Compiling D inside of a D program

[Mineko]

On Saturday, 21 December 2013 at 10:00:10 UTC, Kelet wrote:
> On Saturday, 21 December 2013 at 08:55:04 UTC, Mineko wrote:
>> This is a fairly basic question but I can't find any good 
>> answers, so I'm asking..
>>
>> Anyways, I want to be able to invoke the D compiler, whichever 
>> that might be from inside of a D program, so I can say, 
>> compile a D script on-the-fly in some game, it's just an idea 
>> though.
>>
>> To be even more to the point, how can I invoke the D compiler 
>> inside of a D program, also, do I need to bundle said D 
>> compiler with my program or does D have some compilation 
>> feature inside of an already compiled program (Which I doubt)?
>
> Hi, I was also interested in this topic. My research suggests
> that there is no easy or safe way to do this at the moment, as
> thedeemon suggests. Although I think it's worth offering a
> possible alternative: using a scripting language binding like
> LuaD[1], DerelictLua[2], or pyd[3]. From here, you can expose
> some functions/variables between them, and solve a lot of the
> same problems.
>
> That being said, I think it would be useful to have something
> like JavaCompiler[4]. It's not an optimal solution, but combined
> with a minimal compiler package it could help a lot.
>
> As far as I know, you need to ask permission to distribute DMD
> with your application, so it may be safer to include GDC or LDC
> if you want to go this route. Or ask Walter, of course.
>
> [1]: https://github.com/JakobOvrum/LuaD
> [2]: https://github.com/DerelictOrg/DerelictLua
> [3]: https://bitbucket.org/ariovistus/pyd
> [4]:
> http://docs.oracle.com/javase/7/docs/api/javax/tools/JavaCompiler.html
>
> Regards,
> Kelet

Would it be legal to have my program automatically download some 
dmd binary, that way I could always keep it up to date? Given 
Walter here doesn't absolutely forbid my program does that.