From 3545d0157f7fdb3a398324946fa7ca1f2c1edd69 Mon Sep 17 00:00:00 2001
From: Jonas Weber <jonas.weber@inxmail.de>
Date: Tue, 30 Jan 2018 12:04:19 +0100
Subject: [PATCH] Provide `--purge-if-absent` to __package_apt

Configuration files are not purged under Debian when the package
is deinstalled. If this parameter is given, they are deleted upon
package deinstallation.
---
 cdist/conf/type/__package_apt/gencode-remote    | 7 ++++++-
 cdist/conf/type/__package_apt/man.rst           | 3 +++
 cdist/conf/type/__package_apt/parameter/boolean | 1 +
 3 files changed, 10 insertions(+), 1 deletion(-)
 create mode 100644 cdist/conf/type/__package_apt/parameter/boolean

diff --git a/cdist/conf/type/__package_apt/gencode-remote b/cdist/conf/type/__package_apt/gencode-remote
index e3e31c2b..1a86e72c 100755
--- a/cdist/conf/type/__package_apt/gencode-remote
+++ b/cdist/conf/type/__package_apt/gencode-remote
@@ -35,6 +35,11 @@ else
    target_release=""
 fi
 
+if [ -f "$__object/parameter/purge-if-absent" ]; then
+	purgeparam="--purge"
+else
+	purgeparam=""
+fi
 
 
 # FIXME: use grep directly, state is a list, not a line!
@@ -57,7 +62,7 @@ case "$state_should" in
         echo $aptget install $target_release \"$name\"
     ;;
     absent)
-        echo $aptget remove \"$name\"
+        echo $aptget remove $purgeparam \"$name\"
     ;;
     *)
         echo "Unknown state: $state_should" >&2
diff --git a/cdist/conf/type/__package_apt/man.rst b/cdist/conf/type/__package_apt/man.rst
index 0a7958d4..991962e5 100644
--- a/cdist/conf/type/__package_apt/man.rst
+++ b/cdist/conf/type/__package_apt/man.rst
@@ -28,6 +28,9 @@ state
 target-release
     Passed on to apt-get install, see apt-get(8).
     Essentially allows you to retrieve packages from a different release
+purge-if-absent
+    If this parameter is given when state is `absent`, the package is
+    purged from the system (using `--purge`).
 
 EXAMPLES
 --------
diff --git a/cdist/conf/type/__package_apt/parameter/boolean b/cdist/conf/type/__package_apt/parameter/boolean
new file mode 100644
index 00000000..f9a0f6b0
--- /dev/null
+++ b/cdist/conf/type/__package_apt/parameter/boolean
@@ -0,0 +1 @@
+purge-if-absent