Ao instalar o Haskell, a dependência não é satisfiable: ghc6 (6.12.1+)

Question

O que isso significa, não posso instalar o haskell? Eu acabei de atualizar para o Natty, essa é a razão?

Como você pode ver na captura de tela, recebo este problema no Centro de Software:

The following packages have unmet dependencies:

haskell-platform: Depends: ghc6 (< 6.12.1+) but 6.12.3-1ubuntu7 is to be installed
                  Depends: libghc6-cgi-dev (>= 3001.1.7.2) but 3001.1.7.2-1build1 is to be installed
                  Depends: libghc6-fgl-dev (< 5.4.2.2+) but 5.4.2.2-2build2 is to be installed
                  Depends: libghc6-glut-dev (< 2.1.2.1+) but 2.1.2.1-1build1 is to be installed
                  Depends: libghc6-haskell-src-dev (< 1.0.1.3+) but 1.0.1.3-2build1 is to be installed
                  Depends: libghc6-html-dev (< 1.0.1.2+) but 1.0.1.2-3build2 is to be installed
                  Depends: libghc6-hunit-dev (< 1.2.2.1+) but 1.2.2.1-2build2 is to be installed
                  Depends: libghc6-mtl-dev (< 1.1.0.2+) but 1.1.0.2-10build2 is to be installed
                  Depends: libghc6-network-dev (< 2.2.1.7+) but 2.2.1.7-1build2 is to be installed
                  Depends: libghc6-opengl-dev (< 2.2.3.0+) but 2.2.3.0-2build2 is to be installed
                  Depends: libghc6-parallel-dev (< 2.2.0.1+) but 2.2.0.1-1build1 is to be installed
                  Depends: libghc6-parsec2-dev (< 2.1.0.1+) but 2.1.0.1-2build2 is to be installed
                  Depends: libghc6-quickcheck2-dev (< 2.1.0.3+) but 2.1.0.3-1build2 is to be installed
                  Depends: libghc6-regex-base-dev (< 0.93.1+) but 0.93.1-8build1 is to be installed
                  Depends: libghc6-regex-compat-dev (< 0.92+) but 0.92-6build2 is to be installed
                  Depends: libghc6-regex-posix-dev (< 0.94.1+) but 0.94.1-2build1 is to be installed
                  Depends: libghc6-stm-dev (< 2.1.1.2+) but 2.1.1.2-5build2 is to be installed
                  Depends: libghc6-xhtml-dev (>= 3000.2.0.1) but 3000.2.0.1-6build2 is to be installed
                  Depends: libghc6-zlib-dev (< 0.5.2.0+) but 0.5.2.0-4build2 is to be installed
                  Depends: libghc6-http-dev (>= 40000009) but 40000009-2build1 is to be installed
                  Depends: libghc6-deepseq-dev (< 1.1.0.0+) but 1.1.0.0-2build1 is to be installed
                  Depends: alex (< 2.3.3+) but 2.3.3-1 is to be installed
                  Depends: happy (< 1.18.4-2+) but 1.18.4-2 is to be installed
                  Depends: haddock but it is a virtual package

    

Answer 1

Sim, isso é por causa de um bug introduzido no Natty; isto é Bug # 742052 .

Infelizmente não há muito que você possa fazer facilmente para contornar isso.

    

Answer 2

Existe uma solução alternativa para este problema:

Use vi e edite o arquivo /var/cache/apt/pkgcache.bin
Encontre a string 6.12.1+ e altere para 6.12.4+
Salve a alteração e sudo apt-get install haskell-platform ainda falhará ao chamar algum script de pós-instalação, mas parece útil.