https://issues.dlang.org/show_bug.cgi?id=15223

          Issue ID: 15223
           Summary: Error: don't know how to make
                    'src\core\sys\linux\unistd.d'
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: regression
          Priority: P1
         Component: druntime
          Assignee: nobody@puremagic.com
          Reporter: bugzilla@digitalmars.com

Because it was added to druntime but not to the druntime MANIFEST.

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