Use makeidx with hyperref in beamer

Question

I am making kind of lecture notes for online lectures using the beamer class (in the presentation mode).

I need to use index. Using the advice from Is it bug or feature? I cannot use makeidx in beamer, I managed how to use makeidx in beamer for my needs.

However, the page numbers in the index are not links (not clickable).

I know that the 'standard' way is to load makeidx before hyperref, but beamer loads hyperref by itself. I know about \PassOptionsToPackage and \PassOptionsToClass, but is it possible to 'pass' package (makeidx) to class (beamer) to be load 'first' (whatever this means...)?

UPDATE MWE:

\documentclass{beamer}
\usepackage{makeidx}
\makeindex
\newenvironment{theindex}
 {\let\item\par%
  \let\subitem\par%
  }{}
\newcommand\indexspace{}
\begin{document}
\index{A}{Index entry example A}
\begin{equation}
    1+1=2 \label{eq}
\end{equation}

\newpage

\index{B}{Index entry example B}

Equation \eqref{eq} reference is clickable (try!).

\newpage

\printindex
\end{document}