some.nix

  emacs = {
    buildOrg = {pkg ? emacs25-nox}:
    let
      buildEnv = { buildInputs = [pkg]; };
      buildScript = ''
        mkdir -p $out;
        ln -s "${./init.org}" ./init.org;
        emacs -Q --script "${./assets/org-build.el}" -f make-init-el;
        cp init.el $out/init.el;
      '';
      buildResult = (runCommand "buildOrg" buildEnv buildScript);
    in "${buildResult.outPath}/init.el";
  }