- nih install: a way to download ALL packages at once
- autoverifying pkgdb after installation
- optionally disable REQUIRES/PROVIDES checks
- separate pkg_install_plan script from nih
- nih install: use pkg_summary-YYYYMMDD.txt?
- Use pkg_summary-YYYYMMDD.txt
  and use such summaries for in 'nih clean-cache' and 'nih install'
- before update warn about missed binaries for installed packages
  (downgrade will not be possible)
- use distbb for source-based update
- 'nih install -k' ignore failures during downloads.
- nih audit
