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digitalmars.D.learn - Dub can't find and download packages

reply vanaur <cfcr gmail.com> writes:
Hello.

I'm starting to use D, and therefore Dub.
I didn't find a more suitable category than this one in the forum 
to ask my question, I'm sorry if it is not the most suitable.

My concern is thus the following: I can't add packages to my 
project, Dub warns me that they are not available.
For the example, I try to add this dependency 
(https://code.dlang.org/packages/pegged) with the following 
command:  dub add pegged . Dub then returns an error:


 Failed to get versions for package pegged on provider registry 
 at https://code.dlang.org/ (fallbacks registry at 
 https://codemirror.dlang.org/, registry at 
 https://dub.bytecraft.nl/, registry at 
 https://code-mirror.dlang.io/): Failed to download 
 https://code.dlang.org/api/packages/infos?packages=%5B%22pegged%22%5D&include_dependencies=true&minimize=true
 Could not find package 'pegged'.


My project was initialized correctly with Dub (dub init... + the 
whole procedure). I also tried to add the dependency manually, in 
dub.sdl:

   dependency "pegged" version="~>0.4.2"

But it doesn't change anything.
Why doesn't it work? What do I need to do to get Dub to download 
and add dependencies?

Thanks in advance.

PS: how do you write blocks of code and insert links in forum 
posts? I've tried the makefile syntax, but it doesn't work. 
Thanks too!
Aug 05 2020
parent reply Mike Parker <aldacron gmail.com> writes:
On Wednesday, 5 August 2020 at 17:32:49 UTC, vanaur wrote:

 My concern is thus the following: I can't add packages to my 
 project, Dub warns me that they are not available.
 For the example, I try to add this dependency 
 (https://code.dlang.org/packages/pegged) with the following



 command:  dub add pegged . Dub then returns an error:


 Failed to get versions for package pegged on provider registry 
 at https://code.dlang.org/ (fallbacks registry at 
 https://codemirror.dlang.org/, registry at 
 https://dub.bytecraft.nl/, registry at 
 https://code-mirror.dlang.io/): Failed to download 
 https://code.dlang.org/api/packages/infos?packages=%5B%22pegged%22%5D&include_dependencies=true&minimize=true
 Could not find package 'pegged'.


 My project was initialized correctly with Dub (dub init... + 
 the whole procedure). I also tried to add the dependency 
 manually, in dub.sdl:

   dependency "pegged" version="~>0.4.2"

 But it doesn't change anything.
 Why doesn't it work? What do I need to do to get Dub to 
 download and add dependencies?


You're doing it right. It's possible that the servers were down 
(though it would be a rare circumstance for the fallbacks to be 
down). Or there might be an issue with pegged specifically. Have 
you tried it since? Does it work for other packages?


 PS: how do you write blocks of code and insert links in forum 
 posts? I've tried the makefile syntax, but it doesn't work.


This is a web frontend for plain-text newsgroups at 
nntp://news.digitalmars.com, which also has a mailing list 
frontend. So it doesn't support fancy code formatting. If you'd 
like, you can set the code off with Markdown-style backticks:

```
// Some code
```

It's a common idiom here. And, one day, the web frontend may get 
the ability to display such code blocks in a formatted manner.

As for links, just paste the plain-text link and the forum 
software will linkify it. It's common to use a Markdown-style 
footnote. So, for example, I might recommend like this that you 
visit dlang.org [1].

Alternatively, you could put the link on a new line:

https://dlang.org/

Up to you.

[1]: https://dlang.org/
Aug 06 2020
parent vanaur <cfcr gmail.com> writes:
Thank you for your comments :)

I tried again this morning, and the problem persisted... I have 
just reinstalled my D environment. It must have been badly 
installed, because now everything is working normally.

Looking at the installation files, I saw that there was a 
dependency to libcurl. Maybe it hadn't been installed correctly 
before. To convince myself of this, I simply removed the dynamic 
library from dub binary, and recovered the same error as in my 
original post. So there you go, the problem seems to be solved 
now.

It's strange, I had done the same installation...

On Thursday, 6 August 2020 at 11:38:08 UTC, Mike Parker wrote:

 This is a web frontend for plain-text newsgroups at 
 nntp://news.digitalmars.com, which also has a mailing list 
 frontend. So it doesn't support fancy code formatting. If you'd 
 like, you can set the code off with Markdown-style backticks:
 
 ```
 // Some code
 ```
 
 It's a common idiom here. And, one day, the web frontend may 
 get the ability to display > such code blocks in a formatted 
 manner.
 
 As for links, just paste the plain-text link and the forum 
 software will linkify it. It's common to use a Markdown-style 
 footnote. So, for example, I might recommend like this that you 
 visit dlang.org [1].
 
 Alternatively, you could put the link on a new line:
 
 https://dlang.org/
 
 Up to you.
 
 [1]: https://dlang.org/


I will apply the conventions of the forum then, thank you :)
Aug 06 2020