$ sudo apt-get install erlang
Reading package lists... Done
Building dependency tree
Reading state information... Done
You might want to run 'apt-get -f install' to correct these:
The following packages have unmet dependencies:
 couchdb : Depends: couchdb-bin (>= 1.5.0-0ubuntu1) but it is not going to be installed
 erlang : Depends: erlang-base but it is not going to be installed or
                   erlang-base-hipe
          Depends: erlang-dev
          Depends: erlang-appmon
          Depends: erlang-asn1
          Depends: erlang-common-test
          Depends: erlang-corba
          Depends: erlang-crypto
          Depends: erlang-debugger
          Depends: erlang-dialyzer
          Depends: erlang-diameter but it is not going to be installed
          Depends: erlang-edoc
          Depends: erlang-eldap but it is not going to be installed
          Depends: erlang-erl-docgen
          Depends: erlang-et
          Depends: erlang-eunit
          Depends: erlang-gs
          Depends: erlang-ic
          Depends: erlang-inets
          Depends: erlang-inviso
          Depends: erlang-megaco
          Depends: erlang-mnesia
          Depends: erlang-observer
          Depends: erlang-odbc
          Depends: erlang-os-mon
          Depends: erlang-parsetools
          Depends: erlang-percept
          Depends: erlang-pman
          Depends: erlang-public-key
          Depends: erlang-reltool
          Depends: erlang-runtime-tools
          Depends: erlang-snmp
          Depends: erlang-ssh
          Depends: erlang-ssl
          Depends: erlang-syntax-tools
          Depends: erlang-test-server
          Depends: erlang-toolbar
          Depends: erlang-tools
          Depends: erlang-tv
          Depends: erlang-typer
          Depends: erlang-webtool
          Depends: erlang-wx
          Depends: erlang-xmerl
          Recommends: erlang-jinterface but it is not going to be installed
          Recommends: erlang-ic-java but it is not going to be installed
          Recommends: erlang-mode but it is not going to be installed
          Recommends: erlang-src but it is not going to be installed
          Recommends: erlang-examples but it is not going to be installed
 erlang-nox : Depends: erlang-base but it is not going to be installed or
                       erlang-base-hipe
              Depends: erlang-asn1
              Depends: erlang-corba
              Depends: erlang-crypto
              Depends: erlang-diameter but it is not going to be installed
              Depends: erlang-edoc
              Depends: erlang-eldap but it is not going to be installed
              Depends: erlang-erl-docgen
              Depends: erlang-eunit
              Depends: erlang-ic
              Depends: erlang-inets
              Depends: erlang-mnesia
              Depends: erlang-odbc
              Depends: erlang-os-mon
              Depends: erlang-parsetools
              Depends: erlang-percept
              Depends: erlang-public-key
              Depends: erlang-runtime-tools
              Depends: erlang-snmp
              Depends: erlang-ssh
              Depends: erlang-ssl
              Depends: erlang-syntax-tools
              Depends: erlang-tools
              Depends: erlang-webtool
              Depends: erlang-xmerl
E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).
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