Ps

Ps finished merge request for add on master

pkgs/PS/default.nix

+{ stdenv, pkgs }:
+
+stdenv.mkDerivation {
+  name = "PS";
+  shellHook = ''
+      echo -e "\e[32m=============================================\e[0m"
+      echo -e "\e[32m=== Welcome to PS environment ===\e[0m"
+      echo -e "\e[32m=============================================\e[0m"
+    '';
+  buildInputs = [ 
+    pkgs.rWrapper
+    pkgs.rstudioWrapper
+  ];
+
+}
+
+