How to set up greek math fonts fonts for Minion Pro in LuaLaTex

Question

In XeLaTex and using mathspec, one can simply use text Greek letters of Minion Pro for math symbols:

\documentclass{article}
\usepackage{mathtools}
\usepackage{mathspec}
\usepackage{fontspec}
\setmainfont{Minion Pro}
\setmathsfont(Digits,Greek,Latin)[Numbers={Proportional}]{Minion Pro}
\setmathrm{Minion Pro}
\begin{document} 
    Here is an equation.
    \begin{equation}
    |\psi_{u,v}|^2 = 1
    \end{equation}
\end{document}

I want to achieve the same in LuaLaTex using unicode-math and mathastext. Following the answer here, I ended up with

\documentclass{article}
\usepackage{mathtools}
\usepackage{fontspec}
\usepackage{unicode-math}
\setmainfont{MinionPro}
\setmathfont[range=\mathup/{num,latin,Latin,greek,Greek}]{MinionPro}
\setmathfont[range=\mathbfup/{num,latin,Latin,greek,Greek}]{MinionPro-Bold}
\setmathfont[range=\mathit/{num,latin,Latin,greek,Greek}]{MinionPro-It}
\setmathfont[range=\mathbfit/{num,latin,Latin,greek,Greek}]{MinionPro-BoldIt}
\setmathrm{MinionPro}
\usepackage[italic]{mathastext}
\begin{document} 
    Here is an equation.
    \begin{equation}
|\psi_{u,v}|^2 = 1
\end{equation}
\end{document}

that yields the error below:

Package unicode-math Error: No main maths font has been set up yet. \setmathfont

But I have already set a math font. What is a work-around here?