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This is a SlapOS recipe to build NayuOS. It needs to be put in the /srv/slapgrid/<part>/srv/runner/project/slapos/software/ directory. The created directory is called <nayuos_build_dirname> in this documentation.


GPL v2 or later


  • sudo on the host (for now)
  • some environment variables need to be authorized to be propagated when cros_sdk calls sudo:

: Defaults env_keep += "CROS_CACHEDIR DEPOT_TOOLS"

  • slapuser with sudo rights to execute the cros_sdk scripts (needed to access the chroot environment provided by Chromium OS) in /etc/sudoers (replace slapuser9 by your user, and release-R48-7647.B by the release you have chosen):

: slapuser9 ALL=NOPASSWD: /srv/slapgrid/slappart9/srv/runner/instance/slappart0/parts/chromiumos/release-R48-7647.B/chromite/bin/cros_sdk, /srv/slapgrid/slappart9/srv/runner/instance/slappart0/wrapper_bin/wrapper_cros_sdk, /bin/kill

It's useful to have the right to kill cros_sdk processes, when needed. ;)


In the vifib parameters (softinst<nb> > Services > Parameters):

  • board / ex: peppy, swanky, ... (choosing daisy will accept all licenses for the daisy board build only, in order to use Mali drivers, see chromium mailing list)
  • branch / ex: release-R46-7390.B (you can find the release in the Chromium OS source tree)
  • keep_cache / yes|no (choosing "no" saves about 15Go of disk space per board, choosing "yes" will makes next build faster and less expensive in term of needed ressources because of not rebuilding everything)


The image will be produced in: /srv/slapgrid/<part>/srv/runner/instance/<inst_part>/parts/chromiumos/images/ and the logs are in: /srv/slapgrid/<part>/srv/runner/instance/<inst_part>/var/log/cros_sources_dl.log and /srv/slapgrid/<part>/srv/runner/instance/<inst_part>/var/log/cros_build.log

The script that download the sources and build is located in /srv/slapgrid/<part>/srv/runner/instance/<inst_part>/etc/run

External documents

Notes for possible improvements

  • Running virtual machines on your chromebook
  • to have a more common User Agent (the one of ChromiumOS/NayuOS is quite rare and identifies the user, see studies of the EFF), it seems possible to change the User-Agent flag for guest mode in the getOffTheRecord function, and adding a line (key "kUserAgent" , value "some common user agent" string). Then rebuild Chromium and add it to NayuOS.
  • remove need of root priviledge for entering the chroot, maybe by using fakeroot in 'scripts/'?