[Pkg-haskell-maintainers] Bug#578301: libghc6-type-level-dev: aliases slow down haddock index

[Joachim Breitner]

Hi,

Am Freitag, den 03.06.2011, 15:40 +0200 schrieb Tomáš Janoušek:
> On Fri, Jun 03, 2011 at 12:02:30AM +0200, Joachim Breitner wrote:
> > here on my machine and with ghc-7.0.3, things are reasonably fast. Can
> > you check whether it is still too slow for your, or whether maybe things
> > have improved with the new ghc version?
> 
> Things are very fast indeed, because the documentation for type-level isn't
> indexed. The reason for this is that:
> 
> $ dpkg -L libghc-type-level-dev | grep 'conf$'
> /var/lib/ghc-7.0.3/package.conf.d/type-level-0.2.4.conf
> $ grep haddock /var/lib/ghc-7.0.3/package.conf.d/type-level-0.2.4.conf
> haddock-interfaces: /usr/lib/ghc-7.0.3/haddock/type-level-0.2.4/type-level.haddock
> haddock-html: /usr/share/doc/libghc-type-level-doc/html/
> $ dpkg -L libghc-type-level-doc | grep 'haddock$'
> /usr/lib/ghc-7.0.2/haddock
> /usr/lib/ghc-7.0.2/haddock/type-level-0.2.4/type-level.haddock
> 
> Notice that the files that should be in /usr/lib/ghc-7.0.3 are in /usr/lib/ghc-7.0.2.

ah, ok. Yes, that is a regression introduced by the fact that we try to
re-use .haddock files across compatible ghc versions. The next ghc
package will put the files in a version-agnostic directory.

> If I modify /usr/lib/ghc-doc/gen_contents_index to replace the path for
> type-level, then it gets slow again (24 seconds vs. 2 seconds if type-level is
> ignored).

Ok, thanks for the check. Not sure what to do about it, though. Maybe
someone can profile the indexing and look for some low-hanging
optimization fruit. Tagging this as "help" to encourage that.

Greetings,
Joachim


-- 
Joachim "nomeata" Breitner
Debian Developer
  nomeata at debian.org | ICQ# 74513189 | GPG-Keyid: 4743206C
  JID: nomeata at joachim-breitner.de | http://people.debian.org/~nomeata
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: This is a digitally signed message part
URL: <http://lists.alioth.debian.org/pipermail/pkg-haskell-maintainers/attachments/20110603/54ce792f/attachment.pgp>