On 07/06/11 14:03, Brandon Allbery wrote:
On Tue, Jun 7, 2011 at 07:34, Tim Docker<[email protected]> wrote:
do others go about testing their code with many hackage dependencies against
a new ghc? I would have expected that the first thing to do would be get the
We don't, for the most part; ghc is a quickly moving target and
usually has multiple type theory experiments going on in its code, and
it's best to avoid new versions until they stabilize and any core
dependents are updated. GHC announcements will often mention how
usable the release is expected to be for us non-type theorists.
Unless you're a ghc hacker, you shouldn't in general rush into a new
ghc version. (This isn't Linux. The bleeding edge is for type
theory, not geeks.)
I get your point, but it's not only type theory breakthroughs that are
in the "bleeding edge". There's significant runtime improvements also:
http://www.mail-archive.com/[email protected]/msg19780.html
(for certain bytestring usage patterns: >10x improvement in gc time, and
a third as much memory used!).
I was keen to try this out, but underestimated the effort in how much
manual tweaking I'd have to do to get all the dependencies of my code
working.
Perhaps it's best for me to take Simon's advice and wait for the 7.2
release.
Tim
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