pgtap: fix audit warning

1 files changed, 12 insertions, 2 deletions

diff --git a/Library/Formula/pgtap.rb b/Library/Formula/pgtap.rb
index 0e003baa2..42b13253c 100644
--- a/Library/Formula/pgtap.rb
+++ b/Library/Formula/pgtap.rb
@@ -5,11 +5,21 @@ class Pgtap < Formula
   homepage 'http://pgtap.org'
   md5 '9d0360c87fca0ddf3ca9da49b9b71947'
 
-  depends_on 'postgresql'
-
   skip_clean :all
 
   def install
+    unless `/usr/bin/which pg_config`.size > 0
+      opoo "No pg_config was detected."
+      puts <<-EOS.undent
+        pg_top requires postgresql in order to compile, but pg_config was not
+        found. This install will likely fail.
+
+        You can install this with:
+          brew install postgresql
+        or by using a package installer from the PostgreSQL project itself.
+      EOS
+    end
+
     system "make install"
     bin.install %w(bbin/pg_prove bbin/pg_tapgen)
   end