[dependencies]
+mlua = { version = "0.4", features = ["lua53", "module"] }
+mlua_derive = "0.4"
\ No newline at end of file
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..76cbf23
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,9 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  buildInputs = with pkgs; [
+    rustc rls cargo cargo-watch lua5_3 rustfmt pkg-config
+
+    bashInteractive
+  ];
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..d555bfe
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,15 @@
+#[macro_use]
+extern crate mlua_derive;
+use mlua::prelude::*;
+
+fn hello(_: &Lua, name: String) -> LuaResult<()> {
+    println!("hello, {}!", name);
+    Ok(())
+}
+
+#[lua_module]
+fn my_module(lua: &Lua) -> LuaResult<LuaTable> {
+    let exports = lua.create_table()?;
+    exports.set("hello", lua.create_function(hello)?)?;
+    Ok(exports)
+}