[Issue 18650] New: DMD shouldn't include all unittests with -deps

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18650

          Issue ID: 18650
           Summary: DMD shouldn't include all unittests with -deps
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: dmd
          Assignee: nobody at puremagic.com
          Reporter: greensunny12 at gmail.com

See https://github.com/dlang/phobos/pull/6159#issuecomment-364849456 for a
longer discussion.

Short summary. With -deps ALL unittest are included which is pretty bad because

- it has severe impacts on the build-times. A quote: "I like regex! (Too bad
importing std.regex increases compiletime by 12 seconds in release builds...)"

- it limits what Phobos can do with its build scripts (we can't introduce
StdUnittest or similar versions)

- it will cause problems with -dip1000 as all DIP1000 unittests need to be
versioned out until then 


Related discussion on the NG:
https://forum.dlang.org/post/mailman.1033.1521062556.3374.digitalmars-d@puremagic.com

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