[Issue 24604] New: Need CI task to build dmd, druntime & phobos with next edition semantics

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=24604

          Issue ID: 24604
           Summary: Need CI task to build dmd, druntime & phobos with next
                    edition semantics
           Product: D
           Version: D2
          Hardware: x86_64
                OS: Linux
            Status: NEW
          Severity: major
          Priority: P1
         Component: tools
          Assignee: nobody at puremagic.com
          Reporter: nick at geany.org

Now that there are some things in dmd for the next edition, we need a CI task
to check that dmd etc still build. That isn't being tested yet:
https://github.com/dlang/dmd/pull/16583#issuecomment-2167897992

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