72 lines
1.4 KiB
Nix
72 lines
1.4 KiB
Nix
{
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lib,
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fetchurl,
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runCommand,
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writeText,
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}:
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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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}@attrs:
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let
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data' = builtins.removeAttrs (if builtins.isPath data then lib.importJSON data else data) [
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"!version"
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];
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urlToPath =
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url:
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if lib.hasPrefix "https://" url then
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(
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let
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url' = lib.drop 2 (lib.splitString "/" url);
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in
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"https/${builtins.concatStringsSep "/" url'}"
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)
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else
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builtins.replaceStrings [ "://" ] [ "/" ] url;
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code =
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''
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mkdir -p "$out"
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cd "$out"
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''
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+ builtins.concatStringsSep "" (
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lib.mapAttrsToList (
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url: info:
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let
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key = builtins.head (builtins.attrNames info);
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val = info.${key};
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path = urlToPath url;
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name = baseNameOf path;
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source =
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{
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redirect = "$out/${urlToPath val}";
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hash = fetchurl {
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inherit url;
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hash = val;
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};
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text = writeText name val;
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}
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.${key} or (throw "Unknown key: ${url}");
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in
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''
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mkdir -p "${dirOf path}"
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ln -s "${source}" "${path}"
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''
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) data'
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);
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in
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runCommand name (
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builtins.removeAttrs attrs [
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"name"
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"data"
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]
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// {
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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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}
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) code
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