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openSUSE:Leap:42.3:Update
ghc-ghc-heap-view
ghc-ghc-heap-view.spec
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File ghc-ghc-heap-view.spec of Package ghc-ghc-heap-view
# # spec file for package ghc-ghc-heap-view # # Copyright (c) 2016 SUSE LINUX GmbH, Nuernberg, Germany. # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed # upon. The license for this file, and modifications and additions to the # file, is the same license as for the pristine package itself (unless the # license for the pristine package is not an Open Source License, in which # case the license is the MIT License). An "Open Source License" is a # license that conforms to the Open Source Definition (Version 1.9) # published by the Open Source Initiative. # Please submit bugfixes or comments via http://bugs.opensuse.org/ # # This package cannot be compiled with profiling enabled. %global without_prof 1 %global pkg_name ghc-heap-view %bcond_with tests Name: ghc-%{pkg_name} Version: 0.5.7 Release: 0 Summary: Extract the heap representation of Haskell values and thunks License: BSD-3-Clause Group: Development/Languages/Other Url: https://hackage.haskell.org/package/%{pkg_name} Source0: https://hackage.haskell.org/package/%{pkg_name}-%{version}/%{pkg_name}-%{version}.tar.gz BuildRequires: ghc-Cabal-devel BuildRequires: ghc-binary-devel BuildRequires: ghc-bytestring-devel BuildRequires: ghc-containers-devel BuildRequires: ghc-ghc-devel BuildRequires: ghc-rpm-macros BuildRequires: ghc-template-haskell-devel BuildRequires: ghc-transformers-devel BuildRoot: %{_tmppath}/%{name}-%{version}-build %if %{with tests} BuildRequires: ghc-deepseq-devel %endif %description This library provides functions to introspect the Haskell heap, for example to investigate sharing and lazy evaluation. As this is tied to the internals of the compiler,it only works with specific versions. Currently, GHC 7.4 through 7.10 should be supported. 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. This package also provides a new GHCi-command, ':printHeap', which allows you to inspect the current heap representation of a value, including sharing and cyclic references. To enable the command, you need to load the included ghci script or add it to '~/.ghci', as explained by 'cabal install'. Once it is set up, you can do this: >> let value = "A Value" >> let x = (value, if head value == 'A' then value else "", cycle [True, False]) >> :printHeap x >let x1 = _bco > x21 = [] >in (x1,_bco,_bco) >> length (take 100 (show x)) `seq` return () -- evaluate everything >> :printHeap x >let x1 = "A Value" > x16 = True : False : x16 >in (x1,x1,x16) You can change the maximum recursion depth using ':setPrintHeapDepth': >> :setPrintHeapDepth 3 >> :printHeap x >let x1 = C# 'A' : ... : ... >in (x1,x1,True : ... : ...) If the view is impaired by blackholes (written '_bh'), running 'System.Mem.performGC' usually helps. The work on this package has been supported by the Deutsche Telekom Stiftung (<http://telekom-stiftung.de>). %package devel Summary: Haskell %{pkg_name} library development files Group: Development/Libraries/Other Requires: %{name} = %{version}-%{release} Requires: ghc-compiler = %{ghc_version} Requires(post): ghc-compiler = %{ghc_version} Requires(postun): ghc-compiler = %{ghc_version} %description devel This package provides the Haskell %{pkg_name} library development files. %prep %setup -q -n %{pkg_name}-%{version} %build %ghc_lib_build %install %ghc_lib_install %check %cabal_test %post devel %ghc_pkg_recache %postun devel %ghc_pkg_recache %files -f %{name}.files %defattr(-,root,root,-) %doc LICENSE %dir %{_datadir}/%{pkg_name}-%{version} %{_datadir}/%{pkg_name}-%{version}/ghci %files devel -f %{name}-devel.files %defattr(-,root,root,-) %changelog
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