PoC package with Mix.install

.github/workflows/main.yml

@@ -36,6 +36,7 @@ jobs:
         run: |
           cd elixir-ls
           mix deps.get
+          MIX_ENV=prod mix compile
       - name: Resolve vscode-elixir-ls dependencies
         run: |
           npm install

.github/workflows/release.yml

@@ -9,16 +9,9 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
-        with:
-          submodules: 'true'
       - uses: actions/setup-node@v3
         with:
           node-version: 16
-      - name: Setup Elixir
-        uses: erlef/setup-beam@v1
-        with:
-          elixir-version: 1.12.x
-          otp-version: 22.x
       - name: install jq
         run: |
           sudo apt-get install jq

.gitignore

@@ -2,6 +2,3 @@ out
 node_modules
 .vscode-test/
 *.vsix
-
-# We store the build artifacts from ElixirLS here
-/elixir-ls-release

elixir-ls-release/debugger.bat

@@ -0,0 +1,10 @@
+@echo off & setlocal enabledelayedexpansion
+
+SET ELS_MODE=debugger
+IF EXIST "%APPDATA%\elixir_ls\setup.bat" (
+    CALL "%APPDATA%\elixir_ls\setup.bat" > nul
+)
+
+SET MIX_ENV=prod
+elixir "%~dp0\quiet_install.exs" > nul
+elixir --erl "+sbwt none +sbwtdcpu none +sbwtdio none" "%~dp0\debugger.exs"

elixir-ls-release/debugger.exs

@@ -0,0 +1,21 @@
+# Mix.install([
+#   {:elixir_ls, github: "elixir-lsp/elixir-ls", ref: "7f7ba8ac7ad518945f7622369d13c16f48568b30"}
+# ])
+
+Mix.install(
+  [
+    {:elixir_ls, path: "#{__DIR__}/../elixir-ls"},
+  ],
+  config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+  lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+)
+
+# Mix.install(
+#   [
+#     {:elixir_ls_debugger, path: "#{__DIR__}/../elixir-ls/apps/elixir_ls_debugger"},
+#   ],
+#   config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+#   lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+# )
+
+ElixirLS.Debugger.CLI.main()

elixir-ls-release/debugger.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# Launches the debugger. This script must be in the same directory as mix install launch script.
+
+readlink_f () {
+  cd "$(dirname "$1")" > /dev/null || exit 1
+  filename="$(basename "$1")"
+  if [ -h "$filename" ]; then
+    readlink_f "$(readlink "$filename")"
+  else
+    echo "$(pwd -P)/$filename"
+  fi
+}
+
+if [ -z "${ELS_INSTALL_PREFIX}" ]; then
+  dir="$(dirname "$(readlink_f "$0")")"
+else
+  dir=${ELS_INSTALL_PREFIX}
+fi
+
+export ELS_MODE=debugger
+exec "${dir}/launch.sh"

elixir-ls-release/language_server.bat

@@ -0,0 +1,10 @@
+@echo off & setlocal enabledelayedexpansion
+
+SET ELS_MODE=language_server
+IF EXIST "%APPDATA%\elixir_ls\setup.bat" (
+    CALL "%APPDATA%\elixir_ls\setup.bat" > nul
+)
+
+SET MIX_ENV=prod
+elixir "%~dp0\quiet_install.exs" > nul
+elixir --erl "+sbwt none +sbwtdcpu none +sbwtdio none" "%~dp0\language_server.exs"

elixir-ls-release/language_server.exs

@@ -0,0 +1,21 @@
+# Mix.install([
+#   {:elixir_ls, github: "elixir-lsp/elixir-ls", ref: "7f7ba8ac7ad518945f7622369d13c16f48568b30"}
+# ])
+
+Mix.install(
+  [
+    {:elixir_ls, path: "#{__DIR__}/../elixir-ls"},
+  ],
+  config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+  lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+)
+
+# Mix.install(
+#   [
+#     {:language_server, path: "#{__DIR__}/../elixir-ls/apps/language_server"},
+#   ],
+#   config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+#   lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+# )
+
+ElixirLS.LanguageServer.CLI.main()

elixir-ls-release/language_server.sh

@@ -0,0 +1,21 @@
+#!/bin/sh
+# Launches the language server. This script must be in the same directory as mix install launch script.
+
+readlink_f () {
+  cd "$(dirname "$1")" > /dev/null || exit 1
+  filename="$(basename "$1")"
+  if [ -h "$filename" ]; then
+    readlink_f "$(readlink "$filename")"
+  else
+    echo "$(pwd -P)/$filename"
+  fi
+}
+
+if [ -z "${ELS_INSTALL_PREFIX}" ]; then
+  dir="$(dirname "$(readlink_f "$0")")"
+else
+  dir=${ELS_INSTALL_PREFIX}
+fi
+
+export ELS_MODE=language_server
+exec "${dir}/launch.sh"

elixir-ls-release/launch.sh

@@ -0,0 +1,76 @@
+#!/bin/sh
+# Actual launcher. This does the hard work of figuring out the best way
+# to launch the language server or the debugger.
+#
+
+# Running this script is a one-time action per project launch, so we opt for
+# code simplicity instead of performance. Hence some potentially redundant
+# moves here.
+
+# First order of business, see whether we can setup asdf-vm
+
+did_relaunch=$1
+
+ASDF_DIR=${ASDF_DIR:-"${HOME}/.asdf"}
+
+asdf_vm="${ASDF_DIR}/asdf.sh"
+if test -f "${asdf_vm}"
+then
+  # asdf-vm does not support the plain posix shell. Figure out
+  # which one we need and relaunch ourselves with that.
+  case "${did_relaunch}" in
+    "")
+      if which bash >/dev/null
+      then
+        exec "$(which bash)" "$0" relaunch
+      elif which zsh >/dev/null
+      then
+        exec "$(which zsh)" "$0" relaunch
+      fi
+      ;;
+    *)
+      # We have an arg2, so we got relaunched. Therefore, we're running in a
+      # shell that supports asdf-vm.
+      .  "${asdf_vm}"
+      ;;
+  esac
+fi
+
+# In case that people want to tweak the path, which Elixir to use, or
+# whatever prior to launching the language server or the debugger, we
+# give them the chance here. ELS_MODE will be set for
+# the really complex stuff. Use an XDG compliant path.
+
+els_setup="${XDG_CONFIG_HOME:-$HOME/.config}/elixir_ls/setup.sh"
+if test -f "${els_setup}"
+then
+  .  "${els_setup}"
+fi
+
+# Setup done. Make sure that we have the proper actual path to this
+# script so we can correctly configure the Erlang library path to
+# include the local .ez files, and then do what we were asked to do.
+
+readlink_f () {
+  cd "$(dirname "$1")" > /dev/null || exit 1
+  filename="$(basename "$1")"
+  if [ -h "$filename" ]; then
+    readlink_f "$(readlink "$filename")"
+  else
+    echo "$(pwd -P)/$filename"
+  fi
+}
+
+if [ -z "${ELS_INSTALL_PREFIX}" ]; then
+  SCRIPT=$(readlink_f "$0")
+  SCRIPTPATH=$(dirname "$SCRIPT")
+else
+  SCRIPTPATH=${ELS_INSTALL_PREFIX}
+fi
+
+export MIX_ENV=prod
+# Mix.install prints to stdout and stderr and reads from stdin
+# we need to make sure it doesn't interfere with LSP/DAP
+elixir "$SCRIPTPATH/quiet_install.exs" 1> /dev/null 2> /dev/null < /dev/zero || exit 1
+
+exec elixir --erl "+sbwt none +sbwtdcpu none +sbwtdio none" "$SCRIPTPATH/$ELS_MODE.exs"

elixir-ls-release/quiet_install.exs

@@ -0,0 +1,19 @@
+# Mix.install([
+#   {:elixir_ls, github: "elixir-lsp/elixir-ls", ref: "7f7ba8ac7ad518945f7622369d13c16f48568b30"}
+# ])
+
+Mix.install(
+  [
+    {:elixir_ls, path: "#{__DIR__}/../elixir-ls"},
+  ],
+  config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+  lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+)
+
+# Mix.install(
+#   [
+#     {:language_server, path: "#{__DIR__}/../elixir-ls/apps/language_server"},
+#   ],
+#   config_path: "#{__DIR__}/../elixir-ls/config/config.exs",
+#   lockfile: "#{__DIR__}/../elixir-ls/mix.lock"
+# )

package.json

@@ -550,9 +550,9 @@
     ]
   },
   "scripts": {
-    "vscode:prepublish": "./prepublish.bash",
-    "compile": "tsc -b && cd elixir-ls && MIX_ENV=prod mix elixir_ls.release -o ../elixir-ls-release",
-    "watch": "cd elixir-ls && MIX_ENV=prod mix elixir_ls.release -o ../elixir-ls-release && cd .. && tsc -b -w",
+    "vscode:prepublish": "npm run compile",
+    "compile": "tsc -b",
+    "watch": "tsc -b -w",
     "update-vscode": "node ./node_modules/vscode/bin/install",
     "test": "node ./out/test/runTest.js",
     "lint": "eslint . --ext .js,.ts",

src/extension.ts

@@ -12,6 +12,7 @@ import * as path from "path";
 
 import { workspace, ExtensionContext, WorkspaceFolder, Uri } from "vscode";
 import {
+  Executable,
   ExecuteCommandParams,
   LanguageClient,
   LanguageClientOptions,
@@ -453,7 +454,7 @@ function startClient(
     .getConfiguration("elixirLS", clientOptions.workspaceFolder)
     .get("languageServerOverridePath")!;
 
-  const serverOpts = {
+  const serverOpts: Executable = {
     command: lsOverridePath
       ? path.join(lsOverridePath, command)
       : context.asAbsolutePath("./elixir-ls-release/" + command),