Greg Hellings
7510136304
Instead of manually downloading the Zim files with a torrent directly, move them into an actual derivation so it can easily be built into the resulting images. Also, write an updater script that can automatically download the files, determine the latest versions for each type and each language, and generate the hash key values for them
48 lines
1.3 KiB
Nix
48 lines
1.3 KiB
Nix
{
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callPackage,
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fetchtorrent,
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lib,
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stdenv,
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...
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}:
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let
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inherit (lib.attrsets) mapAttrs mapAttrsRecursiveCond;
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# Converts the inputs from the file into a fetchurl command
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zim =
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type: val:
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fetchtorrent {
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inherit (val) hash;
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url = "https://download.kiwix.org/zim/${type}/${val.name}.torrent";
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curlOptsList = [ "-L" ];
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};
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# Uses the function above to convert the JSON into a structure of fetchurl derivations
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zims = mapAttrs (_: types: (mapAttrs (type: hash: zim type hash) types)) (
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builtins.fromJSON (builtins.readFile ./zim/blobs.json)
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);
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# Turns the fetchurl derivations into a list of strings, copying the results into a final output
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copies = builtins.concatStringsSep "\n" (
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lib.attrsets.collect builtins.isString (
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mapAttrsRecursiveCond (as: !(lib.attrsets.isDerivation as)) # don't recurse derivations
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(_: v: "cp ${v} $out/") # copy derivation to destination
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zims
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)
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);
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in
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stdenv.mkDerivation {
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name = "zims";
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version = "2024-10";
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passthru = {
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inherit zims;
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updater = (callPackage ./zim/updater.nix { });
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};
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phases = [ "installPhase" ];
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# Collect all the zim files into a single folder derivation
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installPhase = ''
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mkdir -p $out
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echo "${copies}" > $out/derp.txt
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'';
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}
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