I'm trying to start a shell with Cuda. I have following shell.nix file

{ pkgs ? import  { } }:

pkgs.mkShell {
  name = "cuda-env-shell";
  buildInputs = with pkgs; [
    unzip
    # other packages
    cudatoolkit
    # other packages
    binutils
  ];
}

But this fails due to following error. I have faced this before with large files like davinci-resolve for example. For davinci-resolve, my solution was to create a new flake using axel with 10 connections and it worked nicely every single time. Right now I'm facing this issue with Cuda.

[1/0/3 built, 4 copied (183.8/183.8 MiB), 42.8 MiB DL] building cuda_11.8.0_520.61.05_linux.run:                                  Dload  Upload   Total   Spent    Left
error: builder for '/nix/store/idz14mzbsv4k5v5ims095jcjk2r50glr-cuda_11.8.0_520.61.05_linux.run.drv' failed with exit code 1;
       last 7 log lines:
       >
       > trying https://developer.download.nvidia.com/compute/cuda/11.8.0/local_installers/cuda_11.8.0_520.61.05_linux.run 
       >   % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
       >                                  Dload  Upload   Total   Spent    Left  Speed
       >  49 4135M   49 2044M    0     0   772k      0  1:31:20  0:45:08  0:46:12     0
       > curl: (56) Recv failure: Connection reset by peer

I want to get Cuda but can I retrieve the src using axel instead of curl? I tried something like following but it doesn't seem to be valid syntax?

cudatoolkit.overrideAttrs
    (finalAttrs: previousAttrs: {
      pname = previousAttrs.pname + "-bar";
      src = runCommandLocal "${previousAttrs.pname}.run" rec { } ''
        axel \
          --num-connections=10 \
          --verbose \
          --insecure \
          --output $out \
          "https://developer.download.nvidia.com/compute/cuda/11.8.0/local_installers/cuda_11.8.0_520.61.05_linux.run "
      '';
    })

Error:

at /nix/store/0g53xyh39z3y90p4d8r341wbqyjy1zhl-source/pkgs/stdenv/generic/make-derivation.nix:395:7:

          394|       depsHostHost                = elemAt (elemAt dependencies 1) 0;
          395|       buildInputs                 = elemAt (elemAt dependencies 1) 1;
             |       ^
          396|       depsTargetTarget            = elemAt (elemAt dependencies 2) 0;

       error: Dependency is not of a valid type: element 13 of buildInputs for cuda-env-shell

I am trying to find if it is possible to download a part of a file (any file) via axel or aria2 or any other tools available. For example there is a movie file (because doing this kind of thing make sense in A/V files). How could I download only the last 50MB or the third 60Mb from the first of the file? The files are on HTTP servers mostly; but could be on FTP servers. If it is possible to download them via other protocols, this would also be an option.

I am trying to download following video: https://www.youtube.com/watch?v=pQWj2Fgxdrc by combining 'youtube-dl' and 'axel'. I am trying to download this video in such a way that I want these two softwares (youtube-dl and axel) to not only save this video as "interview.mp4" but also limit download speed to 200KB. For this purpose, I used following command: youtube-dl -f 22 -c -i --external-downloader /usr/bin/axel -o 'interview.mp4' -s 200000 https://www.youtube.com/watch?v=pQWj2Fgxdrc Here I am using following options: > -f 22 for video format > > -c for resume download > > -i for ignore errors > > -o for output file name > > -s 200000 for limit download speed to 200KB However, instead of downloading the video at 200KB and saving it as "interview.mp4", it is giving following error: ERROR: fixed output name but more than one file to download I have also tried following variation of command: youtube-dl -f 22 -c -i --external-downloader /usr/bin/axel -s 200000 -o 'interview.mp4' https://www.youtube.com/watch?v=pQWj2Fgxdrc and youtube-dl -f 22 -c -i --external-downloader /usr/bin/axel -o 'interview.mp4' https://www.youtube.com/watch?v=pQWj2Fgxdrc -s 200000 and youtube-dl -f 22 -c -i -o 'interview.mp4' --external-downloader /usr/bin/axel -s 200000 https://www.youtube.com/watch?v=pQWj2Fgxdrc But still same error is appearing. However, if I remove the option (-s 200000), the error disappear and the video starts to download. But I want to use (-s 200000) option so that it should not eat all the bandwidth. What mistake I am doing here?

Is there a way to use https authentication with Axel to download files? I have gone through this answer and tried what was written, but to no extent. I got
HTTP/1.1 401 Unauthorized
as the output for this input command:
axel -n 60 -k -H "Authorisation: Basic [some hash string]" "https://xxx.rar "
for which the hash string was generated using :
echo -n "username:password" | openssl base64 So ultimately, I want to know, what do I change in the input command to be able to download the file?

Axel is not resolving URLs that redirect to another URL that has the file as an attachment. As you see, I'm getting 404 when I try to download this URL. (original site is replaced with example.com) ~ ▶ axel https://eusa.example.com/zipstream/1581777.zip?tunnel=1&token=b7385bb62e3111e3ace1002481265109&storage=s09 767 768 Initializing download: https://eusa.example.com/zipstream/1581777.zip?tunnel=1 [1] Exit 1 axel https://eusa.example.com/zipstream/1581777.zip?tunnel=1 + Done token=b7385bb62e3111e3ace1002481265109 ~ ▶ HTTP/1.1 404 Not Found The website documentations describe URL redirect as following: > First response is always a redirect. Location of the file is in > ‘Location’ header. The client must send a new GET request to the new > location. Only headers are shown. HTTP/1.1 302 FOUND Server: nginx Date: Thu, 09 Feb 2012 15:58:53 GMT Content-Type: text/html; charset=utf-8 Connection: keep-alive Keep-Alive: timeout=60 Content-Length: 385 Location: http://s01.example.com/v2/files/26205116/download?oauth_token=4a63387841ce11e1a047001018321b64 goes to: HTTP/1.1 200 OK Server: nginx Date: Thu, 09 Feb 2012 15:58:53 GMT Content-Type: application/x-rar Content-Length: 3190802 Last-Modified: Fri, 16 Sep 2011 11:42:13 GMT Connection: keep-alive Keep-Alive: timeout=60 Content-Disposition: attachment; filename="file.rar" Accept-Ranges: bytes curl is capable of downloading the URL. But axel gives me 404. I want to have Axel's multi-connection feature. How can I use curl to just resolve the URL and give downloading task to axel?