Bug#880879: haskell-dpkg FTBFS: hlibrary.setup: parsing output of pkg-config --modversion failed

[Adrian Bunk]

Source: haskell-dpkg
Version: 0.0.3-10
Severity: serious
Tags: buster sid

Some recent change in unstable makes haskell-dpkg FTBFS:

https://tests.reproducible-builds.org/debian/history/haskell-dpkg.html
https://tests.reproducible-builds.org/debian/rb-pkg/unstable/amd64/haskell-dpkg.html

...
. /usr/share/haskell-devscripts/Dh_Haskell.sh && \
make_setup_recipe
Running ghc --make Setup.hs -o debian/hlibrary.setup
[1 of 1] Compiling Main             ( Setup.hs, 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/dpkg-0.0.3/ --datasubdir=dpkg --htmldir=/usr/share/doc/libghc-dpkg-doc/html/ --enable-library-profiling --disable-shared
Configuring dpkg-0.0.3...
Dependency base ==4.*: using base-4.9.1.0
Dependency bindings-DSL >=1.0.7 && <1.1: using bindings-DSL-1.0.23
Dependency bytestring -any: using bytestring-0.10.8.1
Dependency monad-loops -any: using monad-loops-0.4.3
hlibrary.setup: parsing output of pkg-config --modversion failed
/usr/share/cdbs/1/class/hlibrary.mk:142: recipe for target 'configure-ghc-stamp' failed
make: *** [configure-ghc-stamp] Error 1