use the new watch-print command of direnv

This is only part of direnv 2.33.0, so we need to bump the minimum.
We probably wait to merge this PR until this direnv version is reasonably
widely available: https://packages.debian.org/de/sid/direnv

Author: Mic92

direnvrc

@@ -4,7 +4,7 @@ NIX_DIRENV_VERSION=2.5.1
 
 # min required versions
 BASH_MIN_VERSION=5.2
-DIRENV_MIN_VERSION=2.21.3
+DIRENV_MIN_VERSION=2.33.0
 NIX_MIN_VERSION=2.4
 
 _NIX_DIRENV_LOG_PREFIX="nix-direnv: "
@@ -210,19 +210,13 @@ _nix_direnv_watches() {
   if [[ -z "${DIRENV_WATCHES-}" ]]; then
     return
   fi
-  while IFS= read -r line; do
-    local regex='"[Pp]ath": "(.+)"$'
-    if [[ "$line" =~ $regex ]]; then
-      local path="${BASH_REMATCH[1]}"
-      if [[ "$path" == "${XDG_DATA_HOME:-${HOME:-/var/empty}/.local/share}/direnv/allow/"* ]]; then
-        continue
-      fi
-      # expand new lines and other json escapes
-      # shellcheck disable=2059
-      path=$(printf "$path")
-      _watches+=("$path")
+  local allow_dir = "${XDG_DATA_HOME:-${HOME:-/var/empty}/.local/share}/direnv/allow/"
+  while IFS= read -r -d '' line; do
+    if [[ "$line" == "$allow_dir"* ]]; then
+      continue
     fi
-  done < <(direnv show_dump "${DIRENV_WATCHES}")
+    _watches+=("$line")
+  done < <(direnv watch-print --null)
 }
 
 _nix_direnv_manual_reload=0