Please consider merging the sbuild-overhaul branch of repo https://git.spwhitton.name/propellor.

* File.isSymlinkedTo now revertable. (minor API change)
* Sbuild module changes:
  - Type of Sbuild.built changed to accept additional properties to be ensured
    inside schroots. (API change)
    See the suggested usage in module's documentation for new syntax.
  - Drop Sbuild.installed, Sbuild.builtFor, Sbuild.updated,
    Sbuild.updatedFor. (API change)
    Use Sbuild.built instead.  See suggested usage in module's documentation.
  - Propellor no longer sets up apt proxies in chroots automatically.
    Instead, pass the new Sbuild.useHostProxy to Sbuild.built to have Propellor
    propagate the host's Apt proxy configuration into the chroot.  See suggested
    usage in module's documentation.
  - Internally, Propellor no longer invokes sbuild-createchroot(1) to build
    schroots.
  - Update documentation.

--spwhitton

merged --Joey