Setting up a lot of changes

.config/nvim/after/plugin/git-worktree.lua

@@ -0,0 +1,25 @@
+local Worktree = require("git-worktree")
+local Job = require("plenary.job")
+
+local function is_massdriver()
+  return not not (string.find(vim.loop.cwd(), "massdriver.git", 1, true))
+end
+
+Worktree.on_tree_change(function (op, metadata)
+  local compile_job = Job:new({
+    "mix", "compile"
+  })
+
+  if op == Worktree.Operations.Create and is_massdriver() then
+    local deps_job = Job:new({
+      "mix", "deps.get"
+    })
+    deps_job:and_then(compile_job)
+    deps_job:sync()
+    compile_job:wait()
+  end
+
+  if op == Worktree.Operations.Switch and is_massdriver() then
+    compile_job:start()
+  end
+end)