diff --git a/local/packages-to-build.R b/local/packages-to-build.R
index 0654a43..ead73b8 100644
--- a/local/packages-to-build.R
+++ b/local/packages-to-build.R
@@ -355,12 +355,30 @@ query_error <- function(pkg, ver) {
 }
 
 # Fetch all relevant columns from the database
+# Scoped to the snapshot's own R minor, like `check_package_error()` in
+# bincraft (#119) and the per-minor error query (#189). Unscoped, a single
+# failure under any one minor removed the package from the candidate list for
+# every minor, permanently: the row is keyed by (name, tag, platform, arch)
+# only, so an error under 4.6 also cancelled its 4.4 and 4.5 builds.
+#
+# That is what the residual per-minor gaps were. On amd64/alpine324, 505 of the
+# 508 ABI-risky packages missing from 4.4 were also missing from 4.6 -- a 99%
+# overlap, which per-minor build failures would not produce. None of them were
+# even attempted by the run that had just succeeded.
+#
+# Errors specific to another minor are still respected downstream:
+# `filter_packages_with_errors()` runs per pass with that pass's r_version.
 errored_pkgs <- DBI::dbGetQuery(
   con,
   sprintf(
-    "SELECT name, tag FROM single_builds WHERE error_occurred = TRUE and platform='%s' and arch='%s'",
+    paste0(
+      "SELECT name, tag FROM single_builds WHERE error_occurred = TRUE ",
+      "and platform='%s' and arch='%s' ",
+      "and substring(r_version from '^[0-9]+[.][0-9]+') = '%s'"
+    ),
     platform,
-    arch
+    arch,
+    snapshot_r_minor
   )
 )
 errored_pkgs <- as.data.table(errored_pkgs)