List of packages using spidermonkey

```
./applications/networking/browsers/elinks/default.nix:7:, enableSpidermonkey ? (stdenv.hostPlatform == stdenv.buildPlatform), spidermonkey ? null
./applications/networking/browsers/elinks/default.nix:36:    ++ stdenv.lib.optional enableSpidermonkey spidermonkey
./applications/networking/browsers/elinks/default.nix:53:    ++ stdenv.lib.optional enableSpidermonkey "--with-spidermonkey=${spidermonkey}"
./applications/networking/pyload/default.nix:1:{ stdenv, fetchFromGitHub, fetchpatch, pythonPackages, gocr, unrar, rhino, spidermonkey }:
./applications/networking/pyload/default.nix:33:    unrar rhino spidermonkey gocr pythonPackages.paver
./tools/misc/plowshare/default.nix:1:{ stdenv, fetchFromGitHub, makeWrapper, curl, recode, spidermonkey }:
./tools/misc/plowshare/default.nix:23:      wrapProgram "$out/bin/$fn" --prefix PATH : "${stdenv.lib.makeBinPath [ curl recode spidermonkey ]}"
./tools/text/jsawk/default.nix:1:{ stdenv, fetchFromGitHub, makeWrapper, spidermonkey }:
./tools/text/jsawk/default.nix:18:      --prefix PATH : "${spidermonkey}/bin"
./servers/http/couchdb/2.0.0.nix:1:{ stdenv, fetchurl, erlang, icu, openssl, spidermonkey
./servers/http/couchdb/2.0.0.nix:17:  buildInputs = [ erlang icu openssl spidermonkey (python3.withPackages(ps: with ps; [ requests ]))];
./servers/http/couchdb/3.nix:1:{ stdenv, fetchurl, erlang, icu, openssl, spidermonkey
./servers/http/couchdb/3.nix:16:  buildInputs = [ erlang icu openssl spidermonkey (python3.withPackages(ps: with ps; [ requests ]))];
./servers/http/couchdb/3.nix:18:    substituteInPlace src/couch/rebar.config.script --replace '/usr/include/mozjs-68' "${spidermonkey.dev}/include/mozjs-68"
./servers/http/couchdb/3.nix:23:  configureFlags = ["--spidermonkey-version=68"];
./servers/http/couchdb/default.nix:1:{ stdenv, fetchurl, erlang, icu, openssl, spidermonkey, curl, help2man
./servers/http/couchdb/default.nix:14:  buildInputs = [ erlang icu openssl spidermonkey curl ];
```

So rename spidermonkey -> spidermonkey_38 and remove that attr?