Add just tool and zlib for Python venv extensions

home/modules/shell.nix

@@ -21,6 +21,8 @@
     };
 
     initContent = ''
+      export LD_LIBRARY_PATH="${pkgs.stdenv.cc.cc.lib}/lib:${pkgs.zlib}/lib''${LD_LIBRARY_PATH:+:$LD_LIBRARY_PATH}"
+
       autoload -Uz vcs_info
       precmd() { vcs_info }
       zstyle ':vcs_info:git:*' formats '%b'
@@ -28,10 +30,6 @@
       PROMPT='%F{green}%n@%m%f:%F{blue}%~%f %F{240}''${vcs_info_msg_0_}%f %# '
     '';
 
-    sessionVariables = {
-      LD_LIBRARY_PATH = "${pkgs.stdenv.cc.cc.lib}/lib";
-    };
-
     shellAliases = {
       cat = "bat";
     };