Make propellor resistent to changes to shared libraries, such as libffi

* Make propellor resistent to changes to shared libraries, such as libffi,
  which might render the propellor binary unable to run. This is dealt with
  by checking the binary both when running propellor on a remote host,
  and by Cron.runPropellor. If the binary doesn't work, it will be rebuilt.
* Note that since a new switch had to be added to allow testing the binary,
  upgrading to this version will cause a rebuild from scratch of propellor.

1 files changed, 3 insertions, 1 deletions

diff --git a/src/Propellor/Property/Cron.hs b/src/Propellor/Property/Cron.hs
index 2a28a157..222f3849 100644
--- a/src/Propellor/Property/Cron.hs
+++ b/src/Propellor/Property/Cron.hs
@@ -3,6 +3,7 @@ module Propellor.Property.Cron where
 import Propellor
 import qualified Propellor.Property.File as File
 import qualified Propellor.Property.Apt as Apt
+import Propellor.Bootstrap
 import Utility.SafeCommand
 import Utility.FileMode
 
@@ -81,4 +82,5 @@ niceJob desc times user cddir command = job desc times user cddir
 
 -- | Installs a cron job to run propellor.
 runPropellor :: Times -> Property NoInfo
-runPropellor times = niceJob "propellor" times "root" localdir "./propellor"
+runPropellor times = niceJob "propellor" times "root" localdir
+	(bootstrapPropellorCommand ++ "; ./propellor")