Bug#1000067: haskell-regex-pcre: depends on obsolete pcre3 library

[pdr at pdr.cx]

On Wednesday, 12 February 2025 at 10:54 PM, pdr at pdr.cx <pdr at pdr.cx> wrote:
> On Friday, 31 January 2025 at 11:40 PM, Bastian Germann bage at debian.org wrote:
> > If you want to have haskell-regex migrating to testing, you should get rid of the haskell-regex-pcre
> > dependency or fix this bug.
> 
> I should have some time this week to look at this. My plan is to:
> 
> * contact the author/maintainer of haskell-regex-pcre to see what the status is (there is an open github issue from years ago)
> * if the author is no longer interested in the project, fork a new haskell-regex-pcre2 package depending on libpcre2
> * upload the new package to Hackage (the Haskell library repo)
> * package it for Debian
> * Work with upstream to make haskell-regex depend on haskell-regex-pcre2 instead (probably requires new major version as this would likely constitute an API change)

I have so far:

* written a replacement haskell-regex-pcre2 that works with libpcre2 and uploaded it to Hackage and sent a PR to get it into Stackage
* Packaged haskell-regex-pcre2 for Debian and patched haskell-regex for Debian only (since upstream uses a built-in variant by default anyway) and submitted an MR to the Debian Haskell Team

Any other packages that depend on haskell-regex-pcre should be able to port to haskell-regex-pcre2 unless they are heavily relying on options or semantics that changed from libpcre3.