Accents with eulervm and LuaLaTeX

Question

I use the euler font for math and compile with LuaLaTeX. To solve a problem with the accent \bar, I load unicode-math which resets the mathfont: :

Why does unicode-math overwrite eulervm and how can I get back to the correct font?

Here is my MWE:

% !TeX program = lualatex

\documentclass{scrartcl}

\usepackage{amsmath}
\usepackage[euler-digits]{eulervm}
\usepackage[no-math]{fontspec}
\usepackage{unicode-math}

\begin{document}

\begin{align}
    E &= mc^2\\
    \bar{y}
\end{align}

\end{document}

Answer 1

You surely don't want to load unicode-math in order to solve the problem with \bar not being defined. Just pass the correct option to euler-vm, which cannot cope with TU (or EU2).

\documentclass{scrartcl}

\usepackage{amsmath}
\usepackage[no-math]{fontspec}
\usepackage[OT1,euler-digits]{eulervm}

\begin{document}

\begin{align}
    E &= mc^2\\
    \bar{y}
\end{align}

\end{document}