diff --git a/readme.md b/readme.md
index fba2dd3..dc8dfd8 100644
--- a/readme.md
+++ b/readme.md
@@ -5,8 +5,8 @@ Generate the post md file for your bitdevs meetup using Github issues.
 # How to use
 
 1. To use the Github API you'll need to follow these [instructions](https://docs.github.com/en/rest/quickstart).
-2. Create a .env file following the .env.sample
-3. Make sure to have your issues in the following format in your dotfiles repo:
+2. Create a .env file following the .env.sample: `cp .env.sample .env`
+3. Make sure to have your issues in the following format in your bitdevs repo:
 
 ```
 <title>
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..4936ab7
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,4 @@
+{
+  pkgs ? import <nixpkgs> { },
+}:
+pkgs.mkShell { nativeBuildInputs = with pkgs.buildPackages; [ cargo ]; }