ghc-heap-view: Extract the heap representation of Haskell values and thunks

[ bsd3, debug, ghc, library ] [ Propose Tags ]
Versions 0.1, 0.2, 0.3,,,,,,,, 0.5,, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.5.6, 0.5.7, 0.5.8, 0.5.9, 0.5.10
Dependencies base (==4.5.*), ghc [details]
License BSD-3-Clause
Copyright 2012 Joachim Breitner
Author Joachim Breitner, Dennis Felsing
Maintainer Joachim Breitner <>
Category Debug, GHC
Source repo head: darcs get
Uploaded by JoachimBreitner at Thu Sep 13 11:52:42 UTC 2012
Distributions NixOS:0.5.10, openSUSE:0.5.10
Downloads 8591 total (95 in the last 30 days)
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Status Docs not available [build log]
All reported builds failed as of 2016-12-24 [all 6 reports]
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This library provides functions to introspect the Haskell heap, for example to investigate sharing and lazy evaluation.

It has been inspired by (and taken code from) the vacuum package and the GHCi debugger, but also allows to investiage thunks and other closures.

The work on this package has been supported by the Deutsche Telekom Stiftung (


  • GHC
    • GHC.HeapView



The used GHC supports Any as an argument to foreign prim functions (GHC ticket #5931)


Use -f <flag> to enable a flag, or -f -<flag> to disable that flag. More info


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