teslamate: use precompiled Elixir (#16561)

ct/teslamate.sh

@@ -35,6 +35,16 @@ function update_script() {
     systemctl stop teslamate
     msg_ok "Stopped Service"
 
+    if [[ ! -d /opt/elixir ]]; then
+      msg_info "Migrating to newer Elixir (required by TeslaMate)"
+      $STD apt remove -y elixir
+      fetch_and_deploy_gh_release "elixir" "elixir-lang/elixir" "prebuild" "latest" "/opt/elixir" "elixir-otp-27.zip"
+      for bin in elixir elixirc iex mix; do
+        ln -sf "/opt/elixir/bin/$bin" "/usr/local/bin/$bin"
+      done
+      msg_ok "Migrated to newer Elixir"
+    fi
+
     CLEAN_INSTALL=1 fetch_and_deploy_gh_release "teslamate" "teslamate-org/teslamate" "tarball"
 
     msg_info "Building TeslaMate (Patience)"

install/teslamate-install.sh

@@ -19,7 +19,6 @@ $STD apt install -y \
   erlang \
   erlang-dev \
   erlang-syntax-tools \
-  elixir \
   mosquitto \
   locales
 sed -i 's/^# *\(en_US.UTF-8\)/\1/' /etc/locale.gen
@@ -27,6 +26,11 @@ $STD locale-gen
 systemctl enable -q --now mosquitto
 msg_ok "Installed Dependencies"
 
+fetch_and_deploy_gh_release "elixir" "elixir-lang/elixir" "prebuild" "latest" "/opt/elixir" "elixir-otp-27.zip"
+for bin in elixir elixirc iex mix; do
+  ln -sf "/opt/elixir/bin/$bin" "/usr/local/bin/$bin"
+done
+
 PG_VERSION="17" setup_postgresql
 PG_DB_NAME="teslamate" PG_DB_USER="teslamate" PG_DB_GRANT_SUPERUSER="true" setup_postgresql_db
 NODE_VERSION="22" setup_nodejs