dmd: failed to launch executable

[John Colvin via Digitalmars-d]

On Saturday, 19 September 2015 at 16:44:38 UTC, Rinzler wrote:
>> Quick point about paths and so on: if you don't understand 
>> what's going on, or have just made a change and want to be 
>> sure whether it worked, always open a new terminal session and 
>> try again. There are caches that can need emptying, 
>> environment variables that get inadvertently set etc.
>> I can't count the number of times I've been convinced 
>> somethings completely broken only to start a new terminal and 
>> find it all makes perfect sense again.
>>
>> Totally simple, obvious advice, I know, but nonetheless always 
>> worth repeating.
>
> Thanks for the advice.
>
> By the way, do you know a clean way to manage the installation 
> and eventually the uninstallation of dmd, and all libraries 
> related to D, etc, so that I don't have anymore these kind of 
> problems?

Compilers and tools: If possible let homebrew manage everything. 
If not feasible, use a separate folder for manually installed 
tools, don't let them get confused with installations from 
installers, package managers or system tools.

Libraries: let dub handle them, if possible. If not possible, see 
above.