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Editorial Team
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Asked: 2026-06-11T13:45:42+00:00

When installing Timeplot in RHEL 6 using the following command cabal install timeplot I

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When installing Timeplot in RHEL 6 using the following command

cabal install timeplot

I get the following error:

Data/Array/IArray.hs:1:14: Unsupported extension: Trustworthy
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1 Answer

  1. Editorial Team

    To install timeplot I needed to install the haskell-platform and cairo-devel package (from EPEL) with

    sudo yum install haskell-platform cairo-devel

    Then install gtk2hs-buildtools

    cabal install gtk2hs-buildtools

    Open a new terminal at this point to get the new $PATH that includes $HOME/.cabal/bin

    You many need to manually install strptime-1.0.6, as strptime-1.0.7 gave me the following error

    building strptime-1.0.7...

Data/Time/Parse.hsc:22:18:
    Could not find module `Foreign.ForeignPtr.Unsafe':
      Use -v to see a list of the files searched for.

    Install strptime-1.0.6 with

    cabal install strptime-1.0.6

    Then install timeplot

    cabal install timeplot
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