I have now setup an Arch VM with fluxbox as windows manager, using the
minimum system I could get working.
With that, only the following in bld_prepare was needed to build
Cinelerra-gg:
"arch")
  pacman -Syu gtk2 nasm yasm cmake fftw patchelf boost boost-libs \
  base-devel libvdpau libva perl-xml-parser perl-carp libogg texinfo \
  libsndfile
  ;;