first version

composer.json

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+{
+    "name": "bit/taskman_deps",
+    "description": "taskman deps utils",
+    "homepage": "https://git.bit5.ru/composer/taskman_deps",
+    "require": {
+        "php": ">=7.4"
+    },
+    "autoload": {
+        "classmap": ["deps.inc.php"]
+    }
+}

deps.inc.php

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+<?php
+namespace taskman;
+
+task('try_deps_update', ['always' => true], function()
+{
+  global $GAME_ROOT;
+
+  if(try_update_composer())
+    echo "Composer was updated...\n";
+
+  if(file_exists("$GAME_ROOT/composer/vendor/composer/autoload_real.php"))
+    include_once("$GAME_ROOT/composer/vendor/autoload.php");
+});
+
+task('deps_update', function()
+{
+  update_composer();
+});
+
+function update_composer()
+{
+  global $GAME_ROOT;
+  include("$GAME_ROOT/composer/update.php");
+}
+
+function try_update_composer()
+{
+  global $GAME_ROOT;
+
+  if(!need_to_regen("$GAME_ROOT/composer/composer.last", ["$GAME_ROOT/composer/composer.json"]))
+    return false;
+
+  update_composer();
+  touch("$GAME_ROOT/composer/composer.last");
+  return true;
+}