disabled packages were still getting force loaded

unkown options

doc/dep.txt

@@ -15,6 +15,7 @@ Table of Contents                                      *dep-table-of-contents*
 6. Examples                                                     |dep-examples|
   - Declaring Dependencies               |dep-examples-declaring-dependencies|
   - Modules                                             |dep-examples-modules|
+  - Lazy Loading                                   |dep-examples-lazy-loading|
 7. Credits & License                                             |dep-credits|
 
 ==============================================================================
@@ -216,10 +217,17 @@ is equivalent to the following:
   load:cmd("Command", {
     callback = function()
       load:cleanup()
+
+      if (rerun) then
+	vim.cmd("Command")
+      end
     end
   })
 <
-If you wish the second argument may be completely ommitted.
+If you wish the second argument may be completely ommitted. Note the inclusion
+of a `rerun` field, this is a parameter which may be passed into the options table
+to re-run the binding after loading the package. You may choose to disable the
+built-in logic by passing false.
 
 ------------------------------------------------------------------------------
 LOAD:AUTO                                           *dep-lazy-loading-api-auto*
@@ -293,6 +301,27 @@ into the options table to re-run the binding after loading the package. You
 may choose to include your own logic by passing a function to the `rerun`
 field or disable the built-in logic by passing false.
 
+------------------------------------------------------------------------------
+LOAD:PLUGIN                                      *dep-lazy-loading-api-plugin*
+
+`load:plugin` is a function which allows you to specify another plugin for the
+package to load after. It takes two arguments: `plugin` which is the name of
+the plugin you want to follow like: 'user/package'. The second argument is
+`opts` which is a table with one option: `callback` which is a function. The
+following is an example:
+>lua
+  load:plugin("user/package", {})
+<
+Which is the same as:
+>lua
+  load:plugin("user/package", {
+    callback = function()
+      self:cleanup()
+    end
+  })
+<
+When 'user/package' is already loaded the `callback` is called immediately.
+
 LAZY LOADING API SHORTHANDS                  *dep-lazy-loading-api-shorthands*
 
 On occasion you may wish to only define one condition for the package to load.
@@ -589,6 +618,50 @@ declared in that module.
     }
   }
 <
+LAZY LOADING                                       *dep-examples-lazy-loading*
+
+Lazy loading is a very complicated topic, and therefore this part of the
+documentation assumes you have experience with regular package managment.
+Let's go over loading order, and how the lazy loader determines what needs to
+be loaded.
+
+Let's say we have the following spec:
+>lua
+  { "user/package",
+    lazy = true,
+    deps = "user/dependent"
+  }
+<
+This is the same as the following:
+>lua
+  { "user/package",
+    lazy = true
+  },
+
+  { "user/dependent",
+    reqs = "user/package",
+    lazy = require("dep.lazy.loader.short").plugin("user/package")
+  }
+<
+What you're seeing is implicit lazy loading. By default dep will lazy load
+dependents who are explicitly defined in the spec. Now if we we're to modify
+'user/dependent' like so:
+>lua
+  { "user/package",
+    lazy = true
+  },
+
+  { "user/dependent",
+    reqs = "user/package",
+    lazy = function(load)
+      load:plugin("user/package")
+      load:cmd("LoadDependent")
+    end
+  }
+<
+If we were to call the command `:LoadDependent` it would first load
+'user/package', and then load 'user/dependent'.
+
 ==============================================================================
 7. Credits & License                                             *dep-credits*
 

lua/dep/lazy/loader/init.lua

@@ -1,10 +1,12 @@
 local logger = require('dep.log')
+local packager = require('dep.package')
 
 ---@class lazy_loader
 ---@field load function the function to load the plugin
----@field command_ids table the commands that have been registered
+---@field command_ids string[] the commands that have been registered
----@field auto_ids table the auto commands that have been registered
+---@field auto_ids number[] the auto commands that have been registered
----@field keybind_ids table the keybinds that have been registered
+---@field keybind_ids table[] the keybinds that have been registered
+---@field plugin_ids table[] the plugins that have been registered
 local lazy_loader = {}
 
 --- create a new instance of lazy
@@ -16,6 +18,7 @@ function lazy_loader:new()
   o.command_ids = {}
   o.auto_ids = {}
   o.keybind_ids = {}
+  o.plugin_ids = {}
 
   self.__index = self
 
@@ -34,6 +37,11 @@ end
 function lazy_loader:cmd(name, opts)
   opts = opts or {}
 
+  -- move the rerun arg to a seperate variable because keymap.set doesn't like
+  -- options it doesn't know of
+  local rerun = opts["rerun"] or true
+  opts['rerun'] = nil
+
   -- load the plugin on completion
   if not opts["complete"] then
     opts["complete"] = function(_, line, _)
@@ -49,6 +57,11 @@ function lazy_loader:cmd(name, opts)
 
   vim.api.nvim_create_user_command(name, opts['callback'] or function(_)
     self:cleanup()
+
+    -- attempt to rerun the command
+    if not rerun then
+      pcall(vim.cmd, name)
+    end
   end, opts)
 
   table.insert(self.command_ids, name)
@@ -71,7 +84,7 @@ end
 --- create an auto command which will trigger on filetype
 ---@param filetype string filetype to register the auto on
 function lazy_loader:ft(filetype)
-  lazy_loader:auto("FileType", {
+  self:auto("FileType", {
     pattern = filetype
   })
 end
@@ -107,29 +120,53 @@ function lazy_loader:keymap(mode, bind, opts)
   table.insert(self.keybind_ids, { ['mode'] = mode, ['bind'] = bind })
 end
 
+--- load a plugin when another plugin loads
+---@param plugin string plugin name
+---@param opts table? options
+function lazy_loader:plugin(plugin, opts)
+  opts = opts or {}
+  opts["callback"] = opts["callback"] or function()
+    self:cleanup()
+  end
+
+  if packager.get_packages()[plugin].loaded then
+    opts["callback"]()
+  else
+    local on_load = packager.get_packages()[plugin].on_load
+    local on_load_idx = #on_load + 1
+    on_load[on_load_idx] = opts["callback"]
+
+    table.insert(self.plugin_ids, { plugin, on_load_idx })
+  end
+end
+
 --- cleanup all the callbacks, and load the plugin
 function lazy_loader:cleanup()
-    -- cleanup user commands
+  -- cleanup user commands
-  for _, command_id in pairs(self.command_ids) do
+  for _, command_id in ipairs(self.command_ids) do
     local ok, err = pcall(vim.api.nvim_del_user_command, command_id)
     if not ok then
       logger:log("lazy", err or "failed to delete user command")
     end
   end
   -- cleanup auto commands
-  for _, auto_id in pairs(self.auto_ids) do
+  for _, auto_id in ipairs(self.auto_ids) do
     local ok, err = pcall(vim.api.nvim_del_autocmd, auto_id)
     if not ok then
       logger:log("lazy", err or "failed to delete auto command")
     end
   end
   -- cleanup keymaps
-  for _, keybind_id in pairs(self.keybind_ids) do
+  for _, keybind_id in ipairs(self.keybind_ids) do
     local ok, err = pcall(vim.keymap.del, keybind_id.mode, keybind_id.bind, {})
     if not ok then
       logger:log("lazy", err or "failed to delete keymap")
     end
   end
+  -- cleanup plugins
+  for _, plugin_id in ipairs(self.plugin_ids) do
+    table.remove(packager.get_packages()[plugin_id[1]].on_load, plugin_id[2])
+  end
   -- load the plugin
   self:load()
 end

lua/dep/lazy/loader/short.lua

@@ -59,4 +59,14 @@ function short.keymap(mode, bind, opts)
   end
 end
 
+--- create a single plugin load event for when another plugin loads
+---@param plugin string plugin name
+---@param opts table? options
+---@return function callback
+function short.plugin(plugin, opts)
+  return function(load)
+    load:plugin(plugin, opts)
+  end
+end
+
 return short

lua/dep/package.lua

@@ -165,18 +165,10 @@ function package:new(spec, overrides)
       -- if the child package is lazy loaded make sure the child package
       -- is only loaded when the parent package has finished loading
       if o.lazy then
-        table.insert(o.on_load, function()
-          local ok = o:loadtree(true)
-          if not ok then
-            logger:log("lazy",
-              "failed to run loadtree for %s, some packages may not be loaded",
-              o.id)
-          end
-        end)
-
         -- tell the dep that it's gonna be lazy
         pkg.lazy = true
-        table.insert(pkg.lazy_load, function(_) end)
+        table.insert(pkg.lazy_load,
+          require("dep.lazy.loader.short").plugin(id))
       end
     end
   end
@@ -252,6 +244,10 @@ function package:ensureadded(force)
   --- load a package
   ---@param pkg package
   local function loadpkg(pkg)
+    if not self.enabled then
+      return false
+    end
+
     -- make sure to load the dependencies first
     for _, p in pairs(pkg.requirements) do
       if not p.loaded then
@@ -316,7 +312,7 @@ function package:ensureadded(force)
       if load_cond ~= true then
         local ok, err = pcall(load_cond, l)
         if not ok then
-          logger:log("lazy", "failed to register load conditions for '%s': %s",
+          logger:log("error", "failed to register lazy load conditions for '%s': %s",
             self.name, err)
         end
       end

lua/dep/ui/format.lua

@@ -20,16 +20,29 @@ end
 ---@param log_line string log line
 ---@return chunk[] chunks
 function format.log_line(log_line)
-  local log_time = string.sub( log_line, string.find(log_line, "%[") + 1,
+  -- make sure we don't do operations on nil values
-    string.find(log_line, "%]") - 1)
+  if not log_line or log_line == "" then
-  local colon = string.find(log_line, ":", 11)
+    return {}
-  local log_path = string.sub(log_line, string.find(log_line, "%]") + 2,
+  end
-    colon - 1)
+
-  local log_path_ln = string.sub(log_line, colon + 1,
+  -- error on any nil values, this should prevent us from parsing an incorrectly
-    string.find(log_line, ":", colon + 1) - 1)
+  -- formatted log line
-  local level = string.sub(log_line, string.find(log_line, "%(") + 1,
+  local log_time, colon, log_path, log_path_ln, level, rest
-    string.find(log_line, "%)") - 1)
+  local ok = pcall(function()
-  local rest = string.sub(log_line, string.find(log_line, "%)") + 2)
+    log_time = string.sub(log_line, string.find(log_line, "%[") + 1,
+      string.find(log_line, "%]") - 1)
+    colon = string.find(log_line, ":", 11)
+    log_path = string.sub(log_line, string.find(log_line, "%]") + 2,
+      colon - 1)
+    log_path_ln = string.sub(log_line, colon + 1,
+      string.find(log_line, ":", colon + 1) - 1)
+    level = string.sub(log_line, string.find(log_line, "%(") + 1,
+      string.find(log_line, "%)") - 1)
+    rest = string.sub(log_line, string.find(log_line, "%)") + 2)
+  end)
+  if not ok then
+    return {}
+  end
 
   return {
     { "[", "" },

tests/dep_spec.lua

@@ -17,6 +17,14 @@ describe("ui log formatting", function()
       },
       dep_ui_format.log_line("[11:22:33] file.lua:1:(vim) some fancy message")
     )
+
+    -- malformed log line
+    assert.same({},
+      dep_ui_format.log_line("11:22:33] file.lua:1:(vim) some fancy message"))
+
+    -- test nil values
+    assert.same({}, dep_ui_format.log_line(""))
+    assert.same({}, dep_ui_format.log_line(nil))
   end)
 end)