Do not override PYTHONPATH when calling Python code from the Haskell
daemons.  This is necessary because the Python library dependencies are
only available through PYTHONPATH.

diff --git a/src/Ganeti/Query/Exec.hs b/src/Ganeti/Query/Exec.hs
--- a/src/Ganeti/Query/Exec.hs
+++ b/src/Ganeti/Query/Exec.hs
@@ -99,12 +99,10 @@ spawnJobProcess jid = withErrorLogAt CRITICAL (show jid) $
   do
     use_debug <- isDebugMode
     env_ <- (M.toList . M.insert "GNT_DEBUG" (if use_debug then "1" else "0")
-            . M.insert "PYTHONPATH" AC.pythondir
             . M.fromList)
            `liftM` getEnvironment
     execPy <- P.jqueueExecutorPy
     logDebug $ "Executing " ++ AC.pythonPath ++ " " ++ execPy
-               ++ " with PYTHONPATH=" ++ AC.pythondir
 
     (master, child) <- pipeClient connectConfig
     let (rh, wh) = clientToHandle child

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<tr><td><span title='2020-07-29 07:50:23 +0300'>2020-07-29</span></td><td><a href='/guix/commit/gnu/system/examples/desktop.tmpl?id=03914b9d8cc5918f495d1abeb97d783c8fc25fd7'>examples: Add password for Alice's brother.</a><span class='msg-avail'>...</span></td><td>Oleg Pykhalov</td></tr>