Resolving dependencies...
cabal: Could not resolve dependencies:
next goal: network-protocol-xmpp (user goal)
rejecting: network-protocol-xmpp-0.4.8, network-protocol-xmpp-0.4.7
(constraint from user target requires ==0.4.6)
trying: network-protocol-xmpp-0.4.6
trying: base-4.9.0.0/installed-4.9... (dependency of
network-protocol-xmpp-0.4.6)
trying: transformers-0.5.2.0/installed-0.5... (dependency of
network-protocol-xmpp-0.4.6)
next goal: gsasl (dependency of network-protocol-xmpp-0.4.6)
rejecting: gsasl-0.3.6 (conflict: requires pkg-config package libgsasl>=1.1,
not found in the pkg-config database)
rejecting: gsasl-0.3.5, gsasl-0.3.4 (conflict: base==4.9.0.0/installed-4.9...,
gsasl => base>=4.0 && <4.8)
rejecting: gsasl-0.3.3, gsasl-0.3.2, gsasl-0.3.1, gsasl-0.3 (conflict:
transformers==0.5.2.0/installed-0.5..., gsasl => transformers>=0.2 && <0.3)
rejecting: gsasl-0.2, gsasl-0.1 (conflict: network-protocol-xmpp => gsasl>=0.3
&& <0.4)
Dependency tree exhaustively searched.