https://fedoraproject.org/wiki/Changes/Erlang_22 == Summary == Update Erlang/OTP to version 22. == Owner == * Name: [[User:Peter|Peter Lemenkov]], [[SIGs/Erlang|Fedora Erlang SIG]], [[User:bowlofeggs|Randy Barlow]], [[User:jcline|Jeremy Cline]] * Email: lemenkov@xxxxxxxxx, erlang@xxxxxxxxxxxxxxxxxxxxxxx, bowlofeggs@xxxxxxxxxxxxxxxxx, jcline@xxxxxxxxxxxxxxxxx == Detailed Description == Upgrade Erlang to version 22 which brings a lot of changes. Just a few highlights: * Better and faster compiler. Faster string operations which Elixir users will benefit. * A new experimental low-level socket API. * Even faster SSL/TLS operations. * Improved [http://erlang.org/doc/apps/erts/erl_dist_protocol.html Erlang Distribution Protocol] handling when it comes to a huge messages (splitting into smaller ones, no longer blocking). Aside from this, we plan to improve quality of Erlang and related packages. These are shortcomings we want to address: * Every daemon written in Erlang has its own logging solution which doesn't use neither syslog nor Journald. We should start switching them to Journald. * We should add ability to use D-Bus via [https://github.com/lizenn/erlang-dbus erlang-dbus] library. * Further improve [[User:Peter/Erlang_Packaging_Guidelines|Erlang Packaging Guidelines]] and promote it as the official guideline. * Switch to rebar3 as a main build tool. == Benefit to Fedora == Fedora users, both developers and end-users, will have visible benefits from using Fedora-provided packages. Namely: * Improved logging, better unified with the rest of system. == Scope == * Proposal owners: ** [https://bugzilla.redhat.com/1683660 Upgrade Erlang to the latest version (22.0)]. ** We must rebuild every package which requires NIF version (listed below in the [[#Dependencies|Dependencies]] section) against Erlang 22.x.y. ** Every Erlang daemon's systemd unit must require epmd.socket. ** We need to fill new review request for [https://github.com/travelping/ejournald erlang-ejournald] *** We have to fill new review request for [https://github.com/travelping/lager_journald_backend erlang-lager_journald_backend] ** We need to fill new review request for [https://github.com/lizenn/erlang-dbus erlang-dbus] ** Upgrade outdated packages: *** {{package|riak|Riak}} **** {{package|riak|Riak}} has has been retired. We have to re-add it back. *** {{package|ejabberd|Ejabberd}} *** {{package|rabbitmq-server|RabbitMQ}}. *** {{package|couchdb|CouchDB}} ** {{package|erlang-rebar3|rebar3}} *** Provide/adjust RPM macros for rebar3. ** Package GDB macros for easier coredump debugging (see also [https://bugzilla.redhat.com/show_bug.cgi?id=663253 this ticket]). ** Enable Kerberos authentication in {{package|ejabberd|Ejabberd}} (finally). * Other developers: N/A * Release engineering: TBA * Policies and guidelines: ** We should promote officially [[User:Peter/Erlang_Packaging_Guidelines|Erlang Packaging Guidelines]]. * Trademark approval: N/A (not needed for this Change) == Upgrade/compatibility impact == * Every Erlang upgrade requires the rebuilding of modules which contains [http://www.erlang.org/doc/reference_manual/ports.html ports] or [http://www.erlang.org/doc/tutorial/nif.html NIFs], and we will rebuild all such modules in Fedora. However if a user has some additional modules not available in a Fedora repository, then these modules must be rebuilt manually. * So-called [http://erlang.org/doc/man/HiPE_app.html HiPE] continues to deteriorate. In this version it's barely functional and likely is going to be removed in the next one. == How To Test == * Ensure that high-grade Erlang applications are still working: {| border="1" |- | '''Name''' || '''Tested''' |- | {{package|couchdb}} || {{no}} |- | {{package|ejabberd}} || {{no}} |- | {{package|elixir}} || {{no}} |- | {{package|mochiweb}} || {{no}} |- | {{package|rabbitmq-server}} || {{no}} |- | {{package|riak}} || {{no}} (package was retired :( ) |- | {{package|wings}} || {{no}} |} * Collect feedback from volunteers regarding their experience with this Erlang/OTP version == User Experience == Users will get more robust, scalable, and fast Erlang applications. == Dependencies == The following packages must be rebuilt: {| border="1" |- | '''Name''' || '''Rebuilt''' |- | {{package|couchdb}} || {{no}} |- | {{package|erlang-basho_metrics}} || {{no}} |- | {{package|erlang-bitcask}} || {{no}} |- | {{package|erlang-cache_tab}} || {{no}} |- | {{package|erlang-cl}} || {{no}} |- | {{package|erlang-ebloom}} || {{no}} |- | {{package|erlang-eleveldb}} || {{no}} |- | {{package|erlang-emmap}} || {{no}} |- | {{package|erlang-erlsyslog}} || {{no}} |- | {{package|erlang-esasl}} || {{no}} |- | {{package|erlang-esdl}} || {{no}} |- | {{package|erlang-esip}} || {{no}} |- | {{package|erlang-fast_tls}} || {{no}} |- | {{package|erlang-fast_xml}} || {{no}} |- | {{package|erlang-fast_yaml}} || {{no}} |- | {{package|erlang-hyper}} || {{no}} |- | {{package|erlang-iconv}} || {{no}} |- | {{package|erlang-jiffy}} || {{no}} |- | {{package|erlang-js}} || {{no}} |- | {{package|erlang-lfe}} || {{no}} |- | {{package|erlang-riak_ensemble}} || {{no}} |- | {{package|erlang-sd_notify}} || {{no}} |- | {{package|erlang-skerl}} || {{no}} |- | {{package|erlang-snappy}} || {{no}} |- | {{package|erlang-stringprep}} || {{no}} |- | {{package|erlang-xmpp}} || {{no}} |} == Contingency Plan == * Contingency mechanism: None necessary. Instead of falling back to the previous version we should fix existing packages in order to help the Community. We should also monitor upstream development process for potentially discovered issues and proactively apply patches (as we already did with [[Features/Erlang_R14|Erlang R14]], [[Features/Erlang_R15|Erlang R15]], [[Features/Erlang_R16|Erlang R16]], [[Changes/BetterErlangSupport|Erlang 17]], [[Changes/Erlang_18|Erlang 18]], [[Changes/Erlang_19|Erlang 19]], [[Changes/Erlang_20|Erlang 20]], and [[Changes/Erlang_21|Erlang 21]]). It should be noted that this change consists from an independent or loosely coupled smaller changes. If we fail to deliver some changes in time, we should reschedule these exact changes to the future Fedora release while keeping already implemented ones. * Contingency deadline: N/A * Blocks release? N/A * Blocks product? N/A == Documentation == * [http://www.erlang.org/news/132 Erlang/OTP 22.0 release notes] == Release Notes == Erlang/OTP 22.0 is available in Fedora 31. -- Ben Cotton He / Him / His Fedora Program Manager Red Hat TZ=America/Indiana/Indianapolis _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
