Bug#865017: haskell-hinotify FTBFS: hlibrary.setup: Encountered missing dependencies: async >=1.0 && <2.2

[Adrian Bunk]

Source: haskell-hinotify
Version: 0.3.9-1
Severity: serious

https://buildd.debian.org/status/package.php?p=haskell-hinotify&suite=sid

...
make_setup_recipe
Running ghc --make Setup.lhs -o debian/hlibrary.setup
[1 of 1] Compiling Main             ( Setup.lhs, Setup.o )
Linking debian/hlibrary.setup ...
. /usr/share/haskell-devscripts/Dh_Haskell.sh && \
configure_recipe
Running debian/hlibrary.setup configure --ghc -v2 --package-db=/var/lib/ghc/package.conf.d --prefix=/usr --libdir=/usr/lib/haskell-packages/ghc/lib --libexecdir=/usr/lib --builddir=dist-ghc --ghc-option=-optl-Wl\,-z\,relro --haddockdir=/usr/lib/ghc-doc/haddock/hinotify-0.3.9/ --datasubdir=hinotify --htmldir=/usr/share/doc/libghc-hinotify-doc/html/ --enable-library-profiling
Configuring hinotify-0.3.9...
hlibrary.setup: Encountered missing dependencies:
async >=1.0 && <2.2
/usr/share/cdbs/1/class/hlibrary.mk:142: recipe for target 'configure-ghc-stamp' failed
make: *** [configure-ghc-stamp] Error 1