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"haskell-free" versions published in Ubuntu

Groovy (5.1.3-1build1): universe/haskell
Focal (5.1.1-1build1): universe/haskell
Bionic (4.12.4-3build4): universe/haskell
Xenial (4.12.1-2build1): universe/haskell
Trusty (4.2-1build3): universe/haskell
Precise (2.0.3-1): universe/haskell