Push every output of a selected pkgbase

--package meant a pkgbase to bin/build and a literal package name to
bin/push-build, so deploy --package nvidia-580xx-utils built three packages and
published one, leaving nvidia-580xx-dkms and opencl-nvidia-580xx behind with no
indication anything was missing. Hit while deploying exactly that package.

Selection now matches on the pkgbase recorded in .PKGINFO as well as on the
package name, so a pkgbase ships all of its outputs and an individual name
still selects just that one.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

bin/push-build

@@ -143,29 +143,41 @@ if [[ -z "$PACKAGES" && "$ASSUME_YES" == true ]] && ! on_repo_host; then
   exit 1
 fi
 
+# --package means the same thing here as it does to bin/build: a pkgbase, whose
+# every output ships together. Selecting only the artifact whose filename matched
+# would publish one third of a split package like nvidia-580xx-utils and silently
+# leave nvidia-580xx-dkms and opencl-nvidia-580xx behind. An output's own name
+# still matches, for pushing just one of them on purpose.
+#
+# pkgbase comes from .PKGINFO rather than the PKGBUILD: it is what makepkg
+# actually recorded, and it needs no guessing about which directory built what.
+pkgbase_of() {
+  bsdtar -xOf "$1" .PKGINFO 2>/dev/null |
+    awk -F ' = ' '$1 == "pkgbase" { print $2; exit }'
+}
+
 FILES=()
 if [[ -z "$PACKAGES" ]]; then
   FILES=("${ALL_FILES[@]}")
 else
+  declare -A MATCHED=()
   for file in "${ALL_FILES[@]}"; do
     # name-version-release-arch.pkg.tar.zst -> name
     pkgname="${file%-*-*-*.pkg.tar.*}"
+    pkgbase=$(pkgbase_of "$BUILD_OUTPUT_DIR/$file")
     for wanted in $PACKAGES; do
-      if [[ "$pkgname" == "$wanted" ]]; then
+      if [[ "$pkgname" == "$wanted" || "$pkgbase" == "$wanted" ]]; then
         FILES+=("$file")
+        MATCHED["$wanted"]=1
         break
       fi
     done
   done
 
   for wanted in $PACKAGES; do
-    found=false
-    for file in "${FILES[@]}"; do
-      [[ "${file%-*-*-*.pkg.tar.*}" == "$wanted" ]] && found=true && break
-    done
-    if [[ "$found" != true ]]; then
+    if [[ -z "${MATCHED[$wanted]:-}" ]]; then
       print_error "No built artifact for '$wanted' in $BUILD_OUTPUT_DIR"
-      print_warning "Split packages are named after their outputs, not their pkgbase"
+      print_warning "Name a package or the pkgbase it was built from"
       exit 1
     fi
   done