Re: questions about head.hackage

Thanks Teo, that's exactly what I was looking for I'll keep in mind this number changes over time. @Andrea I think the intention is that the patches eventually get upstreamed to the libraries It's just a good measure point for me to do quantitative breakage analysis upon. On 23-07-2024 03:06, Teofil Camarasu wrote:

Hi Jappie,

There is a GHC grafana with some statistics. Unfortunately the relevant dashboards seem to be broken at present. Hopefully someone on this list could fix it. See: https://grafana.gitlab.haskell.org/d/7T7oEMlMz/head-hackage-performance?orgId=2&viewPanel=3 https://grafana.gitlab.haskell.org/d/7T7oEMlMz/head-hackage-performance?orgId=2&viewPanel=3

There's also https://grafana.gitlab.haskell.org/d/RHebDhq7z/head-hackage-residency-profiling?orgId=2&refresh=30m https://grafana.gitlab.haskell.org/d/RHebDhq7z/head-hackage-residency-profiling?orgId=2&refresh=30m, which is for residency information, but looking at the filters suggests that the peak amount of packages is around 900.

Cheers, Teo

On Tue, Jul 23, 2024 at 4:29 AM Andrea Bedini wrote:

On Tue, 23 Jul 2024, at 7:38 AM, jappie klooster wrote: > For the stability working group I'm trying to understand how many > packages head.hackage allows you to build. > Does anyone know the answer to this or have an idea how I can find out?

I don't have the numbers you are looking for but one data-point is that cabal-install itself (which has a reasonable number of dependencies) typically does not compile with a freshly released GHC. This forces to temporarily add head.hackage in CI when a new GHC releases.

IMHO, using head.hackage to test a source-distribution defeats the purposes of testing. We cannot (and should not) assume those building cabal's source distribution(s) are using it, and therefore `cabal install cabal-install` will end up succeeding in our CI and failing for everybody else.

My 2c, Andrea

-- Andrea Bedini https://www.andreabedini.com _______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs

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