[RFC] Bump deps

[lucafavatella]

No description provided.

[lucafavatella]

rebar 2 on CI fails with something like:

Pulling syslog from {git,"https://github.com/Vagabond/erlang-syslog.git",

                         {ref,"0e4f0e95c361af298c5d1d17ceccfa831efc036d"}}

Cloning into 'syslog'...

ERROR: 'get-deps' failed while processing /home/travis/build/lucafavatella/lager_syslog: {'EXIT',{badarg,[{io_lib,format,

                         ["git checkout -q ~s",

                          [{ref,"0e4f0e95c361af298c5d1d17ceccfa831efc036d"}]],

                         [{file,"io_lib.erl"},{line,168}]},

                 {rebar_deps,download_source,2,[]},

                 {rebar_deps,use_source,3,[]},

                 {rebar_deps,'-get-deps/2-fun-0-',2,[]},

                 {lists,foldl,3,[{file,"lists.erl"},{line,1263}]},

                 {rebar_deps,'get-deps',2,[]},

                 {rebar_core,run_modules,4,[]},

                 {rebar_core,execute,6,[]}]}}

[lucafavatella]

Not sure syslog dep supports rebar 2 any longer - maybe it is supported on a best effort basis and not tested on CI.

[lucafavatella]

Apparently the problem is not the syslog dep but the way the syslog dep is expressed. As I attempted to refer to specific commit, the syntax is incompatible between rebar3 and 2:

rebar 2 https://github.com/rebar/rebar/wiki/Dependency-management#example

    % {mochiweb, "2.3.2", {git, "https://github.com/mochi/mochiweb.git", "15bc558d8222b011e2588efbd86c01d68ad73e60"},

rebar3 http://www.rebar3.org/docs/dependencies#section-declaring-dependencies
requires {ref, _} tuple around commit string.

[lucafavatella]

I expect CI tests to pass for both rebar 2 and 3 now. Once syslog is tagged (see also #29 (comment)) the rebar 2 sed hack in the CI script can be removed.