#Top-level dirs:
^alex/
^common-rts/
-^compiler/
^CONTRIB/
^dll/
^greencard/
^libraries/network/
^libraries/parsec/
^libraries/readline/
+^libraries/regex-base/
+^libraries/regex-compat/
+^libraries/regex-posix/
^libraries/stm/
^libraries/template-haskell/
^libraries/time/