\DeclareFontFamily{T1}{DejaVuSansMono}{}
\DeclareFontShape{T1}{DejaVuSansMono}{m}{n}{ <-> s*[0.8] T1DejaVuSansMono}{}
\DeclareFontShape{T1}{DejaVuSansMono}{bx}{n}{ <-> s*[0.8] T1DejaVuSansMono-Bold}{}
\DeclareFontShape{T1}{DejaVuSansMono}{m}{sl}{ <-> s*[0.8] T1DejaVuSansMono-Oblique}{}
\DeclareFontShape{T1}{DejaVuSansMono}{bx}{sl}{ <-> s*[0.8] T1DejaVuSansMono-BoldOblique}{}