{
  "$type": "site.standard.document",
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  "path": "/t/using-different-versions-of-the-same-dependency-like-rust/14298#post_15",
  "publishedAt": "2026-06-25T09:10:40.000Z",
  "site": "https://discourse.haskell.org",
  "tags": [
    "[RFC] \"http-types\" breakage / additions / rework - #51 by fendor"
  ],
  "textContent": "jaror:\n\n> Imagined syntax:\n>\n>\n>       build-deps: base\n>                 , http-types ^>= 0.12.5 as old-http-types\n>                 , http-types ^>= 1.0.0  as new-http-types\n>\n>\n>\n>\n>     import \"old-http-types\" Network.HTTP.Types as Old\n>     import \"new-http-types\" Network.HTTP.Types as New\n>\n\nNot to climb on to a dead horse, but doesn’t backpack/mixins already make this possible? Or does it get disallowed because they’re the same underlying package…\n\n[Edit] seems it _is_ possible: [RFC] \"http-types\" breakage / additions / rework - #51 by fendor",
  "title": "Using different versions of the same dependency like Rust"
}