Commented up flake.nix

flake.nix

@@ -1,21 +1,33 @@
 {
+  # Description of the application
   description = "A tool for viewing and editing your nix configuration as a tree";
 
+  # Importing nixpkgs (the package repository) and poetry for building the application
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     poetry2nix.url = "github:nix-community/poetry2nix";
   };
 
   outputs = { self, nixpkgs, poetry2nix }:
     let
+      # Setting system to 64 bit linux
       system = "x86_64-linux";
+
+      # Adding poetry to our nixpkgs, and setting the pkgs variable as this
       pkgs = nixpkgs.legacyPackages.${system}.extend poetry2nix.overlays.default;
+
+      # Setting the lib variable (for licenses and maintainers)
       lib = nixpkgs.lib;
+
+      # Extract mkPoetryApplication from mkPoetry2Nix for buikding our application
       inherit (poetry2nix.lib.mkPoetry2Nix { inherit pkgs; }) mkPoetryApplication;
     in
     {
+      # The section that builds our application
       defaultPackage.x86_64-linux = mkPoetryApplication {
           type = "app";
+
+          # The project is found at the root of the repository
           projectDir = ./.;
 
           # To copy over the full options json