1 files changed, 5 insertions, 1 deletions
diff --git a/bin/why_dont_you b/bin/why_dont_you
index 2d28f85..8b2e49c 100755
--- a/bin/why_dont_you
+++ b/bin/why_dont_you
@@ -14,7 +14,11 @@ case "${action}" in
   'build')
 
     for pkg in "$@"; do
-      grep "^$(str_to_regex "${pkg}") " "${work_dir}/build-list" | \
+      (
+        grep "^$(str_to_regex "${pkg}") " "${work_dir}/build-list" || \
+        >&2 printf '"%s" is not on the build list.\n' "${pkg}"
+        continue
+      ) | \
         while read -r package git_revision mod_git_revision repository; do
 
           if [ -f "${work_dir}/package-states/${package}.${git_revision}.${mod_git_revision}.${repository}.done" ] ||