There are some changes, but most everything is backwards compatible. For example, the snapshot files we use for building Stack itself are compatible with both Stack 1.9 and master. The thing that's changing completely is the Stackage snapshot files, which will match the custom snapshot files.
The docs for all of this are available at https://github.com/commercialhaskell/stack/blob/master/doc/pantry.md On Thu, Apr 25, 2019, 7:28 AM Yuji Yamamoto <whosekitenever...@gmail.com> wrote: > I heard the file format of custom snapshot is going to change since Stack > 2. > Is the new format documented somewhere? > How can we migrate? > > 2019年4月25日(木) 12:36 Michael Snoyman <mich...@snoyman.com>: > >> I've published a blog post with plans for changes to Stackage and the >> release of Stack 2. There are some big changes in Stack 2, so I'd strongly >> encourage users to do some testing before release to see if any workflows >> have been significantly impacted. >> >> -- >> You received this message because you are subscribed to the Google Groups >> "haskell-stack" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to haskell-stack+unsubscr...@googlegroups.com. >> To post to this group, send email to haskell-stack@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/haskell-stack/CAKT9ecOPWeouGzWwoUZy%2Byi6_QNBVUM4DDrLYTY79d6eekx0pA%40mail.gmail.com >> <https://groups.google.com/d/msgid/haskell-stack/CAKT9ecOPWeouGzWwoUZy%2Byi6_QNBVUM4DDrLYTY79d6eekx0pA%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> For more options, visit https://groups.google.com/d/optout. >> > > > -- > 山本悠滋 > twitter: https://twitter.com/igrep > GitHub: https://github.com/igrep > GitLab: https://gitlab.com/igrep > Facebook: http://www.facebook.com/igrep > -- You received this message because you are subscribed to the Google Groups "haskell-stack" group. To unsubscribe from this group and stop receiving emails from it, send an email to haskell-stack+unsubscr...@googlegroups.com. To post to this group, send email to haskell-stack@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/haskell-stack/CAKT9ecM5fuosS10TJ2XXNAT7CGOSAkxq57Siwt7hyzxEq8f5-Q%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.