hermetic: do not install buildroot via DNF

Fixes: #1522
rpm-software-management · Dec 18, 2024 · 254392a · 254392a
1 parent 9f0247c
commit 254392a
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diff --git a/mock/py/mockbuild/config.py b/mock/py/mockbuild/config.py
@@ -810,6 +810,10 @@ def process_hermetic_build_config(cmdline_opts, config_opts):
     # with the same image.
     config_opts["bootstrap_image_assert_digest"] = data["bootstrap"]["image_digest"]
 
+    # It doesn't make sense to fallback to `dnf install dnf --installroot ...`,
+    # we simply don't have DNF stack pre-downloaded in offline_local_repository.
+    config_opts["bootstrap_image_fallback"] = False
+
 
 @traceLog()
 def nice_root_alias_error(name, alias_name, arch, no_configs, log):

diff --git a/releng/release-notes-next/no-bootstrap-installation-with-dnf.bugfix b/releng/release-notes-next/no-bootstrap-installation-with-dnf.bugfix
@@ -0,0 +1,4 @@
+The [hermetic mode](feature-hermetic-builds) no longer fallbacks to a manual
+bootstrap installation using the hosts's DNF stack; it doesn't make sense
+because we don't have the bootstrap packages pre-downloaded in the local
+"offline" repository.  Fixes [issue#1522][].