Motivation for this change

The LanguageTool extension for Firefox explains how to use it with your own local server: https://addons.mozilla.org/fr/firefox/addon/languagetool/

They recommend running an HTTP server. I have been unable to run an HTTP server using languagetool-server but following http://wiki.languagetool.org/http-server I was able to patch the derivation to add a languagetool-http-server command that accomplishes what I was aiming at.

Cc @edwtjo @jgeerds. You may know better ways to do this.

Things done

• Tested using sandboxing (nix.useSandbox on NixOS, or option build-use-sandbox in nix.conf on non-NixOS)
• Built on platform(s)
  • NixOS
  • macOS
  • other Linux distributions
• Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
• Tested compilation of all pkgs that depend on this change using nix-shell -p nox --run "nox-review wip"
• Tested execution of all binary files (usually in ./result/bin/)
• Fits CONTRIBUTING.md.