Switch from flags to an 'additional repository' menu (#977)

* Add multilib flag to enable this repository and enable multi-lib testing if testing flag is also passed

* Fix comments

* Attempt to force pacman to use the config file from the host

* Make sure the pacman configuration is copied to target

* flake8

* Call enable on additional-repositories

* Add method to select additional repositories

* Add menu option for additional repos

* This is a bit cleaner than having it all on one line

* Add import

* Use [] as default instead of None

* Use empty array for default option here

* Try this to ensure a valid array is returned on skipping

* Add additional-repositories to schema

* Missed changing this comment earlier

1 files changed, 8 insertions, 0 deletions

diff --git a/schema.json b/schema.json
index bbb0b8c9..aacf3f07 100644
--- a/schema.json
+++ b/schema.json
@@ -4,6 +4,14 @@
     "description": "A schema for the archinstall command config, more info over at https://archinstall.readthedocs.io/installing/guided.html#options-for-config",
     "type": "object",
     "properties": {
+        "additional-repositories": {
+            "description": "Additional repositories to optionally enable",
+            "type": "string",
+            "enum": [
+                "multilib",
+                "testing"
+            ]
+        },
         "audio": {
             "description": "Audio server to be installed",
             "type": "string",