<div dir="ltr">agreed, containers needs some careful custodianship because of its inclusion in ghc's shipping library set, and the extent to which its used across all known haskell code bases</div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Apr 3, 2016 at 10:28 PM, Phil Ruffwind <span dir="ltr"><<a href="mailto:rf@rufflewind.com" target="_blank">rf@rufflewind.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div style="font-size:12.48px">Correct me if I'm wrong: my understanding of how Cabal currently works is that if containers becomes a meta-package for other packages (say, containers-map and containers-seq), then users of the package would have to explicitly specify containers-map and containers-seq in the .cabal file. Additionally, to provide compatibility with older versions, there would need to be some sort of conditional logic too. This wouldn't be easy to automate, since one also needs to convert the version bound for containers into corresponding version bounds for the subpackages.</div><div style="font-size:12.48px"><br></div><span style="font-size:12.48px">Hence, I think </span><span style="font-size:12.48px">unless there is a way to make it 100% compatible with downstream splitting </span><span style="font-size:12.48px">the package is probably not a good idea, given that </span><span style="font-size:12.48px">containers is such a fundamental package in the ecosystem. Looking at <a href="http://packdeps.haskellers.com/reverse" target="_blank">http://packdeps.haskellers.com/reverse</a> , there are about 3000 packages downstream that depend on it (one of highest among the list).</span></div>
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