Fix endless loop in `pyenv init -` under SSH in some shell setups (#2374)

libexec/pyenv-init

@@ -148,7 +148,14 @@ function print_path() {
       echo 'set -gx PATH '\'"${PYENV_ROOT}/shims"\'' $PATH'
       ;;
     * )
-      echo 'PATH="$(bash -ec '\''IFS=:; paths=($PATH); for i in ${!paths[@]}; do if [[ ${paths[i]} == "'\'"${PYENV_ROOT}/shims"\''" ]]; then unset '\'\\\'\''paths[i]'\'\\\'\''; fi; done; echo "${paths[*]}"'\'')"'
+      # Some distros (notably Debian-based) set Bash's SSH_SOURCE_BASHRC compilation option
+      # that makes it source `bashrc` under SSH even when not interactive.
+      # This is inhibited by a guard in Debian's stock `bashrc` but some people remove it
+      # in order to get proper environment for noninteractive remote commands
+      # (SSH provides /etc/ssh/sshrc and ~/.ssh/rc for that but no-one seems to use them for some reason).
+      # This has caused an infinite `bashrc` execution loop for those people in the below nested Bash invocation (#2367).
+      # --norc negates this behavior of such a customized Bash.
+      echo 'PATH="$(bash --norc -ec '\''IFS=:; paths=($PATH); for i in ${!paths[@]}; do if [[ ${paths[i]} == "'\'"${PYENV_ROOT}/shims"\''" ]]; then unset '\'\\\'\''paths[i]'\'\\\'\''; fi; done; echo "${paths[*]}"'\'')"'
       echo 'export PATH="'"${PYENV_ROOT}"'/shims:${PATH}"'
       ;;
   esac