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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Could you write a BSD like os in ADA?
Date: Mon, 9 May 2016 15:14:27 -0500
Organization: JSA Research & Innovation
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:ng9l30$rc9$1@gioia.aioe.org...
> On 03/05/2016 00:51, endlessboomcapitalism@gmail.com wrote:
>> Like with all we know now......rewrite in ada?
>
> What for? A poorly designed OS remains that in any language.

That's unfair: BSD was a well-designed OS when it was designed (mid-1970s). 
Consider CP/M-80 (to take one example) for an example of a poorly designed 
(assuming it was designed at all) OS. Rewriting that in Ada (or anything) 
would be bizarre.

But your real point is that it is 2016, and what is the point of recreating 
a 40-year old design? If we can't do better today (on some dimension of 
"better"), that means that CS is completely stalled since then (and that's 
clearly not true; SPARK alone disproves it). There's also the practical 
issue: If you actually wanted someone to use it, you'd need to offer 
something different. Oliver's reply gives some approaches to that problem.

                                      Randy.