Luke Granger-Brown
57725ef3ec
git-subtree-dir: third_party/nixpkgs git-subtree-split: 76612b17c0ce71689921ca12d9ffdc9c23ce40b2
49 lines
1.1 KiB
Nix
49 lines
1.1 KiB
Nix
{ lib
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, fetchurl
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, runCommand
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, writeText
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}:
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{ name ? "deps"
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, data
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, dontFixup ? true
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, ...
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}
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@ attrs:
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let
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data' = builtins.removeAttrs
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(if builtins.isPath data then lib.importJSON data else data)
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[ "!version" ];
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urlToPath = url:
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if lib.hasPrefix "https://" url then (
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let
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url' = lib.drop 2 (lib.splitString "/" url);
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in "https/${builtins.concatStringsSep "/" url'}"
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)
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else builtins.replaceStrings ["://"] ["/"] url;
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code = ''
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mkdir -p "$out"
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cd "$out"
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'' + builtins.concatStringsSep "" (lib.mapAttrsToList (url: info:
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let
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key = builtins.head (builtins.attrNames info);
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val = info.${key};
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path = urlToPath url;
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name = baseNameOf path;
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source = {
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redirect = "$out/${urlToPath val}";
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hash = fetchurl { inherit url; hash = val; };
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text = writeText name val;
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}.${key} or (throw "Unknown key: ${url}");
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in ''
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mkdir -p "${dirOf path}"
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ln -s "${source}" "${path}"
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'') data');
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in
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runCommand name (builtins.removeAttrs attrs [ "name" "data" ] // {
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passthru = (attrs.passthru or {}) // {
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data = writeText "deps.json" (builtins.toJSON data);
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};
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}) code
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