diff --git a/src/modules/packages/main.py b/src/modules/packages/main.py
index aa4bb8b12..685cea0e5 100644
--- a/src/modules/packages/main.py
+++ b/src/modules/packages/main.py
@@ -478,7 +478,10 @@ def run_operations(pkgman, entry):
             else:
                 for package in package_list:
                     pkgman.install_package(package, from_local=True)
-
+        elif key == "source":
+            libcalamares.utils.debug("Package-list from {!s}".format(entry[key]))
+        else:
+            libcalamares.utils.warning("Unknown package-operation key {!s}".format(key))
         completed_packages += len(package_list)
         libcalamares.job.setprogress(completed_packages * 1.0 / total_packages)
         libcalamares.utils.debug(pretty_name())
diff --git a/src/modules/packages/packages.conf b/src/modules/packages/packages.conf
index e42e8e9b8..7b631d79e 100644
--- a/src/modules/packages/packages.conf
+++ b/src/modules/packages/packages.conf
@@ -55,22 +55,25 @@ update_system: false
 # that is in this configuration file).
 #
 # Allowed package operations are:
-#  - install, try_install: will call the package manager to
+#  - *install*, *try_install*: will call the package manager to
 #       install one or more packages. The install target will
 #       abort the whole installation if package-installation
 #       fails, while try_install carries on. Packages may be
 #       listed as (localized) names, or as (localized) package-data.
 #       See below for the description of the format.
-# - localInstall: this is used to call the package manager
+# - *localInstall*: this is used to call the package manager
 #       to install a package from a path-to-a-package. This is
 #       useful if you have a static package archive on the install media.
 #       The *pacman* package manager is the only one to specially support
 #       this operation (all others treat this the same as *install*).
-# - remove, try_remove: will call the package manager to
+# - *remove*, *try_remove*: will call the package manager to
 #       remove one or more packages. The remove target will
 #       abort the whole installation if package-removal fails,
 #       while try_remove carries on. Packages may be listed as
 #       (localized) names.
+# One additional key is recognized, to help netinstall out:
+# - *source*: ignored, does get logged
+# Any other key is ignored, and logged as a warning.
 #
 # There are two formats for naming packages: as a name or as package-data,
 # which is an object notation providing package-name, as well as pre- and