feat(pack): rebuild plugins on :PluginUpdate

lua/pack.lua

@@ -130,12 +130,45 @@ local watcher = nil
 ---@type ow.Util.KeyedDebounceHandle<string>?
 local on_change_handle = nil
 
+---@alias ow.Pack.Hook fun(ev: ow.Pack.Event.Data)
+
+---@type table<string, ow.Pack.Hook>
+local hooks = {}
+
 ---@class ow.Pack
 ---@field plugins ow.Pack.Plugin[]
 local M = {
     plugins = {},
 }
 
+---@param name string
+---@param fn ow.Pack.Hook
+function M.register_hook(name, fn)
+    hooks[name] = fn
+end
+
+local function setup_event_listener()
+    local group =
+        vim.api.nvim_create_augroup("ow.Pack.events", { clear = true })
+    vim.api.nvim_create_autocmd("PackChanged", {
+        group = group,
+        ---@param ev ow.Pack.Event
+        callback = function(ev)
+            local name = ev.data.spec.name
+            if not name then
+                return
+            end
+            if ev.data.kind ~= "install" and ev.data.kind ~= "update" then
+                return
+            end
+            local hook = hooks[name]
+            if hook then
+                hook(ev.data)
+            end
+        end,
+    })
+end
+
 ---@return string[]
 function M.get_names()
     return vim.tbl_map(function(p)
@@ -277,11 +310,25 @@ function M.setup(specs)
     end)
 
     for _, plugin in ipairs(M.plugins) do
-        if plugin.build and changed[plugin.name] then
-            run_build(plugin)
+        if plugin.build then
+            if changed[plugin.name] then
+                run_build(plugin)
+            end
+            M.register_hook(plugin.name, function(ev)
+                plugin.path = ev.path
+                run_build(plugin)
+            end)
         end
         load(plugin.name, false)
     end
+
+    setup_event_listener()
+end
+
+---@param names? string[]
+---@param opts? table
+function M.update(names, opts)
+    vim.pack.update(names, opts)
 end
 
 return M