Category Archives: Weekly News

Weekly News

SG: Small OpenGL geometry library for vectors and collision detection

SG is a small geometry library by Neil Brown for dealing with vectors, points, lines, simple shapes, and their various intersection tests written in Haskell. It is now available in AUR. You can try it out with the sgdemo app.

Here’s a video exercising the library.

On Arch Linux, you can get it with:

$ yaourt sgdemo

Everywhere else, with:

$ cabal install sgdemo

Arch Haskell News: Mar 14 2009

A regular update of Haskell in Arch Linux

Hackage now has 1122 Haskell packages, of which 974 have been natively packaged for Arch in AUR. That’s 12 new packages this week, and lots of updates as well.

Notable releases this week

Here they all are, broken down by category, so you can get a sense for what’s new in your area of interest:

Codec

Compilers

Concurrency

Control

Cryptography

Data

Devel

Graphics

  • haskell-ftgl-1.2: Portable TrueType font rendering for OpenGL using the Freetype2 library

Gui

Language

System

Testing

Text

Web

Xml

The Arch Haskell Team maintains the Haskell toolchain on Arch Linux. You can join us in #arch-haskell on freenode.org, or on the mailing list.

Arch Haskell News: Mar 8 2009

A regular update of Haskell in Arch Linux

Arch now has 962 Haskell packages in AUR. That’s 17 new packages this week, and lots of updates as well.

Notable releases this week

Here they all are, broken down by category, so you can get a sense for what’s new in your area of interest:

Algorithm

Codec

Compilers

Concurrency

Control

Cryptography

Data

Database

Devel

Distributed Systems

Graphics

Network

System

Testing

Text

Web

Xml

The Arch Haskell Team maintains the Haskell toolchain on Arch Linux. You can join us in #arch-haskell on freenode.org, or on the mailing list.

Arch Haskell News: Feb 28 2009

A regular update of Haskell in Arch Linux

Arch now has 945 Haskell packages in AUR. That’s an increase of 11 new packages this week. Well done everyone!

Cryptography

Data

Database

Devel

  • c2hs-0.16.0: C->Haskell FFI tool that gives some cross-language type safety
  • cabal2arch-0.5: Create Arch Linux packages from Cabal packages
  • hackage2hwn-0.5: Convert Hackage RSS feeds to wiki format for publishing on Haskell.org

Graphics

Gui

Math

System

Testing

Text

The Arch Haskell Team maintains the Haskell toolchain on Arch Linux. You can join us in #arch-haskell on freenode.org, or on the mailing list.

Arch Haskell News: Feb 21 2009

A regular update of Haskell in Arch Linux

Arch now has 934 Haskell packages in AUR.

That’s an increase of 8 new packages in the last 4 days. Well done everyone!

Noteworthy updates

The following packages, by category, were released or updated this week.

Concurrency

Control

Cryptography

Data

Database

Devel

Gui

Graphics

Network

System

Web

The Arch Haskell Team maintains the Haskell toolchain on Arch Linux. You can join us in #arch-haskell on freenode.org, or on the mailing list.

Arch Haskell News: Feb 16 2009

A regular update of Haskell in Arch Linux

Arch now has 926 Haskell packages in AUR.

That’s an increase of 27 new packages in the last 8 days, or 3.38 new Haskell apps a day. Well done everyone!

Noteworthy updates

Installing Packages from AUR

To install AUR packages, we recommend yaourt, as in:

yaourt --noconfirm  --lightbg --aur -S haskell-haha

You may want to alias that command line. Here’s an example from this week’s releases:

The reason to use yaourt over cabal-install is that AUR packages correctly resolve all versions and, more importantly, C library and other system dependencies. Packages will also be pulled from the binary releases in [extra] and [community] where available, saving you build times.

New and Updated Packages

We now present package info sorted by category — let us know if this helps!

Algorithm

Codec

Compilers

Control

Cryptography

Data

Database

HSQL

HDBC

HaskellDB

Devel

Graphics

Gui

Language

Math

Network

System

Text

Web

  • haskell-hsp-0.4.5: Haskell Server Pages is a library for writing dynamic server-side web pages.

The Arch Haskell Team maintains the Haskell toolchain on Arch Linux. You can join us in #arch-haskell on freenode.org, or on the mailing list.

haskelldb: high level, type safe database queries for Haskell

The venerable haskelldb high level database interface for Haskell is now packaged up for Arch.

HaskellDB is a combinator library for expressing queries and other operations on relational databases in a type safe and declarative way. All the queries and operations are completely expressed within Haskell, no embedded (SQL) commands are needed.

The code base is around a decade now, and quite mature, but it has only recently been brought into the cabal and hackage world, making it trivial to package up and distribute. You can find all the packages here:

This release of haskelldb is layered over medium-level database interface suite, hdbc., so it can reuse the hdbc backends. The layers of Haskell database libs packaged up looks something like:

  1. High level: haskelldb, Takusen
  2. “Normal” level: HDBC, hsql
  3. Low level: sqlite, anydbm, hsSqlite3, PostgreSQL, BerkeleyDB

Low level ones typically just wrap the C interfaces underneath, providing few new safety guarantees. Medium level ones generally present a “sensible” Haskell API to the exposed db libraries, while the high level ones attempt to abstract out significant safety or productivity by embedding concepts deeper into the language.

Different libraries support different C backends, I’ll attempt to break that down here:

mysql postgres sqlite odbc oracle notes
hdbc Documented in RWH
haskelldb
High level
takusen Chooses backend(s) via compile time flag
hsql ? ? Less active?

Also of note is haskell-couchdb , and even haskell-hs3, for a different storage needs.

Finally, if you want to step away from calling out  to C altogether, and go for something purely in Haskell, there’s haskell-tcache, a transactional cache with configurable persistence in 100% Haskell using transactional memory.