add a cronjob for haddock indexing and disable gen_contents_index by default

gen_contents_index is run with --batch by cronjob, otherwise does nothing.
This avoids overhead of running of re-indexing each time
a ghc-*-devel package is installed, updated, or removed.

ghc-doc-index.cron

@@ -0,0 +1,39 @@
+#! /bin/bash
+
+if [ -e /etc/sysconfig/ghc-doc-index ]; then
+    . /etc/sysconfig/ghc-doc-index
+fi
+
+if [ "$CRON" = "no" ]; then
+   exit 0
+fi
+
+
+LOCKFILE=/var/lock/ghc-doc-index.lock
+
+# the lockfile is not meant to be perfect, it's just in case the
+# two man-db cron scripts get run close to each other to keep
+# them from stepping on each other's toes.  The worst that will
+# happen is that they will temporarily corrupt the database
+[ -f $LOCKFILE ] && exit 0
+
+trap "{ rm -f $LOCKFILE ; exit 255; }" EXIT
+touch $LOCKFILE
+
+# only re-index ghc docs when there are changes
+cd /usr/share/doc/ghc/html/libraries
+if [ -r .pkg-dir.cache ]; then
+  ls -d */ > .pkg-dir.cache.new
+  DIR_DIFF=$(diff .pkg-dir.cache .pkg-dir.cache.new)
+else
+  ls -d */ > .pkg-dir.cache
+fi
+if [ -x "gen_contents_index" -a ! -r ".pkg-dir.cache.new" -o -n "$DIR_DIFF" ]; then
+  ./gen_contents_index --batch
+fi
+
+if [ -f .pkg-dir.cache.new ]; then
+  mv -f .pkg-dir.cache{.new,}
+fi
+
+exit 0

ghc-gen_contents_index-cron-batch.patch

@@ -0,0 +1,23 @@
+diff -u ghc-6.12.3/libraries/gen_contents_index\~ ghc-6.12.3/libraries/gen_contents_index
+--- ghc-6.12.3/libraries/gen_contents_index~	2010-09-14 13:03:12.000000000 +1000
++++ ghc-6.12.3/libraries/gen_contents_index	2010-11-04 18:26:00.000000000 +1000
+@@ -21,6 +21,6 @@
+         HADDOCK_ARGS="$HADDOCK_ARGS $HADDOCK_ARG"
+     done
+     ;;
+-*)
++--batch)
+     HADDOCK=/usr/bin/haddock
+     # We don't want the GHC API to swamp the index
+@@ -32,6 +32,9 @@
+         HADDOCK_ARGS="$HADDOCK_ARGS $HADDOCK_ARG"
+     done
+     ;;
++    *)
++    HADDOCK=/bin/true
++    tty -s && echo Run with '--batch' to index package haddock docs.
+ esac
+ 
+ # Now create the combined contents and index pages
+
+Diff finished.  Thu Nov  4 18:26:04 2010

ghc.spec

@@ -26,7 +26,7 @@
 Name: ghc
 # part of haskell-platform-2010.2.0.0
 Version: 6.12.3
-Release: 7%{?dist}
+Release: 8%{?dist}
 Summary: Glasgow Haskell Compilation system
 # fedora ghc has only been bootstrapped on the following archs:
 ExclusiveArch: %{ix86} x86_64 ppc alpha
@@ -39,6 +39,7 @@ Source1: http://www.haskell.org/ghc/dist/%{version}/ghc-%{version}-src-extralibs
 %if %{with testsuite}
 Source2: http://www.haskell.org/ghc/dist/%{version}/testsuite-%{version}.tar.bz2
 %endif
+Source3: ghc-doc-index.cron
 URL: http://haskell.org/ghc/
 BuildRoot: %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
 # introduced for f14
@@ -69,6 +70,7 @@ BuildRequires: python
 %endif
 Patch1: ghc-6.12.1-gen_contents_index-haddock-path.patch
 Patch2: ghc-gen_contents_index-type-level.patch
+Patch3: ghc-gen_contents_cron-batch.patch
 
 %description
 GHC is a state-of-the-art programming suite for Haskell, a purely
@@ -113,6 +115,8 @@ They should be installed when GHC's profiling subsystem is needed.
 %patch1 -p1 -b .orig
 # type-level too big so skip it in gen_contents_index
 %patch2 -p1
+# disable gen_contents_index when not --batch for cron
+%patch3 -p1
 
 # make sure we don't use these
 rm -r ghc-tarballs/{mingw,perl}
@@ -190,6 +194,10 @@ done
 
 %ghc_strip_dynlinked
 
+%if %{with doc}
+mkdir -p %{_sysconfdir}/cron.hourly
+install -p --mode=755 %SOURCE3 %{_sysconfdir}/cron.hourly/ghc-doc-index
+%endif
 
 %check
 # stolen from ghc6/debian/rules:
@@ -269,6 +277,7 @@ fi
 %ghost %{ghcdocbasedir}/libraries/index*.html
 %ghost %{ghcdocbasedir}/libraries/minus.gif
 %ghost %{ghcdocbasedir}/libraries/plus.gif
+%{_sysconfdir}/cron.hourly/ghc-doc-index
 %endif
 
 %if %{with shared}
@@ -282,6 +291,10 @@ fi
 %endif
 
 %changelog
+* Thu Nov  4 2010 Jens Petersen <petersen@redhat.com> - 6.12.3-8
+- add a cronjob for doc indexing
+- disable gen_contents_index when not run with --batch for cron
+
 * Thu Nov  4 2010 Jens Petersen <petersen@redhat.com> - 6.12.3-7
 - skip huge type-level docs from haddock re-indexing (#649228)