[dmd-internals] DMD bootstrapping version requirements

[Walter Bright via dmd-internals]

On 2/17/2017 3:23 AM, Daniel Murphy wrote:
> That sounds reasonable.  But couldn't the same be achieved by just
> fixing the directory layout to match the package layout?  I thought we
> were planning that anyway.

There's also DMC++ to consider, which is built from the same code.

I'm not the only one to have this problem, it's been regularly causing trouble 
for people. The -mv switch solves it with no contortions required by the user. 
We should be dogfooding more recent compilers anyway in the builds, and gdc/ldc 
need to implement -mv (it's pretty trivial) whether or not other improvements 
are incorporated.