• Mike Parker (7/7) Dec 04 2018 Joakim interviewed Liran for the D Blog about their file system,
• Joakim (4/12) Dec 04 2018 Great to see this finally up! I agree with the only proggit
• Mike Parker (2/6) Dec 04 2018 It's on HN now under a better title.
• Joakim (4/11) Dec 04 2018 Thanks, let's see if it does any better. I asked Atila to submit
• M.M. (5/13) Dec 05 2018 Interesting read. I am new to dlang, and after reading the post,
• Nicholas Wilson (3/18) Dec 05 2018 LDC _is_ an official compiler, they just use a slightly modified
• Joakim (19/34) Dec 05 2018 All three compilers listed on the official download page use the
• Joakim (4/20) Dec 05 2018 Sorry, I compared the wrong Weka branch. Here's the right tag,
• M.M. (4/9) Dec 05 2018 This explains pretty much everything I wanted to know but was

Mike Parker <aldacron gmail.com> writes:

Joakim interviewed Liran for the D Blog about their file system, 
Matrix, and their use of D. Thanks to Joakim for putting it 
together, and to Liran for taking the time to participate!

Blog:
https://dlang.org/blog/2018/12/04/interview-liran-zvibel-of-wekaio/

Reddit:
https://www.reddit.com/r/programming/comments/a3106x/interview_liran_zvibel_of_wekaio/

Joakim <dlang joakim.fea.st> writes:

On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:
 Joakim interviewed Liran for the D Blog about their file 
 system, Matrix, and their use of D. Thanks to Joakim for 
 putting it together, and to Liran for taking the time to 
 participate!

 Blog:
 https://dlang.org/blog/2018/12/04/interview-liran-zvibel-of-wekaio/

 Reddit:
 https://www.reddit.com/r/programming/comments/a3106x/interview_liran_zvibel_of_wekaio/

Great to see this finally up! I agree with the only proggit 
comment though: the title is not descriptive enough for 
reddit/HN, as I doubt most have heard of Liran or Weka.

Mike Parker <aldacron gmail.com> writes:

On Tuesday, 4 December 2018 at 17:15:44 UTC, Joakim wrote:
 On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:

 Great to see this finally up! I agree with the only proggit 
 comment though: the title is not descriptive enough for 
 reddit/HN, as I doubt most have heard of Liran or Weka.

It's on HN now under a better title.

Joakim <dlang joakim.fea.st> writes:

On Wednesday, 5 December 2018 at 06:50:13 UTC, Mike Parker wrote:
 On Tuesday, 4 December 2018 at 17:15:44 UTC, Joakim wrote:
 On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:

 Great to see this finally up! I agree with the only proggit 
 comment though: the title is not descriptive enough for 
 reddit/HN, as I doubt most have heard of Liran or Weka.

 It's on HN now under a better title.

Thanks, let's see if it does any better. I asked Atila to submit 
it to lobste.rs too, his mutex post did well on there last month:

https://lobste.rs/t/d

M.M. <matus email.cz> writes:

On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:
 Joakim interviewed Liran for the D Blog about their file 
 system, Matrix, and their use of D. Thanks to Joakim for 
 putting it together, and to Liran for taking the time to 
 participate!

 Blog:
 https://dlang.org/blog/2018/12/04/interview-liran-zvibel-of-wekaio/

 Reddit:
 https://www.reddit.com/r/programming/comments/a3106x/interview_liran_zvibel_of_wekaio/

Interesting read. I am new to dlang, and after reading the post, 
I asked myself: the company liked the language, but tweaked the 
compiler. Could the company now switch to one of the official 
compilers? If not, why?

Nicholas Wilson <iamthewilsonator hotmail.com> writes:

On Wednesday, 5 December 2018 at 08:02:21 UTC, M.M. wrote:
 On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:
 Joakim interviewed Liran for the D Blog about their file 
 system, Matrix, and their use of D. Thanks to Joakim for 
 putting it together, and to Liran for taking the time to 
 participate!

 Blog:
 https://dlang.org/blog/2018/12/04/interview-liran-zvibel-of-wekaio/

 Reddit:
 https://www.reddit.com/r/programming/comments/a3106x/interview_liran_zvibel_of_wekaio/

 Interesting read. I am new to dlang, and after reading the 
 post, I asked myself: the company liked the language, but 
 tweaked the compiler. Could the company now switch to one of 
 the official compilers? If not, why?

LDC _is_ an official compiler, they just use a slightly modified 
version of LDC (with LTO & PGO'd against their codebase). I

Joakim <dlang joakim.fea.st> writes:

On Wednesday, 5 December 2018 at 08:02:21 UTC, M.M. wrote:
 On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:
 Joakim interviewed Liran for the D Blog about their file 
 system, Matrix, and their use of D. Thanks to Joakim for 
 putting it together, and to Liran for taking the time to 
 participate!

 Blog:
 https://dlang.org/blog/2018/12/04/interview-liran-zvibel-of-wekaio/

 Reddit:
 https://www.reddit.com/r/programming/comments/a3106x/interview_liran_zvibel_of_wekaio/

 Interesting read. I am new to dlang, and after reading the 
 post, I asked myself: the company liked the language, but 
 tweaked the compiler. Could the company now switch to one of 
 the official compilers? If not, why?

All three compilers listed on the official download page use the 
same frontend, written in D:

https://dlang.org/download

The LDC and GDC teams take that DMD frontend and attach it to the 
LLVM and GCC code-generation backends.

As for Weka's tweaks, github shows these different commits from 
their last 1.11 release to the official tag:

https://github.com/ldc-developers/ldc/compare/v1.11.0...weka-io:weka-2.071

I get the sense that's mostly patches backported from newer LDC 
releases, as they understandably go slower than official LDC for 
stability, and some git cruft from maintaining their own branch. 
Their tweaks don't appear to be substantial on a skim, which 
makes sense since Johan is a committer on the LDC team.

Since LDC is an OSS project, they're free to tweak it for their 
own use and use it as they like. Johan has done much work for 
them which they've contributed back upstream to LDC. See Johan's 
blog posts for more info:

http://johanengelen.github.io

Joakim <dlang joakim.fea.st> writes:

On Wednesday, 5 December 2018 at 13:30:21 UTC, Joakim wrote:
 On Wednesday, 5 December 2018 at 08:02:21 UTC, M.M. wrote:
 On Tuesday, 4 December 2018 at 14:21:02 UTC, Mike Parker wrote:
 [...]

 Interesting read. I am new to dlang, and after reading the 
 post, I asked myself: the company liked the language, but 
 tweaked the compiler. Could the company now switch to one of 
 the official compilers? If not, why?

 All three compilers listed on the official download page use 
 the same frontend, written in D:

 https://dlang.org/download

 The LDC and GDC teams take that DMD frontend and attach it to 
 the LLVM and GCC code-generation backends.

 As for Weka's tweaks, github shows these different commits from 
 their last 1.11 release to the official tag:

 https://github.com/ldc-developers/ldc/compare/v1.11.0...weka-io:weka-2.071

Sorry, I compared the wrong Weka branch. Here's the right tag, 
shows fewer commits different:

https://github.com/ldc-developers/ldc/compare/v1.11.0...weka-io:weka-v1.11

M.M. <matus email.cz> writes:

On Wednesday, 5 December 2018 at 13:30:21 UTC, Joakim wrote:
 On Wednesday, 5 December 2018 at 08:02:21 UTC, M.M. wrote:
 [...]

 All three compilers listed on the official download page use 
 the same frontend, written in D:

 [...]

This explains pretty much everything I wanted to know but was 
afraid to ask. Happy to hear about the backporting to LDC as 
well...