Actually the first debdiff misses one needed change. Revision attached.
diff -u ruby-prof-0.7.3/debian/control ruby-prof-0.7.3/debian/control
--- ruby-prof-0.7.3/debian/control
+++ ruby-prof-0.7.3/debian/control
@@ -3,11 +3,11 @@
Priority: optional
Maintainer: Arnaud Cornet <acor...@debian.org>
Standards-Version: 3.8.1
-Build-Depends: debhelper (>= 7), quilt, ruby, ruby1.8-dev
+Build-Depends: debhelper (>= 7), quilt, ruby, ruby1.8, ruby1.8-dev
Package: ruby-prof
Architecture: any
-Depends: ruby (>= 1.8), rake, ${shlibs:Depends}, ${misc:Depends}
+Depends: ruby1.8, rake, ${shlibs:Depends}, ${misc:Depends}
Description: A fast code profiler for Ruby
ruby-prof is runs a ruby program and keeps track of the amount of time spent
in each method. At the end of execution it displays collected information.
diff -u ruby-prof-0.7.3/debian/changelog ruby-prof-0.7.3/debian/changelog
--- ruby-prof-0.7.3/debian/changelog
+++ ruby-prof-0.7.3/debian/changelog
@@ -1,3 +1,14 @@
+ruby-prof (0.7.3-1.1) unstable; urgency=low
+
+ * Non-maintainer upload.
+ * Specify building with ruby1.8 and not just ruby in debian/rules to
+ fix FTBFS now that ruby1.9.1 is default (Closes: #676087)
+ * Manually create debian/ruby-prof/usr/lib/ruby/1.8 in install rule so files
+ are copied to the correct destination
+ * Directly build-depend and depend on ruby1.8 since it's no longer default
+
+ -- Scott Kitterman <sc...@kitterman.com> Mon, 09 Jul 2012 23:39:26 -0400
+
ruby-prof (0.7.3-1) unstable; urgency=low
* New Upstream Version.
diff -u ruby-prof-0.7.3/debian/rules ruby-prof-0.7.3/debian/rules
--- ruby-prof-0.7.3/debian/rules
+++ ruby-prof-0.7.3/debian/rules
@@ -2,11 +2,11 @@
include /usr/share/quilt/quilt.make
-RUBY_ARCHDIR=$(strip $(shell ruby -rrbconfig -e 'puts Config::CONFIG["archdir"]'))
+RUBY_ARCHDIR=$(strip $(shell ruby1.8 -rrbconfig -e 'puts Config::CONFIG["archdir"]'))
build: patch
dh build --until dh_auto_configure
- (cd ext && ruby extconf.rb)
+ (cd ext && ruby1.8 extconf.rb)
make -C ext
dh build --after dh_auto_build
@@ -21,6 +21,7 @@
dh install --until dh_auto_install
mkdir -p debian/ruby-prof/$(RUBY_ARCHDIR)
mkdir -p debian/ruby-prof/usr/bin
+ mkdir -p debian/ruby-prof/usr/lib/ruby/1.8
cp -r lib/ruby-prof debian/ruby-prof/usr/lib/ruby/1.8
cp lib/*.rb debian/ruby-prof/usr/lib/ruby/1.8
chmod a-x debian/ruby-prof/usr/lib/ruby/1.8/ruby-prof/*.rb
