[gnome-builder/wip/chergert/fix-ci] build: attempt to fix ci

[Christian Hergert <chergert src gnome org>]

commit c6f53774871b89f4720cedf0b2aac8233fe12020
Author: Christian Hergert <chergert redhat com>
Date:   Wed Jul 28 11:24:34 2021 -0700

    build: attempt to fix ci

 .gitlab-ci.yml | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 674fe53e4..7009219d7 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,20 +1,22 @@
 include: 'https://gitlab.gnome.org/GNOME/citemplates/raw/master/flatpak/flatpak_ci_initiative.yml'
 
 flatpak:
-    extends: .flatpak
-    variables:
-        GIT_SUBMODULE_STRATEGY: normal
-
-        # Replace with your manifest path
-        MANIFEST_PATH: "build-aux/flatpak/org.gnome.Builder.json"
-        RUNTIME_REPO: "https://nightly.gnome.org/gnome-nightly.flatpakrepo";
-        # Replace with your application name, as written in the manifest
-        FLATPAK_MODULE: "gnome-builder"
-        APP_ID: "org.gnome.Builder"
-        BUNDLE: "gnome-builder-git.flatpak"
+  extends: .flatpak
+  variables:
+    GIT_SUBMODULE_STRATEGY: normal
 
+    # Replace with your manifest path
+    MANIFEST_PATH: "build-aux/flatpak/org.gnome.Builder.json"
+    RUNTIME_REPO: "https://nightly.gnome.org/gnome-nightly.flatpakrepo";
+    # Replace with your application name, as written in the manifest
+    FLATPAK_MODULE: "gnome-builder"
+    APP_ID: "org.gnome.Builder"
+    BUNDLE: "gnome-builder-git.flatpak"
+  before_script:
+    - flatpak --user remote-add --if-not-exists flathub-beta 
https://flathub.org/beta-repo/flathub-beta.flatpakrepo
+    - flatpak --user install flathub-beta org.freedesktop.Sdk.Extension.llvm12//21.08beta
 
 nightly:
-  extends: '.publish_nightly'
-  dependencies:
+    extends: '.publish_nightly'
+    dependencies:
         - 'flatpak'