DEB_BUILD_OPTIONS="parallel=$(mdw-conf make-parallel 4)"
export DEB_BUILD_OPTIONS
+## Turn on useful colouring.
+if __mdw_programp dircolors; then eval $(dircolors -b "$HOME/.dircolors")
+else unset LS_COLORS; fi
+export GREP_COLORS="mt=01;31:ms=01;31:mc=031;31:fn=36:ln=36:bn=36:se=34"
+export DIFF_COLORS="hd=1:ln=36:ad=32:de=31"
+
## Turn off angry fruit salad error messages from things.
DPKG_COLORS=never; export DPKG_COLORS
GCC_COLORS=; export GCC_COLORS