\ProvidesPackage{libertineMono}[%
  2024/04/20 (Bob Tennent) Supports Libertine Mono fonts for all LaTeX engines.] 

\RequirePackage{ifxetex,ifluatex,xkeyval,textcomp}

\newif\iflibertine@otf
\ifxetex
  \libertine@otftrue
\else\ifluatex
  \libertine@otftrue
\else  % [pdf]LaTeX
  \libertine@otffalse
\fi\fi

\DeclareOptionX{type1}[true]{%
\@nameuse{if#1}\libertine@otffalse\fi
}
\DeclareOptionX{nofontspec}[true]{%
\@nameuse{if#1}\libertine@otffalse\fi
}

\newcommand*{\LinuxLibertineMonoT@scale}{1}  
\DeclareOptionX{ttscaled}{\renewcommand*{\LinuxLibertineMonoT@scale}{#1}}
\DeclareOptionX{ttscale}{\renewcommand*{\LinuxLibertineMonoT@scale}{#1}}
\DeclareOptionX{scale}{\renewcommand*{\LinuxLibertineMonoT@scale}{#1}}
\DeclareOptionX{scaled}{\renewcommand*{\LinuxLibertineMonoT@scale}{#1}}

\ProcessOptionsX\relax

\iflibertine@otf
  \RequirePackage{fontspec}
\else
  \RequirePackage{mweights}
  \RequirePackage{fontenc,fontaxes}
\fi

% Set mono fonts:

\iflibertine@otf

  \def\libertine@base{LinLibertine}
  \defaultfontfeatures{ Extension = .otf , HyphenChar=None} 
  % Don't want ligatures or hyphenation for mono 
    \setmonofont 
          [ Scale = \LinuxLibertineMonoT@scale,
            UprightFont    = *_M, 
            ItalicFont     = *_MO, % oblique to fake italic
            BoldFont       = *_MB,   % fontforge 
            BoldItalicFont = *_MBO,  % fontforge
          ] {\libertine@base}
  \newfontfamily\libmono
          [ Scale = \LinuxLibertineMonoT@scale,
            UprightFont    = *_M, 
            ItalicFont     = *_MO, % oblique to fake italic
            BoldFont       = *_MB,   % fontforge 
            BoldItalicFont = *_MBO,  % fontforge
          ] {\libertine@base}

\else % type1

  \def\ttdefault{LinuxLibertineMonoT-TLF} 
  \providecommand*\libmono{\fontfamily{LinuxLibertineMonoT-TLF}\selectfont}

\fi

\iflibertine@otf
% turn off defaults in case other fonts are selected:
  \defaultfontfeatures{}
\fi

\endinput