FreeBSD/amd64 registerised running

Chris Kuklewicz haskell at
Wed Apr 11 04:23:35 EDT 2007

Simon Marlow wrote:
> Chris Kuklewicz wrote:
>> Could the solution be to depend on a pure Haskell regex implementation
>> instead
>> of on a regex-posix / Posix.hsc and the system regex library?
> Yes, as I mentioned, ticket 1160
> ( is for replacing
> regex-posix with regex-tdfa, and that would fix this issue.
> However, Igloo just removed the regex packages from GHC's core package
> set, so we don't have the problem any more.
>> The regex-tdfa backend could be modified to work with the regex-base
>> in GHC 6.6
>> and then regex-compat could quickly be switched to use this instead of
>> regex-posix.
> It sounds like a good idea to switch regex-compat to depend on
> regex-tdfa anyway.

After I upgrade to 6.6.1 (using OS X on PPC) then I will make new versions of
regex-compat and regex-tdfa.  The thing I have to fix is that the current
"unstable" regex-tdfa depends on the "unstable" regex-base and I have to make a
new branch of regex-tdfa that works against the "stable" regex-base that 6.6 and
6.6.1 use.  Mainly this will be erasing code.

For 6.8 we can upgrade regex-base to whatever the latest version is then.
Current changes in regex-base are (1) use of 'fail' for error handling in
RegexMaker, (2) use of newtypes to make avoid Hugs seeing overlapping instances
in RegexContext (no more conditional compilation).


More information about the Glasgow-haskell-users mailing list