require 'formula'

class CabalInstall < Formula
  homepage 'http://www.haskell.org/haskellwiki/Cabal-Install'
  url 'http://hackage.haskell.org/packages/archive/cabal-install/1.18.0.1/cabal-install-1.18.0.1.tar.gz'
  sha1 'ac403d580bd399d682e5d8f4fd8d6d07c03622d9'

  depends_on 'ghc'

  conflicts_with 'haskell-platform'

  def install
    # use a temporary package database instead of ~/.cabal or ~/.ghc
    pkg_db = "#{Dir.pwd}/package.conf.d"
    system 'ghc-pkg', 'init', pkg_db
    ENV['EXTRA_CONFIGURE_OPTS'] = "--package-db=#{pkg_db}"
    ENV['PREFIX'] = Dir.pwd
    inreplace 'bootstrap.sh', 'list --global',
      'list --global --no-user-package-db'

    system 'sh', 'bootstrap.sh'
    bin.install "bin/cabal"
    bash_completion.install 'bash-completion/cabal'
  end
end