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-rw-r--r--bpkg/pkg-build-collect.hxx17
1 files changed, 10 insertions, 7 deletions
diff --git a/bpkg/pkg-build-collect.hxx b/bpkg/pkg-build-collect.hxx
index ece3d90..122ed22 100644
--- a/bpkg/pkg-build-collect.hxx
+++ b/bpkg/pkg-build-collect.hxx
@@ -1237,12 +1237,13 @@ namespace bpkg
//
// Consult replaced_vers for an existing version replacement entry and
// follow it, if present, potentially collecting the package drop instead.
- // Ignore the entry if its version doesn't satisfy the dependency
- // constraints specified by the caller. In this case it's likely that this
- // replacement will be applied for some later collect_build() call but can
- // potentially turn out bogus. Note that a version replacement for a
- // specific package may only be applied once during the collection
- // iteration.
+ // Ignore the entry if its version doesn't satisfy the specified
+ // dependency constraints or the entry is a package drop and the specified
+ // required-by package names have the "required by dependents" semantics.
+ // In this case it's likely that this replacement will be applied for some
+ // later collect_build() call but can potentially turn out bogus. Note
+ // that a version replacement for a specific package may only be applied
+ // once during the collection iteration.
//
// Add entry to replaced_vers and throw replace_version if the
// existing version needs to be replaced but the new version cannot be
@@ -1544,7 +1545,9 @@ namespace bpkg
const function<find_database_function>&,
const function<add_priv_cfg_function>&);
- // Collect the package being dropped.
+ // Collect the package being dropped. Noop if the specified package is
+ // already being built and its required-by package names have the
+ // "required by dependents" semantics.
//
// Add entry to replaced_vers and throw replace_version if the existing
// version needs to be dropped but this can't be done in-place (see