diff --git a/.envrc b/.envrc
index 1c9a792..01a265b 100644
--- a/.envrc
+++ b/.envrc
@@ -2,9 +2,6 @@ if ! has nix_direnv_version || ! nix_direnv_version 2.2.1; then
     source_url "https://raw.githubusercontent.com/nix-community/nix-direnv/2.2.1/direnvrc" "sha256-zelF0vLbEl5uaqrfIzbgNzJWGmLzCmYAkInj/LNxvKs="
 fi
 
-export WEBPORT=$(($RANDOM + 1100))
-export PGPORT=$(($WEBPORT + 100))
-export PROJECT_DIR=$(pwd)
 
 nix_direnv_watch_file devenv.nix
 nix_direnv_watch_file devenv.lock
diff --git a/flake.nix b/flake.nix
index 0bf5447..d37ea57 100644
--- a/flake.nix
+++ b/flake.nix
@@ -33,6 +33,9 @@
             modules = [
               {
                 enterShell = ''
+                  export WEBPORT=$(($RANDOM + 1100))
+                  export PGPORT=$(($WEBPORT + 100))
+                  export PROJECT_DIR=$(pwd)
                   ln -sf ${config.process-managers.process-compose.configFile} ${config.env.DEVENV_ROOT}/process-compose.yml
                 '';
                 packages = [ (pkgs.writeScriptBin "dev" "${builtins.readFile ./dev.sh}") ];