Nheko requires old version of mtxclient
Nheko cannot currently be installed, because it wants the 0.3.0 version of mtxclient's shared library:
ERROR: unsatisfiable constraints:
so:libmatrix_client.so.0.3.0 (missing):
required by: nheko-0.7.1-r1[so:libmatrix_client.so.0.3.0]