Bug#876525: threadscope FTBSF on non-x86: #error Unknown mingw32 arch

[Adrian Bunk]

Source: threadscope
Version: 0.2.9-1
Severity: serious

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

...
touch configure-ghc-stamp
. /usr/share/haskell-devscripts/Dh_Haskell.sh && \
build_recipe
Running debian/hlibrary.setup build --builddir=dist-ghc
Building threadscope-0.2.9...
Preprocessing executable 'threadscope' for threadscope-0.2.9...

In file included from ./GUI/GtkExtras.hs:24:0: error: 

include/windows_cconv.h:9:3: error:
     error: #error Unknown mingw32 arch
     # error Unknown mingw32 arch
       ^~~~~
`gcc' failed in phase `C pre-processor'. (Exit code: 1)
/usr/share/cdbs/1/class/hlibrary.mk:147: recipe for target 'build-ghc-stamp' failed
make: *** [build-ghc-stamp] Error 1