fetch tarballHEADmaster

1 files changed, 697 insertions, 0 deletions

diff --git a/src/luarocks/repos.lua b/src/luarocks/repos.lua
new file mode 100644
index 0000000..764fe3a
--- /dev/null
+++ b/src/luarocks/repos.lua
@@ -0,0 +1,697 @@
+
+--- Functions for managing the repository on disk.
+local repos = {}
+
+local fs = require("luarocks.fs")
+local path = require("luarocks.path")
+local cfg = require("luarocks.core.cfg")
+local util = require("luarocks.util")
+local dir = require("luarocks.dir")
+local manif = require("luarocks.manif")
+local vers = require("luarocks.core.vers")
+
+local unpack = unpack or table.unpack  -- luacheck: ignore 211
+
+--- Get type and name of an item (a module or a command) provided by a file.
+-- @param deploy_type string: rock manifest subtree the file comes from ("bin", "lua", or "lib").
+-- @param file_path string: path to the file relatively to deploy_type subdirectory.
+-- @return (string, string): item type ("module" or "command") and name.
+local function get_provided_item(deploy_type, file_path)
+   assert(type(deploy_type) == "string")
+   assert(type(file_path) == "string")
+   local item_type = deploy_type == "bin" and "command" or "module"
+   local item_name = item_type == "command" and file_path or path.path_to_module(file_path)
+   return item_type, item_name
+end
+
+-- Tree of files installed by a package are stored
+-- in its rock manifest. Some of these files have to
+-- be deployed to locations where Lua can load them as
+-- modules or where they can be used as commands.
+-- These files are characterised by pair
+-- (deploy_type, file_path), where deploy_type is the first
+-- component of the file path and file_path is the rest of the
+-- path. Only files with deploy_type in {"lua", "lib", "bin"}
+-- are deployed somewhere.
+-- Each deployed file provides an "item". An item is
+-- characterised by pair (item_type, item_name).
+-- item_type is "command" for files with deploy_type
+-- "bin" and "module" for deploy_type in {"lua", "lib"}.
+-- item_name is same as file_path for commands
+-- and is produced using path.path_to_module(file_path)
+-- for modules.
+
+--- Get all installed versions of a package.
+-- @param name string: a package name.
+-- @return table or nil: An array of strings listing installed
+-- versions of a package, or nil if none is available.
+local function get_installed_versions(name)
+   assert(type(name) == "string" and not name:match("/"))
+
+   local dirs = fs.list_dir(path.versions_dir(name))
+   return (dirs and #dirs > 0) and dirs or nil
+end
+
+--- Check if a package exists in a local repository.
+-- Version numbers are compared as exact string comparison.
+-- @param name string: name of package
+-- @param version string: package version in string format
+-- @return boolean: true if a package is installed,
+-- false otherwise.
+function repos.is_installed(name, version)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+
+   return fs.is_dir(path.install_dir(name, version))
+end
+
+function repos.recurse_rock_manifest_entry(entry, action)
+   assert(type(action) == "function")
+
+   if entry == nil then
+      return true
+   end
+
+   local function do_recurse_rock_manifest_entry(tree, parent_path)
+
+      for file, sub in pairs(tree) do
+         local sub_path = (parent_path and (parent_path .. "/") or "") .. file
+         local ok, err  -- luacheck: ignore 231
+
+         if type(sub) == "table" then
+            ok, err = do_recurse_rock_manifest_entry(sub, sub_path)
+         else
+            ok, err = action(sub_path)
+         end
+
+         if err then return nil, err end
+      end
+      return true
+   end
+   return do_recurse_rock_manifest_entry(entry)
+end
+
+local function store_package_data(result, rock_manifest, deploy_type)
+   if rock_manifest[deploy_type] then
+      repos.recurse_rock_manifest_entry(rock_manifest[deploy_type], function(file_path)
+         local _, item_name = get_provided_item(deploy_type, file_path)
+         result[item_name] = file_path
+         return true
+      end)
+   end
+end
+
+--- Obtain a table of modules within an installed package.
+-- @param name string: The package name; for example "luasocket"
+-- @param version string: The exact version number including revision;
+-- for example "2.0.1-1".
+-- @return table: A table of modules where keys are module names
+-- and values are file paths of files providing modules
+-- relative to "lib" or "lua" rock manifest subtree.
+-- If no modules are found or if package name or version
+-- are invalid, an empty table is returned.
+function repos.package_modules(name, version)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+
+   local result = {}
+   local rock_manifest = manif.load_rock_manifest(name, version)
+   if not rock_manifest then return result end
+   store_package_data(result, rock_manifest, "lib")
+   store_package_data(result, rock_manifest, "lua")
+   return result
+end
+
+--- Obtain a table of command-line scripts within an installed package.
+-- @param name string: The package name; for example "luasocket"
+-- @param version string: The exact version number including revision;
+-- for example "2.0.1-1".
+-- @return table: A table of commands where keys and values are command names
+-- as strings - file paths of files providing commands
+-- relative to "bin" rock manifest subtree.
+-- If no commands are found or if package name or version
+-- are invalid, an empty table is returned.
+function repos.package_commands(name, version)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+
+   local result = {}
+   local rock_manifest = manif.load_rock_manifest(name, version)
+   if not rock_manifest then return result end
+   store_package_data(result, rock_manifest, "bin")
+   return result
+end
+
+
+--- Check if a rock contains binary executables.
+-- @param name string: name of an installed rock
+-- @param version string: version of an installed rock
+-- @return boolean: returns true if rock contains platform-specific
+-- binary executables, or false if it is a pure-Lua rock.
+function repos.has_binaries(name, version)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+
+   local rock_manifest = manif.load_rock_manifest(name, version)
+   if rock_manifest and rock_manifest.bin then
+      for bin_name, md5 in pairs(rock_manifest.bin) do
+         -- TODO verify that it is the same file. If it isn't, find the actual command.
+         if fs.is_actual_binary(dir.path(cfg.deploy_bin_dir, bin_name)) then
+            return true
+         end
+      end
+   end
+   return false
+end
+
+function repos.run_hook(rockspec, hook_name)
+   assert(rockspec:type() == "rockspec")
+   assert(type(hook_name) == "string")
+
+   local hooks = rockspec.hooks
+   if not hooks then
+      return true
+   end
+
+   if cfg.hooks_enabled == false then
+      return nil, "This rockspec contains hooks, which are blocked by the 'hooks_enabled' setting in your LuaRocks configuration."
+   end
+
+   if not hooks.substituted_variables then
+      util.variable_substitutions(hooks, rockspec.variables)
+      hooks.substituted_variables = true
+   end
+   local hook = hooks[hook_name]
+   if hook then
+      util.printout(hook)
+      if not fs.execute(hook) then
+         return nil, "Failed running "..hook_name.." hook."
+      end
+   end
+   return true
+end
+
+function repos.should_wrap_bin_scripts(rockspec)
+   assert(rockspec:type() == "rockspec")
+
+   if cfg.wrap_bin_scripts ~= nil then
+      return cfg.wrap_bin_scripts
+   end
+   if rockspec.deploy and rockspec.deploy.wrap_bin_scripts == false then
+      return false
+   end
+   return true
+end
+
+local function find_suffixed(file, suffix)
+   local filenames = {file}
+   if suffix and suffix ~= "" then
+      table.insert(filenames, 1, file .. suffix)
+   end
+
+   for _, filename in ipairs(filenames) do
+      if fs.exists(filename) then
+         return filename
+      end
+   end
+
+   return nil, table.concat(filenames, ", ") .. " not found"
+end
+
+local function check_suffix(filename, suffix)
+   local suffixed_filename, err = find_suffixed(filename, suffix)
+   if not suffixed_filename then
+      return ""
+   end
+   return suffixed_filename:sub(#filename + 1)
+end
+
+-- Files can be deployed using versioned and non-versioned names.
+-- Several items with same type and name can exist if they are
+-- provided by different packages or versions. In any case
+-- item from the newest version of lexicographically smallest package
+-- is deployed using non-versioned name and others use versioned names.
+
+local function get_deploy_paths(name, version, deploy_type, file_path, repo)
+   assert(type(name) == "string")
+   assert(type(version) == "string")
+   assert(type(deploy_type) == "string")
+   assert(type(file_path) == "string")
+
+   repo = repo or cfg.root_dir
+   local deploy_dir = path["deploy_" .. deploy_type .. "_dir"](repo)
+   local non_versioned = dir.path(deploy_dir, file_path)
+   local versioned = path.versioned_name(non_versioned, deploy_dir, name, version)
+   return { nv = non_versioned, v = versioned }
+end
+
+local function check_spot_if_available(name, version, deploy_type, file_path)
+   local item_type, item_name = get_provided_item(deploy_type, file_path)
+   local cur_name, cur_version = manif.get_current_provider(item_type, item_name)
+
+   -- older versions of LuaRocks (< 3) registered "foo.init" files as "foo"
+   -- (which caused problems, so that behavior was changed). But look for that
+   -- in the manifest anyway for backward compatibility.
+   if not cur_name and deploy_type == "lua" and item_name:match("%.init$") then
+      cur_name, cur_version = manif.get_current_provider(item_type, (item_name:gsub("%.init$", "")))
+   end
+
+   if (not cur_name)
+      or (name < cur_name)
+      or (name == cur_name and (version == cur_version
+                                or vers.compare_versions(version, cur_version))) then
+      return "nv", cur_name, cur_version, item_name
+   else
+      -- Existing version has priority, deploy new version using versioned name.
+      return "v", cur_name, cur_version, item_name
+   end
+end
+
+local function backup_existing(should_backup, target)
+   if not should_backup then
+      fs.delete(target)
+      return
+   end
+   if fs.exists(target) then
+      local backup = target
+      repeat
+         backup = backup.."~"
+      until not fs.exists(backup) -- Slight race condition here, but shouldn't be a problem.
+
+      util.warning(target.." is not tracked by this installation of LuaRocks. Moving it to "..backup)
+      local move_ok, move_err = os.rename(target, backup)
+      if not move_ok then
+         return nil, move_err
+      end
+      return backup
+   end
+end
+
+local function prepare_op_install()
+   local mkdirs = {}
+   local rmdirs = {}
+
+   local function memoize_mkdir(d)
+      if mkdirs[d] then
+         return true
+      end
+      local ok, err = fs.make_dir(d)
+      if not ok then
+         return nil, err
+      end
+      mkdirs[d] = true
+      return true
+   end
+
+   local function op_install(op)
+      local ok, err = memoize_mkdir(dir.dir_name(op.dst))
+      if not ok then
+         return nil, err
+      end
+
+      local backup, err = backup_existing(op.backup, op.dst)
+      if err then
+         return nil, err
+      end
+      if backup then
+         op.backup_file = backup
+      end
+
+      ok, err = op.fn(op.src, op.dst, op.backup)
+      if not ok then
+         return nil, err
+      end
+
+      rmdirs[dir.dir_name(op.src)] = true
+      return true
+   end
+
+   local function done_op_install()
+      for d, _ in pairs(rmdirs) do
+         fs.remove_dir_tree_if_empty(d)
+      end
+   end
+
+   return op_install, done_op_install
+end
+
+local function rollback_install(op)
+   fs.delete(op.dst)
+   if op.backup_file then
+      os.rename(op.backup_file, op.dst)
+   end
+   fs.remove_dir_tree_if_empty(dir.dir_name(op.dst))
+   return true
+end
+
+local function op_rename(op)
+   if op.suffix then
+      local suffix = check_suffix(op.src, op.suffix)
+      op.src = op.src .. suffix
+      op.dst = op.dst .. suffix
+   end
+
+   if fs.exists(op.src) then
+      fs.make_dir(dir.dir_name(op.dst))
+      fs.delete(op.dst)
+      local ok, err = os.rename(op.src, op.dst)
+      fs.remove_dir_tree_if_empty(dir.dir_name(op.src))
+      return ok, err
+   else
+      return true
+   end
+end
+
+local function rollback_rename(op)
+   return op_rename({ src = op.dst, dst = op.src })
+end
+
+local function prepare_op_delete()
+   local deletes = {}
+   local rmdirs = {}
+
+   local function done_op_delete()
+      for _, f in ipairs(deletes) do
+         os.remove(f)
+      end
+
+      for d, _ in pairs(rmdirs) do
+         fs.remove_dir_tree_if_empty(d)
+      end
+   end
+
+   local function op_delete(op)
+      if op.suffix then
+         local suffix = check_suffix(op.name, op.suffix)
+         op.name = op.name .. suffix
+      end
+
+      table.insert(deletes, op.name)
+
+      rmdirs[dir.dir_name(op.name)] = true
+   end
+
+   return op_delete, done_op_delete
+end
+
+local function rollback_ops(ops, op_fn, n)
+   for i = 1, n do
+      op_fn(ops[i])
+   end
+end
+
+--- Double check that all files referenced in `rock_manifest` are installed in `repo`.
+function repos.check_everything_is_installed(name, version, rock_manifest, repo, accept_versioned)
+   local missing = {}
+   local suffix = cfg.wrapper_suffix or ""
+   for _, category in ipairs({"bin", "lua", "lib"}) do
+      if rock_manifest[category] then
+         repos.recurse_rock_manifest_entry(rock_manifest[category], function(file_path)
+            local paths = get_deploy_paths(name, version, category, file_path, repo)
+            if category == "bin" then
+               if (fs.exists(paths.nv) or fs.exists(paths.nv .. suffix))
+               or (accept_versioned and (fs.exists(paths.v) or fs.exists(paths.v .. suffix))) then
+                  return
+               end
+            else
+               if fs.exists(paths.nv) or (accept_versioned and fs.exists(paths.v)) then
+                  return
+               end
+            end
+            table.insert(missing, paths.nv)
+         end)
+      end
+   end
+   if #missing > 0 then
+      return nil, "failed deploying files. " ..
+                  "The following files were not installed:\n" ..
+                  table.concat(missing, "\n")
+   end
+   return true
+end
+
+--- Deploy a package from the rocks subdirectory.
+-- @param name string: name of package
+-- @param version string: exact package version in string format
+-- @param wrap_bin_scripts bool: whether commands written in Lua should be wrapped.
+-- @param deps_mode: string: Which trees to check dependencies for:
+-- "one" for the current default tree, "all" for all trees,
+-- "order" for all trees with priority >= the current default, "none" for no trees.
+function repos.deploy_files(name, version, wrap_bin_scripts, deps_mode)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+   assert(type(wrap_bin_scripts) == "boolean")
+
+   local rock_manifest, load_err = manif.load_rock_manifest(name, version)
+   if not rock_manifest then return nil, load_err end
+
+   local repo = cfg.root_dir
+   local renames = {}
+   local installs = {}
+
+   local function install_binary(source, target)
+      if wrap_bin_scripts and fs.is_lua(source) then
+         return fs.wrap_script(source, target, deps_mode, name, version)
+      else
+         return fs.copy_binary(source, target)
+      end
+   end
+
+   local function move_lua(source, target)
+      return fs.move(source, target, "read")
+   end
+
+   local function move_lib(source, target)
+      return fs.move(source, target, "exec")
+   end
+
+   if rock_manifest.bin then
+      local source_dir = path.bin_dir(name, version)
+      repos.recurse_rock_manifest_entry(rock_manifest.bin, function(file_path)
+         local source = dir.path(source_dir, file_path)
+         local paths = get_deploy_paths(name, version, "bin", file_path, repo)
+         local mode, cur_name, cur_version = check_spot_if_available(name, version, "bin", file_path)
+
+         if mode == "nv" and cur_name then
+            local cur_paths = get_deploy_paths(cur_name, cur_version, "bin", file_path, repo)
+            table.insert(renames, { src = cur_paths.nv, dst = cur_paths.v, suffix = cfg.wrapper_suffix })
+         end
+         local target = mode == "nv" and paths.nv or paths.v
+         local backup = name ~= cur_name or version ~= cur_version
+         if wrap_bin_scripts and fs.is_lua(source) then
+            target = target .. (cfg.wrapper_suffix or "")
+         end
+         table.insert(installs, { fn = install_binary, src = source, dst = target, backup = backup })
+      end)
+   end
+
+   if rock_manifest.lua then
+      local source_dir = path.lua_dir(name, version)
+      repos.recurse_rock_manifest_entry(rock_manifest.lua, function(file_path)
+         local source = dir.path(source_dir, file_path)
+         local paths = get_deploy_paths(name, version, "lua", file_path, repo)
+         local mode, cur_name, cur_version = check_spot_if_available(name, version, "lua", file_path)
+
+         if mode == "nv" and cur_name then
+            local cur_paths = get_deploy_paths(cur_name, cur_version, "lua", file_path, repo)
+            table.insert(renames, { src = cur_paths.nv, dst = cur_paths.v })
+            cur_paths = get_deploy_paths(cur_name, cur_version, "lib", file_path:gsub("%.lua$", "." .. cfg.lib_extension), repo)
+            table.insert(renames, { src = cur_paths.nv, dst = cur_paths.v })
+         end
+         local target = mode == "nv" and paths.nv or paths.v
+         local backup = name ~= cur_name or version ~= cur_version
+         table.insert(installs, { fn = move_lua, src = source, dst = target, backup = backup })
+      end)
+   end
+
+   if rock_manifest.lib then
+      local source_dir = path.lib_dir(name, version)
+      repos.recurse_rock_manifest_entry(rock_manifest.lib, function(file_path)
+         local source = dir.path(source_dir, file_path)
+         local paths = get_deploy_paths(name, version, "lib", file_path, repo)
+         local mode, cur_name, cur_version = check_spot_if_available(name, version, "lib", file_path)
+
+         if mode == "nv" and cur_name then
+            local cur_paths = get_deploy_paths(cur_name, cur_version, "lua", file_path:gsub("%.[^.]+$", ".lua"), repo)
+            table.insert(renames, { src = cur_paths.nv, dst = cur_paths.v })
+            cur_paths = get_deploy_paths(cur_name, cur_version, "lib", file_path, repo)
+            table.insert(renames, { src = cur_paths.nv, dst = cur_paths.v })
+         end
+         local target = mode == "nv" and paths.nv or paths.v
+         local backup = name ~= cur_name or version ~= cur_version
+         table.insert(installs, { fn = move_lib, src = source, dst = target, backup = backup })
+      end)
+   end
+
+   for i, op in ipairs(renames) do
+      local ok, err = op_rename(op)
+      if not ok then
+         rollback_ops(renames, rollback_rename, i - 1)
+         return nil, err
+      end
+   end
+   local op_install, done_op_install = prepare_op_install()
+   for i, op in ipairs(installs) do
+      local ok, err = op_install(op)
+      if not ok then
+         rollback_ops(installs, rollback_install, i - 1)
+         rollback_ops(renames, rollback_rename, #renames)
+         return nil, err
+      end
+   end
+   done_op_install()
+
+   local ok, err = repos.check_everything_is_installed(name, version, rock_manifest, repo, true)
+   if not ok then
+      return nil, err
+   end
+
+   local writer = require("luarocks.manif.writer")
+   return writer.add_to_manifest(name, version, nil, deps_mode)
+end
+
+local function add_to_double_checks(double_checks, name, version)
+   double_checks[name] = double_checks[name] or {}
+   double_checks[name][version] = true
+end
+
+local function double_check_all(double_checks, repo)
+   local errs = {}
+   for next_name, versions in pairs(double_checks) do
+      for next_version in pairs(versions) do
+         local rock_manifest, load_err = manif.load_rock_manifest(next_name, next_version)
+         local ok, err = repos.check_everything_is_installed(next_name, next_version, rock_manifest, repo, true)
+         if not ok then
+            table.insert(errs, err)
+         end
+      end
+   end
+   if next(errs) then
+      return nil, table.concat(errs, "\n")
+   end
+   return true
+end
+
+--- Delete a package from the local repository.
+-- @param name string: name of package
+-- @param version string: exact package version in string format
+-- @param deps_mode: string: Which trees to check dependencies for:
+-- "one" for the current default tree, "all" for all trees,
+-- "order" for all trees with priority >= the current default, "none" for no trees.
+-- @param quick boolean: do not try to fix the versioned name
+-- of another version that provides the same module that
+-- was deleted. This is used during 'purge', as every module
+-- will be eventually deleted.
+function repos.delete_version(name, version, deps_mode, quick)
+   assert(type(name) == "string" and not name:match("/"))
+   assert(type(version) == "string")
+   assert(type(deps_mode) == "string")
+
+   local rock_manifest, load_err = manif.load_rock_manifest(name, version)
+   if not rock_manifest then
+      if not quick then
+         local writer = require("luarocks.manif.writer")
+         writer.remove_from_manifest(name, version, nil, deps_mode)
+         return nil, "rock_manifest file not found for "..name.." "..version.." - removed entry from the manifest"
+      end
+      return nil, load_err
+   end
+
+   local repo = cfg.root_dir
+   local renames = {}
+   local deletes = {}
+
+   local double_checks = {}
+
+   if rock_manifest.bin then
+      repos.recurse_rock_manifest_entry(rock_manifest.bin, function(file_path)
+         local paths = get_deploy_paths(name, version, "bin", file_path, repo)
+         local mode, cur_name, cur_version, item_name = check_spot_if_available(name, version, "bin", file_path)
+         if mode == "v" then
+            table.insert(deletes, { name = paths.v, suffix = cfg.wrapper_suffix })
+         else
+            table.insert(deletes, { name = paths.nv, suffix = cfg.wrapper_suffix })
+
+            local next_name, next_version = manif.get_next_provider("command", item_name)
+            if next_name then
+               add_to_double_checks(double_checks, next_name, next_version)
+               local next_paths = get_deploy_paths(next_name, next_version, "bin", file_path, repo)
+               table.insert(renames, { src = next_paths.v, dst = next_paths.nv, suffix = cfg.wrapper_suffix })
+            end
+         end
+      end)
+   end
+
+   if rock_manifest.lua then
+      repos.recurse_rock_manifest_entry(rock_manifest.lua, function(file_path)
+         local paths = get_deploy_paths(name, version, "lua", file_path, repo)
+         local mode, cur_name, cur_version, item_name = check_spot_if_available(name, version, "lua", file_path)
+         if mode == "v" then
+            table.insert(deletes, { name = paths.v })
+         else
+            table.insert(deletes, { name = paths.nv })
+
+            local next_name, next_version = manif.get_next_provider("module", item_name)
+            if next_name then
+               add_to_double_checks(double_checks, next_name, next_version)
+               local next_lua_paths = get_deploy_paths(next_name, next_version, "lua", file_path, repo)
+               table.insert(renames, { src = next_lua_paths.v, dst = next_lua_paths.nv })
+               local next_lib_paths = get_deploy_paths(next_name, next_version, "lib", file_path:gsub("%.[^.]+$", ".lua"), repo)
+               table.insert(renames, { src = next_lib_paths.v, dst = next_lib_paths.nv })
+            end
+         end
+      end)
+   end
+
+   if rock_manifest.lib then
+      repos.recurse_rock_manifest_entry(rock_manifest.lib, function(file_path)
+         local paths = get_deploy_paths(name, version, "lib", file_path, repo)
+         local mode, cur_name, cur_version, item_name = check_spot_if_available(name, version, "lib", file_path)
+         if mode == "v" then
+            table.insert(deletes, { name = paths.v })
+         else
+            table.insert(deletes, { name = paths.nv })
+
+            local next_name, next_version = manif.get_next_provider("module", item_name)
+            if next_name then
+               add_to_double_checks(double_checks, next_name, next_version)
+               local next_lua_paths = get_deploy_paths(next_name, next_version, "lua", file_path:gsub("%.[^.]+$", ".lua"), repo)
+               table.insert(renames, { src = next_lua_paths.v, dst = next_lua_paths.nv })
+               local next_lib_paths = get_deploy_paths(next_name, next_version, "lib", file_path, repo)
+               table.insert(renames, { src = next_lib_paths.v, dst = next_lib_paths.nv })
+            end
+         end
+      end)
+   end
+
+   local op_delete, done_op_delete = prepare_op_delete()
+   for _, op in ipairs(deletes) do
+      op_delete(op)
+   end
+   done_op_delete()
+
+   if not quick then
+      for _, op in ipairs(renames) do
+         op_rename(op)
+      end
+
+      local ok, err = double_check_all(double_checks, repo)
+      if not ok then
+         return nil, err
+      end
+   end
+
+   fs.delete(path.install_dir(name, version))
+   if not get_installed_versions(name) then
+      fs.delete(dir.path(cfg.rocks_dir, name))
+   end
+
+   if quick then
+      return true
+   end
+
+   local writer = require("luarocks.manif.writer")
+   return writer.remove_from_manifest(name, version, nil, deps_mode)
+end
+
+return repos