Package minted and tcolorbox produces LaTeX Error: Command \gather already defined

Question

After the massive update of the Miktex distribution, I have observed the collision between the minted package and tcolorbox. Interestingly, the compilation runs successfully if I remove the option most of the tcolorbox library. In other case I have seen the Latex error message:

! LaTeX Error: Command \gather already defined.

MNWE:

\listfiles
\documentclass{scrbook}
\usepackage{minted} 
\show\gather  
\usepackage[most]{tcolorbox}
\show\gather

\begin{document}
  Test
\end{document}

Answer 1

This is because of package lineno. The current version patches environment gather even, if it has not been defined before. So amsmath cannot be loaded after lineno any longer. So, because tcolorbox with option most loads amsmath, you should load minted (which loads lineno) after tcolorbox:

\listfiles
\documentclass{scrbook}
\usepackage[most]{tcolorbox}
\usepackage{minted} 

\begin{document}
  Test
\end{document}

And because current version of tcolorbox also has a module minted, I would suggest to use:

\listfiles
\documentclass{scrbook}
\usepackage[most,minted]{tcolorbox}

\begin{document}
  Test
\end{document}

Answer 2

Because of package dependencies, it might not be obvious which package loads what. Using \RequirePackage might be a safer option as it ensures amsmath is always loaded first.

\RequirePackage{amsmath}
\documentclass{scrbook}
\usepackage{minted}   
\usepackage[most]{tcolorbox}

\begin{document}
  Test
\end{document}