Bug#881820: pkg-haskell-tools build depends on libghc-concurrent-output-dev (< 1.8) but 1.9.2-1 is to be installed

[Adrian Bunk]

Source: pkg-haskell-tools
Version: 0.11.0
Severity: serious

The following packages have unmet dependencies:
 builddeps:pkg-haskell-tools : Depends: libghc-concurrent-output-dev (< 1.8) 
but 1.9.2-1 is to be installed