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-rw-r--r--bpkg/system-package-manager.hxx4
1 files changed, 3 insertions, 1 deletions
diff --git a/bpkg/system-package-manager.hxx b/bpkg/system-package-manager.hxx
index f4ce37e..ad3be36 100644
--- a/bpkg/system-package-manager.hxx
+++ b/bpkg/system-package-manager.hxx
@@ -209,7 +209,9 @@ namespace bpkg
// <distribution>-to-downstream-version values corresponding to
// name_id. If none match, then repeat the above process for every
// like_ids entry with version_id equal 0. If still no match, then return
- // nullopt.
+ // nullopt (in which case the caller may choose to fallback to the system
+ // package version or do something more elaborate, like translate
+ // version_id to the like_id's version and try that).
//
static optional<version>
downstream_package_version (const string& system_version,