cat > /usr/share/X11/xorg.conf.d/10-keyboard.conf << "EOF"
Section "InputClass"
    Identifier         "Keyboard Defaults"
    MatchIsKeyboard    "yes"
    Option             "XkbLayout" "tr"
EndSection
EOF
ln -s /usr/share/X11/xorg.conf.d/10-keyboard.conf /etc/X11/xorg.conf.d/