[Issue 18427] New: `Symbol FOO is not visible because it is privately imported` => compiler should show how to import it

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18427

          Issue ID: 18427
           Summary: `Symbol FOO is not visible because it is privately
                    imported` => compiler should show how to import it
           Product: D
           Version: D2
          Hardware: x86
                OS: Mac OS X
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: timothee.cour2 at gmail.com

for `Symbol FOO is not visible because it is privately imported` : 
the compiler already knows where the symbol was defined; it should show it in
error message to make it easier for user to fix.

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