feat: epmdless clustering by doorgan · Pull Request #205 · expert-lsp/expert

doorgan · 2025-11-10T22:12:56Z

Alternative to #191 without introducing dependencies.

TODO:

Figure out why the engine node thinks Forge.EPMD does not exist.

mhanberg · 2025-11-11T15:06:00Z

+## Enable deployment without epmd
+## (requires changing both vm.args and remote.vm.args)
+-epmd_module Elixir.XPForge.EPMD
+-start_epmd false -dist_listen false


I don't think we need the -dist_listen false anymore

Yeah, this is a leftover of me splitting hairs

mhanberg · 2025-11-11T15:08:11Z

Figure out why the engine node thinks Forge.EPMD does not exist.

Are you seeing this in tests or when you actually put it up?

doorgan · 2025-11-11T15:14:10Z

@mhanberg both in tests and when building a release, I'm getting this error:

Kernel pid terminated (application_controller) ("{application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,'Elixir.Forge.EPMD',{'EXIT',{undef,[{'Elixir.Forge.EPMD',start_link,[],[]},{supervisor,do_start_child_i,3,[{file,\"supervisor.erl\"},{line,959}]},{supervisor,do_start_child,3,[{file,\"supervisor.erl\"},{line,945}]},{supervisor,'-start_children/2-fun-0-',3,[{file,\"supervisor.erl\"},{line,929}]},{supervisor,children_map,4,[{file,\"supervisor.erl\"},{line,1820}]},{supervisor,init_children,2,[{file,\"supervisor.erl\"},{line,889}]},{gen_server,init_it,2,[{file,\"gen_server.erl\"},{line,2229}]},{gen_server,init_it,6,[{file,\"gen_server.erl\"},{line,2184}]}]}}}}}},{kernel,start,[normal,[]]}}}")

mhanberg · 2025-11-11T15:25:10Z

@mhanberg both in tests and when building a release, I'm getting this error:

Kernel pid terminated (application_controller) ("{application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,'Elixir.Forge.EPMD',{'EXIT',{undef,[{'Elixir.Forge.EPMD',start_link,[],[]},{supervisor,do_start_child_i,3,[{file,\"supervisor.erl\"},{line,959}]},{supervisor,do_start_child,3,[{file,\"supervisor.erl\"},{line,945}]},{supervisor,'-start_children/2-fun-0-',3,[{file,\"supervisor.erl\"},{line,929}]},{supervisor,children_map,4,[{file,\"supervisor.erl\"},{line,1820}]},{supervisor,init_children,2,[{file,\"supervisor.erl\"},{line,889}]},{gen_server,init_it,2,[{file,\"gen_server.erl\"},{line,2229}]},{gen_server,init_it,6,[{file,\"gen_server.erl\"},{line,2184}]}]}}}}}},{kernel,start,[normal,[]]}}}")

What stands out to me is that the module name is not namespaced.

mhanberg · 2025-11-11T15:25:42Z

  require Logger

  def init(%Project{} = project, document_store_entropy, app_configs) do
+    Application.put_env(:kernel, :epmd_module, Forge.EPMD, persistent: true)


Do you know why this is necessary?

I't not or it should not be, I'm trying out things from the Livebook codebase
It seems like the vm tries to find the EPMD module before loading the code paths provided via -pa
Here in particular I was trying to not specify the epmd module with erl flags and instead try to change the epmd module after the engine node starts. This line wasn't reached because the rpc command to bootstrap didn't get through, but this in the -e flag doesn't help either

doorgan · 2025-11-11T15:32:50Z

What stands out to me is that the module name is not namespaced.

Ah, that log is from running tests, where namespacing doesn't run
If I build a release I get this in the lsp logs:

[ERROR][2025-11-10 19:03:47] ...p/_transport.lua:36     "rpc"   "/Users/dorgan/dev/expert/apps/expert/burrito_out/expert_darwin_arm64"  "stderr"        "plication_controller) (\"{application_start_failure,kernel,{{shutdown,{failed_to_start_child,net_sup,{shutdown,{failed_to_start_child,'Elixir.XPForge.EPMD',{'EXIT',{undef,[{'Elixir.XPForge.EPMD',start_link,[],[]},{supervisor,do_start_child_i,3,[{file,\\\"supervisor.erl\\\"},{line,420}]},{supervisor,do_start_child,2,[{file,\\\"supervisor.erl\\\"},{line,406}]},{supervis"

doorgan · 2025-11-11T22:28:43Z

I can reproduce the same issues on a barebones mix project: https://github.com/doorgan/epmdless

It does partially work if I follow @josevalim's example and run elixirc on a file containing both modules(although I get the requested disconnect from node in order to prevent overlapping partitions warning and children can't connect to each other), but it breaks inside a mix project

mhanberg · 2025-11-12T15:25:07Z

I haven't researched further to validate and find a solution, but I believe the reason this is happening in the engine but not in expert is because expert is started as a release, which i believe by default loads all modules before the app starts.

Normal mix run or mix phx.server or iex -S mix invocations will lazily load modules as they are started, which is why it isn't present when it tries to utilize the -epmd_module. Which it seems to not load it when it tries to invoke it i guess.

Relevant section from the release docs at https://hexdocs.pm/elixir/releases.html#operating-system-scripts

# # Set the release to load code on demand (interactive) instead of preloading (embedded).
# export RELEASE_MODE=interactive

josevalim · 2025-11-12T16:31:15Z

I can take a look later but in Livebook we don't start the node in the release, we explicitly call :net_kernel.start or similar to start them. It may be for the reasons above. i will investigate later.

doorgan · 2025-11-14T15:20:46Z

@josevalim thanks for all the help! This PR is now ready for testing and review

doorgan · 2025-11-14T15:26:11Z

+              (cd "apps/$proj" && elixir --erl "-start_epmd false -epmd_module Elixir.Forge.EPMD" -S mix {{args}})
+            ;;
+            engine)
+              (cd "apps/$proj" && elixir --erl "-start_epmd false -epmd_module Elixir.Forge.EPMD" -S mix {{args}})


I think it's still useful to keep them separate even if they're the same right now but I don't feel strongly about it

josevalim · 2025-11-15T16:23:19Z

+            you must set the environment variable ELIXIR_ERL_OPTIONS="-epmd_module #{Forge.EPMD}"
+            """)
+          end
+      end


Should we do this when expert boots rather than when we try to start a child node?

josevalim · 2025-11-15T16:24:56Z

+
+## Enable deployment without epmd
+## (requires changing both vm.args and remote.vm.args)
+-epmd_module Elixir.XPForge.EPMD


Please double check this is indeed necessary. You may be fine using epmd for remote debugging (or maybe remote debugging is pointless).

josevalim

Looks good to me! I have added some comments but none of them are stoppers (and they might be wrong :D)

mhanberg

Works on my corporate macbook and on my personal linux desktop

🤖 I have created a release *beep* *boop* --- ## [0.1.0-rc.0](v0.1.0...v0.1.0-rc.0) (2026-02-19) ### ⚠ BREAKING CHANGES * add CLI flag handling ([#185](#185)) ### Features * add CLI flag handling ([#185](#185)) ([46713a1](46713a1)) * add engine subcommands to expert ([#254](#254)) ([d7c348c](d7c348c)) * add missing require code action ([#283](#283)) ([a9ee0ec](a9ee0ec)) * configure Workspace Symbols to return all symbols on empty query ([#293](#293)) ([03ec5c6](03ec5c6)) * create undefined function code action ([#287](#287)) ([9624b3a](9624b3a)) * **engine:** hover for module attributes ([#329](#329)) ([1330370](1330370)) * **engine:** indicate progress when loading checkpoint ([#313](#313)) ([fad5a0b](fad5a0b)) * **engine:** support shorthand notation inside ~H sigil ([#278](#278)) ([e1e5666](e1e5666)) * **engine:** use ElixirSense for hover resolution ([#351](#351)) ([0e7896b](0e7896b)) * epmdless clustering ([#205](#205)) ([488d3a9](488d3a9)) * epmdless deployments ([#167](#167)) ([9cfb5cc](9cfb5cc)) * on the fly engine builds ([#24](#24)) ([51eb6f1](51eb6f1)) * use Spitfire to provide document symbols on documents with syntax errors ([#288](#288)) ([2ed7a81](2ed7a81)) * windows support ([#219](#219)) ([d0927ce](d0927ce)) * workspace folders ([#18](#18)) ([1204313](1204313)), closes [#136](#136) ### Bug Fixes * add lsp logging when failing to find an elixir executable ([#169](#169)) ([4dfba22](4dfba22)) * avoid crashing when calling `ActiveProjects.active?/1` ([#297](#297)) ([ae352b9](ae352b9)) * better handling of native<->lsp conversions ([#34](#34)) ([88dc456](88dc456)) * bring back completions for things defined in test files ([#32](#32)) ([8d7a47a](8d7a47a)) * clamp start_char for comletion prefix ([#239](#239)) ([46d3446](46d3446)) * **cli:** don't crash when there is no CLI arg provided ([#348](#348)) ([9a9140e](9a9140e)) * **cli:** show per tool version engine builds ([#301](#301)) ([399b2a0](399b2a0)) * correctly order aliases ([#322](#322)) ([fb269fa](fb269fa)) * Crash when typing english ([#742](https://github.com/elixir-lang/expert/issues/742)) ([697eac9](697eac9)), closes [#741](https://github.com/elixir-lang/expert/issues/741) * Current module not identified in defimpl ([#665](https://github.com/elixir-lang/expert/issues/665)) ([29f1055](29f1055)) * **deps:** update sourceror to 1.10.1 to fix range calculations ([#362](#362)) ([59489c7](59489c7)) * disable shell sessions when fetching the PATH ([#177](#177)) ([78236ef](78236ef)) * do not clamp character recvd from client ([#123](#123)) ([1a3b843](1a3b843)) * don't convert to_lsp twice in server specific messages ([#190](#190)) ([33bb850](33bb850)) * don't sometimes hang ([5d6bcde](5d6bcde)) * Edge case for module loading ([#738](https://github.com/elixir-lang/expert/issues/738)) ([dbbef2c](dbbef2c)) * elixir path discovery ([#248](#248)) ([f9b119c](f9b119c)) * **engine_node:** error reason not being shown ([#277](#277)) ([c7b7fa8](c7b7fa8)) * **engine:** avoid duplicate spec annotation when falling back to ElixirSense ([#410](#410)) ([5b4faee](5b4faee)) * **engine:** code lens exception when mix.exs not found ([#281](#281)) ([f9c81da](f9c81da)) * **engine:** correctly match any-struct references ([#347](#347)) ([6a92581](6a92581)) * **engine:** don't attempt search when ETS checkpoint is loading ([#308](#308)) ([438c965](438c965)) * **engine:** don't crash on hover for piped expression in curly braces in HEEx ([#350](#350)) ([f0044d6](f0044d6)) * **engine:** don't crash when calling references on an atom ([#396](#396)) ([a8badfc](a8badfc)) * **engine:** don't terminate search store on timeout ([#338](#338)) ([d91f6af](d91f6af)), closes [#303](#303) * **engine:** download Hex and Rebar only if missing ([#337](#337)) ([bc7f57e](bc7f57e)) * **engine:** handle failing build script ([#188](#188)) ([ce9ac22](ce9ac22)) * **engine:** handle matches against any struct ([#343](#343)) ([86fe8ec](86fe8ec)) * **engine:** improve entity resolution for HEEx components with curly braces ([#328](#328)) ([eff68bf](eff68bf)) * **engine:** index functions with default arguments ([#402](#402)) ([1aea6c7](1aea6c7)) * **engine:** resolve correct arity from inside ~H sigil ([#314](#314)) ([d2eacc0](d2eacc0)) * **engine:** stuck on format request ([#378](#378)) ([aa5ba2b](aa5ba2b)) * **engine:** support go to definition when function is called via __MODULE__ ([#261](#261)) ([b1d5e17](b1d5e17)) * Exclude expert dependencies from completions based on project dependencies ([3a47058](3a47058)) * **expert:** always log PATH on start ([#387](#387)) ([bfeb8a2](bfeb8a2)) * **expert:** build engine for elixir version 1.16.1 and below ([#330](#330)) ([2a2bdd9](2a2bdd9)) * **expert:** correctly handle unicode characters sent via port ([#388](#388)) ([4fe530b](4fe530b)) * **expert:** print to stderr when no transport argument provided ([#280](#280)) ([fc841e4](fc841e4)) * **expert:** save new configuration after `workspace/didChangeConfiguration` ([#282](#282)) ([b060d23](b060d23)) * **expert:** spec completions for functions with guards ([#406](#406)) ([d615858](d615858)) * fallback to packaged or system elixir ([#300](#300)) ([10262cf](10262cf)) * filter out RELEASE_ROOT from PATH instead of running a login shell ([#344](#344)) ([375391c](375391c)) * fix release-all command ([492022f](492022f)) * fixup namespacing and packaging ([#29](#29)) ([69ac8fe](69ac8fe)) * **forge:** don't crash on analysis of code with incorrect aliases ([#408](#408)) ([7c30502](7c30502)) * **forge:** handle interpolation when it starts with a special token ([#342](#342)) ([dd7b027](dd7b027)) * **forge:** improve log when Spitfire crashes ([#352](#352)) ([80900e5](80900e5)) * formatting format incorrectly when contain special character ([#252](#252)) ([b5b001b](b5b001b)) * Function definition extractor chokes on macro functions ([#682](https://github.com/elixir-lang/expert/issues/682)) ([ccf355f](ccf355f)), closes [#680](https://github.com/elixir-lang/expert/issues/680) * give proper argument to `TaskQueue.add/2` in Server.handle_message ([#791](https://github.com/elixir-lang/expert/issues/791)) ([34ee071](34ee071)) * handle missing metadata in indexer extractors ([#390](#390)) ([71c33f1](71c33f1)) * handle spitfire crashes ([#319](#319)) ([ffe360c](ffe360c)) * handle string ids in requests ([#120](#120)) ([5d6bcde](5d6bcde)) * include erlang source files when packaging engine ([580ccc8](580ccc8)) * inherited PATH pollutes project environment ([#298](#298)) ([8e1bb3d](8e1bb3d)) * interpolation_ranges/1 should work for empty interpolations ([#321](#321)) ([3ec1810](3ec1810)) * Invalid reads for requests that contain multi-byte characters ([#661](https://github.com/elixir-lang/expert/issues/661)) ([f6ca36f](f6ca36f)) * let the system figure out the elixir version for the project ([#162](#162)) ([5dacce4](5dacce4)) * log project's erl path ([#367](#367)) ([d8c81cd](d8c81cd)) * make sure asdf shims are in the PATH ([#87](#87)) ([7626f90](7626f90)) * Module suggestion was incorrect for files with multiple periods ([#705](https://github.com/elixir-lang/expert/issues/705)) ([824df66](824df66)), closes [#703](https://github.com/elixir-lang/expert/issues/703) * nil.__struct__/0 is undefined when receiving shutdown ([#250](#250)) ([849003e](849003e)) * **nix:** use eval release command ([#199](#199)) ([25f80c8](25f80c8)) * Non-string test names crash exunit indexer ([#676](https://github.com/elixir-lang/expert/issues/676)) ([29373d5](29373d5)), closes [#675](https://github.com/elixir-lang/expert/issues/675) * properly log when engine fails to initialize ([#244](#244)) ([81e1184](81e1184)) * properly set the mix env when building expert ([4caf258](4caf258)) * **release:** don't cd into rel directory before starting app ([#268](#268)) ([3b76e97](3b76e97)) * remove all usages of epmd ([#339](#339)) ([cef4adb](cef4adb)) * remove erts from extra_applications ([#202](#202)) ([aa8bd84](aa8bd84)) * remove escape sequences from PATH in fish ([#237](#237)) ([b237fd5](b237fd5)) * Resolve doesn't recognize zero-arg defs as functions ([#606](https://github.com/elixir-lang/expert/issues/606)) ([38a649c](38a649c)), closes [#604](https://github.com/elixir-lang/expert/issues/604) * resolve function delegates on hover docs ([#399](#399)) ([a3c629a](a3c629a)) * revert "feat: epmdless deployments ([#167](#167))" ([#180](#180)) ([0f66faa](0f66faa)) * revert dev server ([#48](#48)) ([9345e31](9345e31)) * sanitize node names ([#323](#323)) ([7591304](7591304)) * start projects after server is initialized ([#294](#294)) ([76d6cd5](76d6cd5)) * stop sending genlsp datastructures to engine ([#31](#31)) ([43d406f](43d406f)) * support Fish shell's space-separated PATH format ([#172](#172)) ([9803293](9803293)) * support mise et al on windows ([#304](#304)) ([3cc343f](3cc343f)) * support Nushell for PATH detection ([#272](#272)) ([8a9fd3d](8a9fd3d)) * trim any quotes wrapping PATH when elixir is managed by mise ([#82](#82)) ([d828966](d828966)) * trim PATH returned by shell ([#213](#213)) ([735199d](735199d)) * update document store on didchange even without the engine running ([#326](#326)) ([c80b72d](c80b72d)) * update gen_lsp to 0.11.3 ([#315](#315)) ([13cfee6](13cfee6)), closes [#245](#245) * update spitfire to v0.3.4 ([#373](#373)) ([6f57f16](6f57f16)) * update spitfire to v0.3.5 ([#376](#376)) ([85822fe](85822fe)) * use Calendar.UTCOnlyTimeZoneDatabase instead of project configured tz database ([#324](#324)) ([9e913f6](9e913f6)) * use correct build directory when namespacing expert ([b6540dd](b6540dd)) * use dynamic registrations and start project node asynchronously ([#30](#30)) ([e1ce165](e1ce165)) * use minimal PATH on unix instead of fully removing it ([#305](#305)) ([74da1a5](74da1a5)) * use project directory when building engine ([#203](#203)) ([c5ac441](c5ac441)) * utf8_prefix should take into account empty lines ([#164](#164)) ([16c21e0](16c21e0)) ### Miscellaneous Chores * release as 0.1.0 ([7625d3c](7625d3c)) * release as 0.1.0-rc.0 ([c98b870](c98b870)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). 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🤖 I have created a release *beep* *boop* --- [0.1.0-rc.0](expert-lsp/expert@v0.1.0...v0.1.0-rc.0) (2026-02-19) * add CLI flag handling ([expert-lsp#185](expert-lsp#185)) * add CLI flag handling ([expert-lsp#185](expert-lsp#185)) ([46713a1](expert-lsp@46713a1)) * add engine subcommands to expert ([expert-lsp#254](expert-lsp#254)) ([d7c348c](expert-lsp@d7c348c)) * add missing require code action ([expert-lsp#283](expert-lsp#283)) ([a9ee0ec](expert-lsp@a9ee0ec)) * configure Workspace Symbols to return all symbols on empty query ([expert-lsp#293](expert-lsp#293)) ([03ec5c6](expert-lsp@03ec5c6)) * create undefined function code action ([expert-lsp#287](expert-lsp#287)) ([9624b3a](expert-lsp@9624b3a)) * **engine:** hover for module attributes ([expert-lsp#329](expert-lsp#329)) ([1330370](expert-lsp@1330370)) * **engine:** indicate progress when loading checkpoint ([expert-lsp#313](expert-lsp#313)) ([fad5a0b](expert-lsp@fad5a0b)) * **engine:** support shorthand notation inside ~H sigil ([expert-lsp#278](expert-lsp#278)) ([e1e5666](expert-lsp@e1e5666)) * **engine:** use ElixirSense for hover resolution ([expert-lsp#351](expert-lsp#351)) ([0e7896b](expert-lsp@0e7896b)) * epmdless clustering ([expert-lsp#205](expert-lsp#205)) ([488d3a9](expert-lsp@488d3a9)) * epmdless deployments ([expert-lsp#167](expert-lsp#167)) ([9cfb5cc](expert-lsp@9cfb5cc)) * on the fly engine builds ([expert-lsp#24](expert-lsp#24)) ([51eb6f1](expert-lsp@51eb6f1)) * use Spitfire to provide document symbols on documents with syntax errors ([expert-lsp#288](expert-lsp#288)) ([2ed7a81](expert-lsp@2ed7a81)) * windows support ([expert-lsp#219](expert-lsp#219)) ([d0927ce](expert-lsp@d0927ce)) * workspace folders ([expert-lsp#18](expert-lsp#18)) ([1204313](expert-lsp@1204313)), closes [expert-lsp#136](expert-lsp#136) * add lsp logging when failing to find an elixir executable ([expert-lsp#169](expert-lsp#169)) ([4dfba22](expert-lsp@4dfba22)) * avoid crashing when calling `ActiveProjects.active?/1` ([expert-lsp#297](expert-lsp#297)) ([ae352b9](expert-lsp@ae352b9)) * better handling of native<->lsp conversions ([expert-lsp#34](expert-lsp#34)) ([88dc456](expert-lsp@88dc456)) * bring back completions for things defined in test files ([expert-lsp#32](expert-lsp#32)) ([8d7a47a](expert-lsp@8d7a47a)) * clamp start_char for comletion prefix ([expert-lsp#239](expert-lsp#239)) ([46d3446](expert-lsp@46d3446)) * **cli:** don't crash when there is no CLI arg provided ([expert-lsp#348](expert-lsp#348)) ([9a9140e](expert-lsp@9a9140e)) * **cli:** show per tool version engine builds ([expert-lsp#301](expert-lsp#301)) ([399b2a0](expert-lsp@399b2a0)) * correctly order aliases ([expert-lsp#322](expert-lsp#322)) ([fb269fa](expert-lsp@fb269fa)) * Crash when typing english ([#742](https://github.com/elixir-lang/expert/issues/742)) ([697eac9](expert-lsp@697eac9)), closes [#741](https://github.com/elixir-lang/expert/issues/741) * Current module not identified in defimpl ([#665](https://github.com/elixir-lang/expert/issues/665)) ([29f1055](expert-lsp@29f1055)) * **deps:** update sourceror to 1.10.1 to fix range calculations ([expert-lsp#362](expert-lsp#362)) ([59489c7](expert-lsp@59489c7)) * disable shell sessions when fetching the PATH ([expert-lsp#177](expert-lsp#177)) ([78236ef](expert-lsp@78236ef)) * do not clamp character recvd from client ([expert-lsp#123](expert-lsp#123)) ([1a3b843](expert-lsp@1a3b843)) * don't convert to_lsp twice in server specific messages ([expert-lsp#190](expert-lsp#190)) ([33bb850](expert-lsp@33bb850)) * don't sometimes hang ([5d6bcde](expert-lsp@5d6bcde)) * Edge case for module loading ([#738](https://github.com/elixir-lang/expert/issues/738)) ([dbbef2c](expert-lsp@dbbef2c)) * elixir path discovery ([expert-lsp#248](expert-lsp#248)) ([f9b119c](expert-lsp@f9b119c)) * **engine_node:** error reason not being shown ([expert-lsp#277](expert-lsp#277)) ([c7b7fa8](expert-lsp@c7b7fa8)) * **engine:** avoid duplicate spec annotation when falling back to ElixirSense ([expert-lsp#410](expert-lsp#410)) ([5b4faee](expert-lsp@5b4faee)) * **engine:** code lens exception when mix.exs not found ([expert-lsp#281](expert-lsp#281)) ([f9c81da](expert-lsp@f9c81da)) * **engine:** correctly match any-struct references ([expert-lsp#347](expert-lsp#347)) ([6a92581](expert-lsp@6a92581)) * **engine:** don't attempt search when ETS checkpoint is loading ([expert-lsp#308](expert-lsp#308)) ([438c965](expert-lsp@438c965)) * **engine:** don't crash on hover for piped expression in curly braces in HEEx ([expert-lsp#350](expert-lsp#350)) ([f0044d6](expert-lsp@f0044d6)) * **engine:** don't crash when calling references on an atom ([expert-lsp#396](expert-lsp#396)) ([a8badfc](expert-lsp@a8badfc)) * **engine:** don't terminate search store on timeout ([expert-lsp#338](expert-lsp#338)) ([d91f6af](expert-lsp@d91f6af)), closes [expert-lsp#303](expert-lsp#303) * **engine:** download Hex and Rebar only if missing ([expert-lsp#337](expert-lsp#337)) ([bc7f57e](expert-lsp@bc7f57e)) * **engine:** handle failing build script ([expert-lsp#188](expert-lsp#188)) ([ce9ac22](expert-lsp@ce9ac22)) * **engine:** handle matches against any struct ([expert-lsp#343](expert-lsp#343)) ([86fe8ec](expert-lsp@86fe8ec)) * **engine:** improve entity resolution for HEEx components with curly braces ([expert-lsp#328](expert-lsp#328)) ([eff68bf](expert-lsp@eff68bf)) * **engine:** index functions with default arguments ([expert-lsp#402](expert-lsp#402)) ([1aea6c7](expert-lsp@1aea6c7)) * **engine:** resolve correct arity from inside ~H sigil ([expert-lsp#314](expert-lsp#314)) ([d2eacc0](expert-lsp@d2eacc0)) * **engine:** stuck on format request ([expert-lsp#378](expert-lsp#378)) ([aa5ba2b](expert-lsp@aa5ba2b)) * **engine:** support go to definition when function is called via __MODULE__ ([expert-lsp#261](expert-lsp#261)) ([b1d5e17](expert-lsp@b1d5e17)) * Exclude expert dependencies from completions based on project dependencies ([3a47058](expert-lsp@3a47058)) * **expert:** always log PATH on start ([expert-lsp#387](expert-lsp#387)) ([bfeb8a2](expert-lsp@bfeb8a2)) * **expert:** build engine for elixir version 1.16.1 and below ([expert-lsp#330](expert-lsp#330)) ([2a2bdd9](expert-lsp@2a2bdd9)) * **expert:** correctly handle unicode characters sent via port ([expert-lsp#388](expert-lsp#388)) ([4fe530b](expert-lsp@4fe530b)) * **expert:** print to stderr when no transport argument provided ([expert-lsp#280](expert-lsp#280)) ([fc841e4](expert-lsp@fc841e4)) * **expert:** save new configuration after `workspace/didChangeConfiguration` ([expert-lsp#282](expert-lsp#282)) ([b060d23](expert-lsp@b060d23)) * **expert:** spec completions for functions with guards ([expert-lsp#406](expert-lsp#406)) ([d615858](expert-lsp@d615858)) * fallback to packaged or system elixir ([expert-lsp#300](expert-lsp#300)) ([10262cf](expert-lsp@10262cf)) * filter out RELEASE_ROOT from PATH instead of running a login shell ([expert-lsp#344](expert-lsp#344)) ([375391c](expert-lsp@375391c)) * fix release-all command ([492022f](expert-lsp@492022f)) * fixup namespacing and packaging ([expert-lsp#29](expert-lsp#29)) ([69ac8fe](expert-lsp@69ac8fe)) * **forge:** don't crash on analysis of code with incorrect aliases ([expert-lsp#408](expert-lsp#408)) ([7c30502](expert-lsp@7c30502)) * **forge:** handle interpolation when it starts with a special token ([expert-lsp#342](expert-lsp#342)) ([dd7b027](expert-lsp@dd7b027)) * **forge:** improve log when Spitfire crashes ([expert-lsp#352](expert-lsp#352)) ([80900e5](expert-lsp@80900e5)) * formatting format incorrectly when contain special character ([expert-lsp#252](expert-lsp#252)) ([b5b001b](expert-lsp@b5b001b)) * Function definition extractor chokes on macro functions ([#682](https://github.com/elixir-lang/expert/issues/682)) ([ccf355f](expert-lsp@ccf355f)), closes [#680](https://github.com/elixir-lang/expert/issues/680) * give proper argument to `TaskQueue.add/2` in Server.handle_message ([#791](https://github.com/elixir-lang/expert/issues/791)) ([34ee071](expert-lsp@34ee071)) * handle missing metadata in indexer extractors ([expert-lsp#390](expert-lsp#390)) ([71c33f1](expert-lsp@71c33f1)) * handle spitfire crashes ([expert-lsp#319](expert-lsp#319)) ([ffe360c](expert-lsp@ffe360c)) * handle string ids in requests ([expert-lsp#120](expert-lsp#120)) ([5d6bcde](expert-lsp@5d6bcde)) * include erlang source files when packaging engine ([580ccc8](expert-lsp@580ccc8)) * inherited PATH pollutes project environment ([expert-lsp#298](expert-lsp#298)) ([8e1bb3d](expert-lsp@8e1bb3d)) * interpolation_ranges/1 should work for empty interpolations ([expert-lsp#321](expert-lsp#321)) ([3ec1810](expert-lsp@3ec1810)) * Invalid reads for requests that contain multi-byte characters ([#661](https://github.com/elixir-lang/expert/issues/661)) ([f6ca36f](expert-lsp@f6ca36f)) * let the system figure out the elixir version for the project ([expert-lsp#162](expert-lsp#162)) ([5dacce4](expert-lsp@5dacce4)) * log project's erl path ([expert-lsp#367](expert-lsp#367)) ([d8c81cd](expert-lsp@d8c81cd)) * make sure asdf shims are in the PATH ([expert-lsp#87](expert-lsp#87)) ([7626f90](expert-lsp@7626f90)) * Module suggestion was incorrect for files with multiple periods ([#705](https://github.com/elixir-lang/expert/issues/705)) ([824df66](expert-lsp@824df66)), closes [#703](https://github.com/elixir-lang/expert/issues/703) * nil.__struct__/0 is undefined when receiving shutdown ([expert-lsp#250](expert-lsp#250)) ([849003e](expert-lsp@849003e)) * **nix:** use eval release command ([expert-lsp#199](expert-lsp#199)) ([25f80c8](expert-lsp@25f80c8)) * Non-string test names crash exunit indexer ([#676](https://github.com/elixir-lang/expert/issues/676)) ([29373d5](expert-lsp@29373d5)), closes [#675](https://github.com/elixir-lang/expert/issues/675) * properly log when engine fails to initialize ([expert-lsp#244](expert-lsp#244)) ([81e1184](expert-lsp@81e1184)) * properly set the mix env when building expert ([4caf258](expert-lsp@4caf258)) * **release:** don't cd into rel directory before starting app ([expert-lsp#268](expert-lsp#268)) ([3b76e97](expert-lsp@3b76e97)) * remove all usages of epmd ([expert-lsp#339](expert-lsp#339)) ([cef4adb](expert-lsp@cef4adb)) * remove erts from extra_applications ([expert-lsp#202](expert-lsp#202)) ([aa8bd84](expert-lsp@aa8bd84)) * remove escape sequences from PATH in fish ([expert-lsp#237](expert-lsp#237)) ([b237fd5](expert-lsp@b237fd5)) * Resolve doesn't recognize zero-arg defs as functions ([#606](https://github.com/elixir-lang/expert/issues/606)) ([38a649c](expert-lsp@38a649c)), closes [#604](https://github.com/elixir-lang/expert/issues/604) * resolve function delegates on hover docs ([expert-lsp#399](expert-lsp#399)) ([a3c629a](expert-lsp@a3c629a)) * revert "feat: epmdless deployments ([expert-lsp#167](expert-lsp#167))" ([expert-lsp#180](expert-lsp#180)) ([0f66faa](expert-lsp@0f66faa)) * revert dev server ([expert-lsp#48](expert-lsp#48)) ([9345e31](expert-lsp@9345e31)) * sanitize node names ([expert-lsp#323](expert-lsp#323)) ([7591304](expert-lsp@7591304)) * start projects after server is initialized ([expert-lsp#294](expert-lsp#294)) ([76d6cd5](expert-lsp@76d6cd5)) * stop sending genlsp datastructures to engine ([expert-lsp#31](expert-lsp#31)) ([43d406f](expert-lsp@43d406f)) * support Fish shell's space-separated PATH format ([expert-lsp#172](expert-lsp#172)) ([9803293](expert-lsp@9803293)) * support mise et al on windows ([expert-lsp#304](expert-lsp#304)) ([3cc343f](expert-lsp@3cc343f)) * support Nushell for PATH detection ([expert-lsp#272](expert-lsp#272)) ([8a9fd3d](expert-lsp@8a9fd3d)) * trim any quotes wrapping PATH when elixir is managed by mise ([expert-lsp#82](expert-lsp#82)) ([d828966](expert-lsp@d828966)) * trim PATH returned by shell ([expert-lsp#213](expert-lsp#213)) ([735199d](expert-lsp@735199d)) * update document store on didchange even without the engine running ([expert-lsp#326](expert-lsp#326)) ([c80b72d](expert-lsp@c80b72d)) * update gen_lsp to 0.11.3 ([expert-lsp#315](expert-lsp#315)) ([13cfee6](expert-lsp@13cfee6)), closes [expert-lsp#245](expert-lsp#245) * update spitfire to v0.3.4 ([expert-lsp#373](expert-lsp#373)) ([6f57f16](expert-lsp@6f57f16)) * update spitfire to v0.3.5 ([expert-lsp#376](expert-lsp#376)) ([85822fe](expert-lsp@85822fe)) * use Calendar.UTCOnlyTimeZoneDatabase instead of project configured tz database ([expert-lsp#324](expert-lsp#324)) ([9e913f6](expert-lsp@9e913f6)) * use correct build directory when namespacing expert ([b6540dd](expert-lsp@b6540dd)) * use dynamic registrations and start project node asynchronously ([expert-lsp#30](expert-lsp#30)) ([e1ce165](expert-lsp@e1ce165)) * use minimal PATH on unix instead of fully removing it ([expert-lsp#305](expert-lsp#305)) ([74da1a5](expert-lsp@74da1a5)) * use project directory when building engine ([expert-lsp#203](expert-lsp#203)) ([c5ac441](expert-lsp@c5ac441)) * utf8_prefix should take into account empty lines ([expert-lsp#164](expert-lsp#164)) ([16c21e0](expert-lsp@16c21e0)) * release as 0.1.0 ([7625d3c](expert-lsp@7625d3c)) * release as 0.1.0-rc.0 ([c98b870](expert-lsp@c98b870)) --- This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please). Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

doorgan force-pushed the doorgan/epmdless-2 branch 2 times, most recently from fccf784 to 4bffe9b Compare November 11, 2025 02:29

mhanberg reviewed Nov 11, 2025

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Comment thread apps/expert/lib/expert/engine_node.ex

doorgan force-pushed the doorgan/epmdless-2 branch from 4bffe9b to bb5c93b Compare November 11, 2025 19:14

mhanberg mentioned this pull request Nov 12, 2025

feat: cluster without epmd (epmdless) #191

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doorgan force-pushed the doorgan/epmdless-2 branch from a4d4585 to d3db3c4 Compare November 14, 2025 15:07

feat: epmdless clustering

ab64607

doorgan force-pushed the doorgan/epmdless-2 branch from d3db3c4 to ab64607 Compare November 14, 2025 15:14

doorgan marked this pull request as ready for review November 14, 2025 15:20

doorgan commented Nov 14, 2025

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docs: update epmd/distribution docs

bd3839a

josevalim reviewed Nov 15, 2025

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josevalim approved these changes Nov 15, 2025

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mhanberg approved these changes Nov 15, 2025

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fix: check for epmd on expert startup

c705958

doorgan force-pushed the doorgan/epmdless-2 branch from 4a6b4d7 to c705958 Compare November 15, 2025 17:25

doorgan merged commit 488d3a9 into main Nov 15, 2025
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doorgan deleted the doorgan/epmdless-2 branch November 15, 2025 17:31

doorgan mentioned this pull request Nov 15, 2025

Don't use EPMD. #108

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github-actions Bot mentioned this pull request Nov 12, 2025

chore(main): release 0.1.0-rc.0 #38

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This was referenced Nov 15, 2025

** System NOT running to use fully qualified hostnames ** ** Hostname 127.0.0.1 is illegal ** #176

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Error using LSP: Erlang error: {:erpc, :noconnection} #59

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FunctionClauseError on XPExpert.EngineApi.format/2 #124

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This was referenced Nov 15, 2025

textDocument/hover from Phoenix Deps doesn't show #183

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Fixing a warning is not removing the curly line #212

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doorgan restored the doorgan/epmdless-2 branch February 19, 2026 10:07

doorgan deleted the doorgan/epmdless-2 branch February 19, 2026 11:54

github-actions Bot mentioned this pull request Feb 24, 2026

chore(main): release 0.1.0-rc.1 #440

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doorgan commented Nov 10, 2025 •

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