Bug#895376: frown FTBFS: Encountered missing dependencies: base <4.10

[Adrian Bunk]

Source: frown
Version: 0.6.2.3-5
Severity: serious

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

...
Configuring frown-0.6.2.3...
CallStack (from HasCallStack):
  die', called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:948:20 in Cabal-2.0.1.0:Distribution.Simple.Configure
  configureFinalizedPackage, called at libraries/Cabal/Cabal/Distribution/Simple/Configure.hs:470:12 in Cabal-2.0.1.0:Distribution.Simple.Configure
  configure, called at libraries/Cabal/Cabal/Distribution/Simple.hs:570:20 in Cabal-2.0.1.0:Distribution.Simple
  confHook, called at libraries/Cabal/Cabal/Distribution/Simple/UserHooks.hs:67:5 in Cabal-2.0.1.0:Distribution.Simple.UserHooks
  configureAction, called at libraries/Cabal/Cabal/Distribution/Simple.hs:174:19 in Cabal-2.0.1.0:Distribution.Simple
  defaultMainHelper, called at libraries/Cabal/Cabal/Distribution/Simple.hs:119:27 in Cabal-2.0.1.0:Distribution.Simple
  defaultMain, called at Setup.hs:11:8 in main:Main
hlibrary.setup: Encountered missing dependencies:
base <4.10
make: *** [/usr/share/cdbs/1/class/hlibrary.mk:142: configure-ghc-stamp] Error 1