Automatically recompile and reload Elixir code

Author: dmarcoux

.iex.exs

@@ -2,4 +2,8 @@
 # their custom IEx configuration on top of project-specific configurations.
 import_file_if_available("~/.iex.exs")
 
+# Automatically reload code changes after code has been recompiled.
+# Combine this with Mise task `watch-compile` to automatically recompile code when a file changes.
+IEx.configure(auto_reload: true)
+
 # Add project-specific configuration here...

mise.toml

@@ -1,6 +1,8 @@
 [tools]
 erlang = "28.2"
 elixir = "1.19.4-otp-28"
+# Watch for file changes
+watchexec = "2.3.2"
 
 [settings]
 # Hooks are experimental
@@ -30,6 +32,12 @@ postinstall = """
   mix local.rebar --force --if-missing
 """
 
+
+[tasks.watch-compile]
+description = "Automatically recompile Elixir code when Elixir files change"
+# It runs at most once every 5 seconds, and restarts if it's still running
+run = "watchexec --debounce 5sec --restart --clear --exts 'ex,exs' -- mix compile --force"
+
 [tasks.docker-compose-up]
 description = "Start Docker Compose services, waiting for them to be healthy before exiting"
 run = "docker compose up --wait"