Add envrc and shell.nix

.envrc

@@ -0,0 +1 @@
+use_nix

shell.nix

@@ -0,0 +1,12 @@
+{ pkgs ? import <nixpkgs> { } }:
+pkgs.mkShell {
+  shellHook = ''
+    export NO_COLOR=true
+    export PS1="\u@\h:\w; "
+  '';
+
+  nativeBuildInputs = with pkgs.buildPackages; [
+    go
+    go-tools
+  ];
+}