will not compile 64bit

Binary package hint: twidge

I cannot get twidge to recompile using the repository sources. using the command `sudo apt-get --build source twidge` the following output occurs:

./setup configure
Configuring twidge-0.99.3...
./setup build
Preprocessing executables for twidge-0.99.3...
Building twidge-0.99.3...
[ 1 of 13] Compiling Download ( Download.hs, dist/build/twidge/twidge-tmp/Download.o )
[ 2 of 13] Compiling FeedParser ( FeedParser.hs, dist/build/twidge/twidge-tmp/FeedParser.o )
[ 3 of 13] Compiling MailParser ( MailParser.hs, dist/build/twidge/twidge-tmp/MailParser.o )
[ 4 of 13] Compiling Types ( Types.hs, dist/build/twidge/twidge-tmp/Types.o )
[ 5 of 13] Compiling Utils ( Utils.hs, dist/build/twidge/twidge-tmp/Utils.o )
[ 6 of 13] Compiling Commands.Update ( Commands/Update.hs, dist/build/twidge/twidge-tmp/Commands/Update.o )
[ 7 of 13] Compiling Commands.Follow ( Commands/Follow.hs, dist/build/twidge/twidge-tmp/Commands/Follow.o )
[ 8 of 13] Compiling Paths_twidge ( dist/build/autogen/Paths_twidge.hs, dist/build/twidge/twidge-tmp/Paths_twidge.o )
[ 9 of 13] Compiling Config ( Config.hs, dist/build/twidge/twidge-tmp/Config.o )
[10 of 13] Compiling Commands.Setup ( Commands/Setup.hs, dist/build/twidge/twidge-tmp/Commands/Setup.o )
[11 of 13] Compiling Commands.Ls ( Commands/Ls.hs, dist/build/twidge/twidge-tmp/Commands/Ls.o )
[12 of 13] Compiling Commands ( Commands.hs, dist/build/twidge/twidge-tmp/Commands.o )
[13 of 13] Compiling Main ( ./twidge.hs, dist/build/twidge/twidge-tmp/Main.o )
Linking dist/build/twidge/twidge ...
ghc-6.8.2: unknown package: regex-compat-0.91
make: *** [all] Error 1

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libghc6-regex-compat-dev is installed and latest.