Rerouted (regenerated, verified). Same repository and tag, but GitHub now builds the zip with different bytes, so it no longer matches the SHA-1 package.elm-lang.org recorded. The Lamdera package server serves a copy recovered from https://github.com/miniBill/date-format-languages.

What we checked: Tag 1.0.0 is still on github.com/miniBill/date-format-languages; its commit e5210bec200b is from 2019-09-18 15:55 UTC, before the version was published (2019-09-18 15:58 UTC); elm.json is byte-identical to package.elm-lang.org's; the exposed modules match docs.json; the zip's SHA-1 is not the published one (GitHub's zip no longer comes out byte for byte the same), so the contents were checked instead.

The Lamdera compiler uses this copy and prints a one-line notice saying so. elm itself fails to download this version.

Details · package.elm-lang.org's zip: https://github.com/miniBill/date-format-languages/zipball/1.0.0/