Fellow generic programmers,<br><br>I finally managed to prepare a new release of SYB. Since this is a widely used library I decided to share a &quot;preview&quot; version here before putting it up on Hackage. There is nothing major in this version: basically, the testsuite was reintegrated and I added some basic generic producers. Please let me know if something goes wrong with this new version: <a href="http://code.haskell.org/syb/syb-0.2-rc1.tar.gz">http://code.haskell.org/syb/syb-0.2-rc1.tar.gz</a><br>

<br>The draft announcement follows:<br><br><blockquote style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;" class="gmail_quote">syb: Scrap Your Boilerplate!<br>================================================================================<br>

<br>Scrap Your Boilerplate (SYB) is a library for generic programming in Haskell. It <br>is supported in the GHC &gt;= 6.0 implementation of Haskell. Using this approach, <br>you can write generic functions such as traversal schemes (e.g., everywhere and <br>

everything), as well as generic read, generic show and generic equality (i.e., <br>gread, gshow, and geq). This approach is based on just a few primitives for <br>type-safe cast and processing constructor applications. <br>

<br>It was originally developed by Ralf Lämmel and Simon Peyton Jones. Since then, <br>many people have contributed with research relating to SYB or its applications. <br><br>More information is available on the webpage: <br>

<a href="http://www.cs.uu.nl/wiki/GenericProgramming/SYB">http://www.cs.uu.nl/wiki/GenericProgramming/SYB</a><br><br><br>What&#39;s new<br>----------<br><br>The biggest improvements from version 0.1 are:<br>  * The reintegration of the testsuite;<br>

  * The introduction of two new generic producers (&#39;empty&#39; and <br>    &#39;constrs&#39;). The former produces an empty value of a given datatype, while<br>    the latter produces a list of values of a datatype, each using a different<br>

    constructor.<br><br><br>Features<br>--------<br><br>* Easy generic programming with combinators<br><br>* GHC can derive Data and Typeable instances for your datatypes<br><br>* Comes with many useful generic functions<br>

<br><br>Requirements<br>------------<br><br>* GHC 6.10.1 or later<br>* Cabal 1.2.1 or later<br><br><br>Download<br>--------<br><br>With cabal-install:<br><br>  cabal install syb<br><br>Get the package:<br><br>  <a href="http://hackage.haskell.org/package/syb">http://hackage.haskell.org/package/syb</a><br>

<br>Get the source:<br><br>  darcs get <a href="http://code.haskell.org/syb/">http://code.haskell.org/syb/</a><br><br><br>Bugs &amp; Support<br>--------------<br><br>Please report issues or request features at the bug tracker:<br>

<br>  <a href="http://code.google.com/p/scrapyourboilerplate/issues/list">http://code.google.com/p/scrapyourboilerplate/issues/list</a><br><br>For discussion about the library with the authors, maintainers, and other<br>
interested persons use the mailing list:<br>
<br>  <a href="http://www.haskell.org/mailman/listinfo/generics">http://www.haskell.org/mailman/listinfo/generics</a><br></blockquote><br><br>Thanks,<br>Pedro<br>