On Sun, Jun 15, 2014 at 02:20:11 +0200, Leandro Lucarella via Digitalmars-d-announce wrote:
> I just wanted to point out that there might be more ethical licenses to achieve the same effect (allowing companies to build proprietary tools on top on DMDFE).

There's MPL which is source-file-based copyleft (rather than link-time
copyleft).

--Ben