Tag: cabal

Hackage, Cabal and the Haskell Platform: The Second Year

~ Don Stewart ~ Leave a comment

The Haskell Implementors Workshop was held in Baltimore, Oct 1, 2010. Duncan Coutts from Well-Typed and I presented a status report on the Haskell distribution infrastructure:

You can read the slides as PDF here, or online:

The amount of freely available Haskell code has grown exponentially in the past
two years as Hackage and Cabal have come online. Managing millions of Haskell
code, partitioned thousands of interdependent packages is a serious engineering
challenge that has received little attention from the language research community.
Meanwhile, new adopters of Haskell struggle to deal with the sheer number of
libraries and tools now available.

One pragmatic approach to managing this web is the Haskell Platform (HP), a
project to build a blessed, comprehensive set of libraries meeting objective
quality control criteria, and in doing so make expert recommendations on which
packages to use. In its first six weeks of operation the HP had over forty
thousand downloads.

The challenge with such a project is to manage the many conflict constraints
for diversity, coverage, and quality when assembling the package set. This talk
will outline the state of the Haskell Platform, the technical approaches taken
to build it, and the roadmap ahead.

Popular Haskell Packages: Q2 2010 report

~ Don Stewart ~ 6 Comments

Here is some data on downloads of Haskell libraries and apps on Hackage, for the first half of 2010.

The Hackage dependency graph

Hackage is the central repository of open source Haskell libraries and tools. Once they install the Haskell Platform, users get more libraries from Hackage, via “cabal install”.

Headlines

May was the most popular month for Hackage ever, breaking 150k downloads in a single month for the first time.

The 2000th Haskell package was released on April 16.

Total downloads on Hackage since 2006 have passed 2.4 million, with 780 thousand downloads in 2010 so far (double the total from the same time in 2009).

Totals

Total cabal packages: 2182. (+ 208 in Q2).

Total contributing developers: 575 (42 new developers in Q2)

90 day moving average: 12 packages per day uploaded.

Total downloads from Hackage 2007-present: 2.42 million

Average monthly downloads in 2010: 130 thousand.

Top of the Pops

The top 15 most popular libraries in the first half of 2010 were:

  1. HTTP
  2. parsec (+1)
  3. zlib (-1)
  4. binary (+1)
  5. network (+2)
  6. utf8-string (-2)
  7. Cabal (+1)
  8. QuickCheck (-2)
  9. mtl (+1)
  10. haskell-src-exts (-1)
  11. regex-base
  12. deepseq (+6)
  13. ghc-paths (+2)
  14. hslogger (+6)
  15. regex-posix (-2)

Top 15 most popular applications in the first half of 2010:

  1. cabal-install
  2. xmonad
  3. haddock (+1)
  4. cpphs (-1)
  5. happy
  6. darcs (+1)
  7. alex (+1)
  8. hscolour (-2)
  9. pandoc
  10. hlint
  11. leksah
  12. xmobar
  13. yi
  14. hint
  15. agda

Honorable Mentions

  • The Galois xml library was more popular in the first half of 2010 than HaXml, dethroning HaXml for the first time.
  • text has made it into the top 30 libraries
  • HDBC continues to be the most popular database library
  • vector has almost surpassed array in downloads (array is part of the Haskell Platform though)
  • wxHaskell is still more popular than gtk2hs on Hackage,  though gtk2hs has almost caught up.

You can read all the 2010 data for your favorite packages, and ranked by 2010 popularity.

Top Libraries by Category

  • Networking: HTTP, network, network-bytestring, curl
  • Parsing: parsec, polyparse, attoparsec
  • Compression: zlib, zip-archive
  • Binary formats: binary, cereal
  • Text formats: utf8-string, text, dataenc
  • Markup: pandoc, xhtml, tagsoup, html
  • JSON: json
  • Atom/RSS: feed
  • XML: xml, HaXml, hexpat
  • Web services:  happstack, snap
  • GUIs: wxHaskell, gtk2hs
  • Graphics: SDL, cairo, gd
  • Templates: HStringTemplate
  • Testing: QuickCheck, HUnit, testpack, hpc
  • Control: mtl, transformers, monads-fd
  • Languages: haskell-src-exts, haskell-src, HJavaScript
  • Regexes: regex-{base,posix,compat,tdfa}, pcre-light
  • Logging: hslogger
  • Generics: uniplate, syb-with-class, syb
  • 3D: OpenGL
  • Edit history: haskeline
  • Concurrency and parallelism: parallel, stm
  • Databases: HDBC
  • Arrays: array, vector, hmatrix
  • Hashing: pureMD5, SHA
  • Data structures: containers, fingertree, dlist
  • Science:  statistics
  • Benchmarking: criterion
  • Storage: hs3

Is there anything else you see in the data?