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== What we worked on ==
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* [http://hackage.haskell.org/package/judy-0.2.1 judy]
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** Tutorials [http://donsbot.wordpress.com/2009/09/26/very-fast-scalable-mutable-maps-and-hashes-for-haskell/ 1] and [http://donsbot.wordpress.com/2009/09/27/fast-mutable-collections-for-haskell-more-benchmarks/ 2].
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** Brenda: Judy-like Haskell implementation. (not yet posted)
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* [http://hackage.haskell.org/package/criterion-0.1 Testing and using criterion]
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* Patches to HDBC and HDBC-sqlite3 to support multi-query execution to make [http://hackage.haskell.org/package/dbmigrations the dbmigrations package] work.
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* A [http://hackage.haskell.org/package/vty-ui widget library for VTY].
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* A potential new [http://patch-tag.com/r/TomMD/network/ network] library got started. Several aspects of design were discussed.
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* Reworking of [http://patch-tag.com/r/wchogg/crypto Crypto] has started, which involves replacing all [Octet] based digests and ciphers with ByteString equivalents in addition to normalizing the APIs.
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* A [http://patch-tag.com/r/kwallmar/hunit_gui/home GUI for HUnit]. It's currently feature-low, but functional. It also successfully runs its own tests.
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* Simplifed replacement for HLADSPA. Not yet posted.
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* [http://hackage.haskell.org/package/extcore extcore] and [http://hackage.haskell.org/package/linkcore linkcore], tools for manipulating GHC External Core.
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* [http://darcs.net/] Performance tuning for both mainline darcs and on the Google Summer of Code branch created by Petr Rockai. The new version is much faster at recording many small files.
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* A ByteString backed version of System.FilePath to help Darcs internally when manipulating thousands of FilePaths.
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== Proposed Projects for HacPDX ==
== Proposed Projects for HacPDX ==
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Projects you intend to tackle.
{| class="wikitable"
{| class="wikitable"
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| jmelesky
| jmelesky
|-
|-
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| HUnit
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| [http://patch-tag.com/r/hunit_gui/home GUI]. Maybe also text UI that isn't horrible
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| KimWallmark
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|-
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| [http://hackage.haskell.org/package/judy judy]
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| Fast, mutable collection types [http://donsbot.wordpress.com/2009/09/26/very-fast-scalable-mutable-maps-and-hashes-for-haskell/ report]
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| dons
|}
|}
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== Additional Project Suggestions ==
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Projects you'd consider, but depends on the interest of other attendees.
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{| class="wikitable
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! Project
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! Task Description
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|-
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|Crypto Part I
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|Fix up the crypto library - use bytestring, fold in pureMD5/SHA/hecc, provide a new API
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|-
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|PNG
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|Work on Bart Massey's pure-Haskell PNG reading/writing library. Lots to do here.
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|-
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|ParseArgs
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|Clean up and extend a bit Bart Massey's [http://hackage.haskell.org/package/parseargs parseargs] package.
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|-
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|TCP Service
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|Extract and package the SMTP-style TCP server bits from Bart Massey's [http://wiki.cs.pdx.edu/forge/imcs.html MiniChess] server.
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|-
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|sqlite open_v2()
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|Add full support for SQlite's open_v2() call to the [http://hackage.haskell.org/package/sqlite sqlite] package.
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|-
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|HaRe
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|Get it compiling under ghc 6.10; cabalize it.
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|-
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|plugins
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|Tests and examples seem to fail with linking errors on the latest Haskell Platform.
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|-
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|wxHaskell
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|Get this to install on Arch Linux.
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|-
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| [[Kernel Modules]]
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| Finish porting a Linux driver to Haskell (mostly means working on the c2hs bindings)
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|-
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| [http://github.com/enolan/whiteout Whiteout]
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|I - Echo Nolan - have been working on a BitTorrent client library. It uses fun things like iteratees and STM. If anyone is interested in hearing about/working on it, I'm more than happy to give the guided tour.
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|
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|-
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| Lambdabot
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|Everyone's favorite Haskell IRC bot.
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|-
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|}
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==Crypto 5.0 notes==
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See the patch-tag.com crypto repository files Data/Digest.hs and Data/Cipher.hs for proposed [http://patch-tag.com/r/crypto/snapshot/current/content/pretty/Data/Digest.hs Digest] and [http://patch-tag.com/r/crypto/snapshot/current/content/pretty/Data/Cipher.hs Cipher] typeclasses.
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This would allow digests to be called with a simple "hash" function so long as they have an instance:
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<haskell>
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newtype SHA1 = SHA1 (Word32, Word32, Word32, Word32, Word32)
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instance Digest SHA1 SHA1PartialCtx where
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--Code goes here...
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</haskell>
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And similarly for block/stream ciphers and RNGs.
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Also, slurp up the various other crypto libs on hackage.
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===Other todos===
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* Add website and darcs repo to Crypto.cabal.
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* Use test-framework.
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* Don't build tests by default - use a flag.
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* Is dominic.steinitz@blueyonder.co.uk still the correct contact email? If not, change it in CryptoHomePage.html
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* Does the readme *really* have to be in TeX?
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* Get a real bugtracker set up? code.haskell.org gives out trac hosting.
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* Holy crap that is a lot of warnings.
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* QuickCheck 2?
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* Echo hates Darcs with a passion.
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== Contour Plotting ==
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Greg is working on a plotting library at [http://people.oregonstate.edu/~benisong/finite-state-machine/ this repository].

Revision as of 06:05, 30 September 2009

Contents

1 What we worked on

  • judy
    • Tutorials 1 and 2.
    • Brenda: Judy-like Haskell implementation. (not yet posted)
  • Testing and using criterion
  • Patches to HDBC and HDBC-sqlite3 to support multi-query execution to make the dbmigrations package work.
  • A widget library for VTY.
  • A potential new network library got started. Several aspects of design were discussed.
  • Reworking of Crypto has started, which involves replacing all [Octet] based digests and ciphers with ByteString equivalents in addition to normalizing the APIs.
  • A GUI for HUnit. It's currently feature-low, but functional. It also successfully runs its own tests.
  • Simplifed replacement for HLADSPA. Not yet posted.
  • extcore and linkcore, tools for manipulating GHC External Core.
  • [1] Performance tuning for both mainline darcs and on the Google Summer of Code branch created by Petr Rockai. The new version is much faster at recording many small files.
  • A ByteString backed version of System.FilePath to help Darcs internally when manipulating thousands of FilePaths.

2 Proposed Projects for HacPDX

Projects you intend to tackle.

Project Task Description Participants
Network APIs Investigate and test new APIs for potentially replacing network, network-bytestring, and network-fancy TomMD
HPDF Additional hacking and c bindings jmelesky
HUnit GUI. Maybe also text UI that isn't horrible KimWallmark
judy Fast, mutable collection types report dons

3 Additional Project Suggestions

Projects you'd consider, but depends on the interest of other attendees.

Project Task Description
Crypto Part I Fix up the crypto library - use bytestring, fold in pureMD5/SHA/hecc, provide a new API
PNG Work on Bart Massey's pure-Haskell PNG reading/writing library. Lots to do here.
ParseArgs Clean up and extend a bit Bart Massey's parseargs package.
TCP Service Extract and package the SMTP-style TCP server bits from Bart Massey's MiniChess server.
sqlite open_v2() Add full support for SQlite's open_v2() call to the sqlite package.
HaRe Get it compiling under ghc 6.10; cabalize it.
plugins Tests and examples seem to fail with linking errors on the latest Haskell Platform.
wxHaskell Get this to install on Arch Linux.
Kernel Modules Finish porting a Linux driver to Haskell (mostly means working on the c2hs bindings)
Whiteout I - Echo Nolan - have been working on a BitTorrent client library. It uses fun things like iteratees and STM. If anyone is interested in hearing about/working on it, I'm more than happy to give the guided tour.
Lambdabot Everyone's favorite Haskell IRC bot.

4 Crypto 5.0 notes

See the patch-tag.com crypto repository files Data/Digest.hs and Data/Cipher.hs for proposed Digest and Cipher typeclasses.

This would allow digests to be called with a simple "hash" function so long as they have an instance: 

newtype SHA1 = SHA1 (Word32, Word32, Word32, Word32, Word32)
instance Digest SHA1 SHA1PartialCtx where
  --Code goes here...

And similarly for block/stream ciphers and RNGs. Also, slurp up the various other crypto libs on hackage.

4.1 Other todos

  • Add website and darcs repo to Crypto.cabal.
  • Use test-framework.
  • Don't build tests by default - use a flag.
  • Is dominic.steinitz@blueyonder.co.uk still the correct contact email? If not, change it in CryptoHomePage.html
  • Does the readme *really* have to be in TeX?
  • Get a real bugtracker set up? code.haskell.org gives out trac hosting.
  • Holy crap that is a lot of warnings.
  • QuickCheck 2?
  • Echo hates Darcs with a passion.

5 Contour Plotting

Greg is working on a plotting library at this repository.

Retrieved from "http://www.haskell.org/haskellwiki/HacPDX/Projects"