{ stdenv, curl }: { ipfs, url ? "", curlOpts ? "", outputHash ? "", outputHashAlgo ? "", md5 ? "" , sha1 ? "", sha256 ? "", sha512 ? "", meta ? { }, port ? "8080", postFetch ? "" , preferLocalBuild ? true }: let hasHash = (outputHash != "" && outputHashAlgo != "") || md5 != "" || sha1 != "" || sha256 != "" || sha512 != ""; in if (!hasHash) then throw "Specify sha for fetchipfs fixed-output derivation" else stdenv.mkDerivation { name = ipfs; builder = ./builder.sh; nativeBuildInputs = [ curl ]; # New-style output content requirements. outputHashAlgo = if outputHashAlgo != "" then outputHashAlgo else if sha512 != "" then "sha512" else if sha256 != "" then "sha256" else if sha1 != "" then "sha1" else "md5"; outputHash = if outputHash != "" then outputHash else if sha512 != "" then sha512 else if sha256 != "" then sha256 else if sha1 != "" then sha1 else md5; outputHashMode = "recursive"; inherit curlOpts postFetch ipfs url port meta; # Doing the download on a remote machine just duplicates network # traffic, so don't do that. inherit preferLocalBuild; }