require "formula"

class CabalInstall < Formula
  homepage "http://www.haskell.org/haskellwiki/Cabal-Install"
  url "http://hackage.haskell.org/package/cabal-install-1.20.0.3/cabal-install-1.20.0.3.tar.gz"
  sha1 "444448b0f704420e329e8fc1989b6743c1c8546d"
  revision 1

  bottle do
    cellar :any
    sha1 "3e14c600962c09a3bff687e66989766d236134d3" => :yosemite
    sha1 "12a7a0ed49eef251fb8454bf882187aa9f495e75" => :mavericks
    sha1 "c1c4d78116c9fb9cec8e021f074a7b2d78f13fd8" => :mountain_lion
    sha1 "1e201a29a5535edc30654402e407f985017ef518" => :lion
  end

  depends_on "ghc"

  fails_with :clang if MacOS.version < :mavericks # Same as ghc.rb

  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"

    # Avoid a nasty bug in Cabal by forcing the bootstrap script to pull a later version.
    # (q.v. https://github.com/haskell/cabal/issues/1740)
    inreplace "bootstrap.sh", 'CABAL_VER="1.20.0.0";', 'CABAL_VER="1.20.0.2";'

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

  test do
    system "#{bin}/cabal", "--config-file=#{testpath}/config", "info", "cabal"
  end
end