bin/chroot-maint: Prevent debconf from messing things up.

diff --git a/bin/chroot-maint b/bin/chroot-maint
index a24d173..2f91e9c 100755 (executable)
--- a/bin/chroot-maint
+++ b/bin/chroot-maint
@@ -1477,6 +1477,12 @@ with toplevel_handler(): C = Config()
 CREATE = Tag("CREATE")
 FORCE = Tag("FORCE")
 
+DEBCONF_TWEAKS = """
+        DEBIAN_FRONTEND=noninteractive; export DEBIAN_FRONTEND
+        DEBIAN_PRIORITY=critical export DEBIAN_PRIORITY
+        DEBCONF_NONINTERACTIVE_SEEN=true; export DEBCONF_NONINTERACTIVE_SEEN
+"""
+
 def check_fresh(fresh, update):
   """
   Compare a refresh mode FRESH against an UPDATE time.
@@ -2222,7 +2228,8 @@ class ChrootJob (BaseJob):
 
       ## Finishing touches.
       progress("finishing touches")
-      run_schroot_source(dist, arch, ["eatmydata", "sh", "-e", "-c", """
+      run_schroot_source(dist, arch, ["eatmydata", "sh", "-e", "-c",
+        DEBCONF_TWEAKS + """
         apt-get update
         apt-get -y upgrade
         apt-get -y install "$@"
@@ -2240,7 +2247,8 @@ class ChrootJob (BaseJob):
     with Cleanup() as clean:
       dist, arch = me._dist, me._arch
       clean.enter(lockfile(chroot_src_lockfile(dist, arch)))
-      run_schroot_source(dist, arch, ["eatmydata", "sh", "-e", "-c", """
+      run_schroot_source(dist, arch, ["eatmydata", "sh", "-e", "-c",
+        DEBCONF_TWEAKS + """
         apt-get update
         apt-get -y dist-upgrade
         apt-get -y autoremove
@@ -2311,7 +2319,8 @@ class CrossToolsJob (BaseJob):
       ## Make sure the donor tree is up-to-date, and install the extra
       ## packages we need.
       progress("install tools packages")
-      run_schroot_session(session, ["eatmydata", "sh", "-e", "-c", """
+      run_schroot_session(session, ["eatmydata", "sh", "-e", "-c",
+        DEBCONF_TWEAKS + """
         apt-get update
         apt-get -y upgrade
         apt-get -y install "$@"