script/ghc-pkg-clean

   1 #!/bin/sh -eux
   2
   3 # DESCRIPTION: unregister broken GHC packages.
   4 # Run this a few times to resolve dependency rot in installed packages.
   5 # ghc-pkg-clean -f cabal/dev/packages*.conf also works.
   6 packages=$(ghc-pkg check $* 2>&1 |
   7         grep problems |
   8         awk '{print $6}' |
   9         sed -e 's/:$//'
  10  )
  11 for p in $packages
  12  do
  13         echo unregistering $p
  14         ghc-pkg "$@" unregister $p
  15  done