Try again

check.sh

 #!/usr/bin/env bash
 
-set -e
-
 ( ghc-homepage server || ( echo "serve failed"; exit 1 ) ) &
 
 # docs/ seems to be a URL rewrite rule provided by haskell.org
 # dist/mac_frameworks appears to be lost to history
+ret=0
 linkchecker http://localhost:8000 \
   --ignore-url 'docs/' \
   --ignore-url=dist/mac_frameworks \
-  || ( kill %1; exit 1 )
+  || ret=1
 kill %1
-
+exit $ret