How is the channel package.json file is generated?

Sigmanificient · May 2, 2024, 4:03pm

In the channel releases there is a packages.json.br file containing all the information about every package within the latest release.

I was wondering how this file was generated from nixpkgs?
Is there any way to reproduce it locally?

Artturin · May 2, 2024, 4:29pm

github.com

NixOS/nixpkgs/blob/63c4c8d6d77f80f6bee07672bdcfd8d6180fdd92/pkgs/top-level/make-tarball.nix#L41


      
          
          
dontBuild = false;
          
          
doCheck = true;
          
          
checkPhase = ''
            echo "generating packages.json"
          
          
  (
              echo -n '{"version":2,"packages":'
              NIX_STATE_DIR=$TMPDIR NIX_PATH= nix-env -f $src -qa --meta --json --show-trace --arg config 'import ${./packages-config.nix}'
              echo -n '}'
            ) | sed "s|$src/||g" | jq -c > packages.json
          
          
  # Arbitrary number. The index has ~115k packages as of April 2024.
            if [ $(jq -r '.packages | length' < packages.json) -lt 100000 ]; then
              echo "ERROR: not enough packages in the search index, bailing out!"
              exit 1
            fi
          
          
  packages=$out/packages.json.br

Sigmanificient · May 2, 2024, 5:55pm

I’m not sure how to build it

Artturin · May 2, 2024, 8:03pm

nix build -f pkgs/top-level/release.nix tarball