bytestring-builder: The new bytestring builder, packaged outside of GHC

[ bsd3, data, library ] [ Propose Tags ]

This is the bytestring builder that is debuting in bytestring-, which should be shipping with GHC 7.8, probably late in 2013. This builder has several nice simplifications and improvements, and more out-of-box functionality than the older blaze-builder.

Note that this package detects which version of bytestring you are compiling against, and if you are compiling against bytestring-0.10.4 or later, will be an empty package.

This package lets the new interface and implementation be used with most older compilers without upgrading bytestring, which can be rather problematic. In conjunction with blaze-builder-0.4 or later, which offers an implementation of blaze-builder in terms of bytestring-builder, this should let most people try the new interface and implementation without causing undue compatibility problems with packages that depend on blaze-builder.

GHC 7.6 did debut an almost identical interface and implementation, but with slightly different module names and organization. Trying to re-export/rename the builder provided with 7.6 did not turn out to be very practical, because this interface includes new functions that rely on Builder internals, which are not exported in 7.6. Furthermore, these module names should be deprecated in 7.10.


[Last Documentation]

  • Data
    • ByteString
      • Data.ByteString.Builder
        • Data.ByteString.Builder.Extra
        • Data.ByteString.Builder.Internal
        • Data.ByteString.Builder.Prim
          • Data.ByteString.Builder.Prim.Internal
      • Data.ByteString.Short
        • Data.ByteString.Short.Internal


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Change log
Dependencies base (>=4.2 && <5), bytestring (>=0.9 && <0.10.2 || >=0.10.4), deepseq [details]
License BSD-3-Clause
Copyright (c) 2010 Jasper Van der Jeugt (c) 2010-2013 Simon Meier (c) 2012-2013 Duncan Coutts
Author Simon Meier, Jasper Van der Jeugt, Duncan Coutts
Maintainer Leon P Smith <>
Category Data
Source repo head: git clone
this: git clone v0.
Uploaded by ryanglscott at 2018-09-25T12:58:13Z
Distributions LTSHaskell:, NixOS:, Stackage:
Reverse Dependencies 46 direct, 14603 indirect [details]
Downloads 91145 total (214 in the last 30 days)
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Status Docs not available [build log]
Last success reported on 2018-09-25 [all 3 reports]