* gnu/packages/patches/onionshare-cli-async-mode.patch: New file.
* gnu/local.mk (dist_patch_DATA): Add it.
* gnu/packages/tor.scm (onionshare): Update to 2.6.
[source]: Use patch.
[inputs]: Add xdg-utils. Move xvfb-run, used for tests, to ...
[native-inputs]: here.
[arguments]: Run tests. Add "absolutize" phase for xdg-open.
