feat: added support for plugin packages by lazy, rockspec and packspec

lua/lazy/pkg/rockspec.lua

@@ -0,0 +1,55 @@
+--# selene:allow(incorrect_standard_library_use)
+
+local Util = require("lazy.core.util")
+
+local M = {}
+
+M.dev_suffix = "-scm-1.rockspec"
+M.skip = { "lua" }
+
+---@class RockSpec
+---@field rockspec_format string
+---@field package string
+---@field version string
+---@field dependencies string[]
+
+---@param plugin LazyPlugin
+---@return LazyPkg?
+function M.get(plugin)
+  local rockspec_file ---@type string?
+  Util.ls(plugin.dir, function(path, name, t)
+    if t == "file" and name:sub(-#M.dev_suffix) == M.dev_suffix then
+      rockspec_file = path
+      return false
+    end
+  end)
+
+  if not rockspec_file then
+    return
+  end
+
+  ---@type RockSpec?
+  local rockspec = {}
+  local ret, err = loadfile(rockspec_file, "t", rockspec)
+  if not ret then
+    error(err)
+  end
+  ret()
+  return rockspec
+      and rockspec.package
+      and {
+        source = "rockspec",
+        file = rockspec_file,
+        spec = {
+          dir = plugin.dir,
+          url = plugin.url,
+          rocks = vim.tbl_filter(function(dep)
+            local name = dep:gsub("%s.*", "")
+            return not vim.tbl_contains(M.skip, name)
+          end, rockspec.dependencies),
+        },
+      }
+    or nil
+end
+
+return M