diff -ubr happy-1.18.6-orig/Setup.lhs happy-1.18.6/Setup.lhs
--- happy-1.18.6-orig/Setup.lhs	2013-04-19 14:17:10.865999210 +0200
+++ happy-1.18.6/Setup.lhs	2013-04-19 14:17:15.285214809 +0200
@@ -25,7 +25,7 @@
 -- hack to turn cpp-style '# 27 "GenericTemplate.hs"' into 
 -- '{-# LINE 27 "GenericTemplate.hs" #-}'.
 crazy_perl_regexp =
- "s/^#\\s+(\\d+)\\s+(\"[^\"]*\")/{-# LINE \\1 \\2 #-}/g;s/\\$(Id:.*)\\$/\\1/g"
+ "s/^#\\s+(\\d+)\\s+(\"[^\"]*\").*/{-# LINE \\1 \\2 #-}/g;s/\\$(Id:.*)\\$/\\1/g"
 
 myPostBuild _ flags _ lbi = do
   let runProgram p = rawSystemProgramConf (buildVerbose flags) p (withPrograms lbi)