added comments to explain need help with one section marked TODO

flake.nix

@@ -10,9 +10,6 @@
       # System types to support.
       supportedSystems = [
         "x86_64-linux"
-        "x86_64-darwin"
-        "aarch64-linux"
-        "aarch64-darwin"
       ];
 
       # Helper function to generate an attrset '{ x86_64-linux = f "x86_64-linux"; ... }'.
@@ -24,18 +21,20 @@
     in
     {
 
-      # Provide some binary packages for selected system types.
+      # Provide some binary packages for selected system types by mapping over each system architecture.
       packages = forAllSystems (
         system:
         let
+	  # Set pkgs = the correct version for a given architecture.
           pkgs = nixpkgsFor.${system};
         in
         {
+	  #TODO: NEED TO GO OVER THIS SYNTAX AGAIN.
           go-hello = pkgs.callPackage ./package.nix { };
         }
       );
 
-      # Add dependencies that are only needed for development
+      # Add dependencies that are only needed for development, this also allows for nix develop command to launch a devshell
       devShells = forAllSystems (
         system:
         let

package.nix

@@ -1,6 +1,9 @@
 { buildGoModule, gitMinimal }:
+# This is the wrapping around mkderivation that abstracts away the standard boilerplate logic for building go packages.
 buildGoModule {
+  # The final built binary name.
   pname = "go-hello";
+  # The binary version | NEEDS TO BE IN STEP WITH GO MOD.
   version = "v1.0.0";
   # In 'nix develop', we don't need a copy of the source tree
   # in the Nix store.
@@ -8,8 +11,10 @@ buildGoModule {
     name = "source";
     path = ./.;
   };
-  vendorHash = null;
+
+  # required deps for build time nativeBuildInputs are runtime deps
   buildInputs = [
+    # Just an example input
     gitMinimal
   ];
   # This hash locks the dependencies of this package. It is
@@ -21,5 +26,5 @@ buildGoModule {
   # To begin with it is recommended to set this, but one must
   # remember to bump this hash when your dependencies change.
   # vendorHash = pkgs.lib.fakeHash;
-
+  vendorHash = null;
 }