diff --git a/hp/haskell-platform-7.4.cabal b/hp/haskell-platform-7.4.cabal
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+name:                haskell-platform
+version:             2012.4.0.0
+homepage:            http://haskell.org/platform
+license:             BSD3
+license-file:        LICENSE
+author:              libraries@haskell.org
+maintainer:          haskell-platform@projects.haskell.org
+category:            System
+synopsis:            The Haskell Platform
+description:
+    The Haskell Platform (HP) is the blessed set of libraries and tools on
+    which to build further Haskell libraries and applications. It is
+    intended to provide a comprehensive, stable, and quality tested base for
+    Haskell projects to work from.
+    .
+    This version specifies the following additional developer tools be
+    installed, for a system to be in full compliance:
+    .
+    * cabal-install
+    * alex
+    * happy
+    * haddock
+
+cabal-version:       >= 1.8
+build-type:          Custom
+tested-with:         GHC ==7.4.2
+
+flag include-ghc-depends
+  description: Include all the GHC provided packages in the dependencies
+  default:     False
+
+library
+  if flag(include-ghc-depends)
+    build-depends:
+      ghc                      ==7.4.2,
+
+      -- Core libraries: provided by every ghc installation
+      -- We don't include "non-API" packages here.
+      --                                        begin core packages
+      array                    ==0.4.0.0,
+      base                     ==4.5.1.0,
+      bytestring               ==0.9.2.1,
+      Cabal                    ==1.14.0,
+      containers               ==0.4.2.1,
+      deepseq                  ==1.3.0.0,
+      directory                ==1.1.0.2,
+      extensible-exceptions    ==0.1.1.4,
+      filepath                 ==1.3.0.0,
+      haskell2010              ==1.1.0.1,
+      haskell98                ==2.0.0.1,
+      hpc                      ==0.5.1.1,
+      old-locale               ==1.0.0.4,
+      old-time                 ==1.1.0.0,
+      pretty                   ==1.1.1.0,
+      process                  ==1.1.0.1,
+      template-haskell         ==2.7.0.0,
+      time                     ==1.4
+  if !os(windows)
+    build-depends:
+      unix                     ==2.5.1.1
+      --                                        end core packages
+  else
+    build-depends:
+      Win32                    ==2.2.2.0
+
+  build-depends:
+    -- Libraries in addition to what GHC provides:
+    -- Note: newer versions of cgi need monad-catchio.
+    --                                          begin platform packages
+    async                       ==2.0.1.3,
+    cgi                         ==3001.1.7.4,
+    fgl                         ==5.4.2.4,
+    GLUT                        ==2.1.2.1,
+    haskell-src                 ==1.0.1.5,
+    html                        ==1.0.1.2,
+    HTTP                        ==4000.2.5,
+    HUnit                       ==1.2.5.1,
+    mtl                         ==2.1.2,
+    network                     ==2.3.1.0,
+    OpenGL                      ==2.2.3.1,
+    parallel                    ==3.2.0.3,
+    parsec                      ==3.1.3,
+    QuickCheck                  ==2.5.1.1,
+    random                      ==1.0.1.1,
+    regex-base                  ==0.93.2,
+    regex-compat                ==0.95.1,
+    regex-posix                 ==0.95.2,
+    split                       ==0.2.1.1,
+    stm                         ==2.4,
+    syb                         ==0.3.7,
+    text                        ==0.11.2.3,
+    transformers                ==0.3.0.0,
+    vector                      ==0.10.0.1,
+    xhtml                       ==3000.2.1,
+    zlib                        ==0.5.4.0,
+
+    -- Libraries that are needed to support the above,
+    -- though are not officially part of the platform
+    primitive                   ==0.5.0.1
+
+  -- Depending on programs does not work, they are not registered
+  -- We list them to help distro packaging.
+  build-tools:
+    cabal-install               ==0.14.0,
+    alex                        ==3.0.2,
+    happy                       ==1.18.10
+    --                                          end platform packages
+    -- hscolour                 ==1.19   -- ???
+    -- haddock                  ==2.11.0 -- need to use the one shipped with ghc
+
+-- N.B.: The begin/end comment annotations are used to build the source
+-- installer: Packages that are part of the core are checked at build time.
+-- Source of packages that are part of the platform are included in the tarball.