package-load-list

package-load-list is a variable defined in `package.el'.
Its value is

(all)

• This variable may be risky if used as a file-local variable.

Documentation:
List of packages for `package-initialize' to load.
Each element in this list should be a list (NAME VERSION), or the
symbol `all'. The symbol `all' says to load the latest installed
versions of all packages not specified by other elements.

For an element (NAME VERSION), NAME is a package name (a symbol).
VERSION should be t, a string, or nil.
If VERSION is t, the most recent version is activated.
If VERSION is a string, only that version is ever loaded.
Any other version, even if newer, is silently ignored.
Hence, the package is "held" at that version.
If VERSION is nil, the package is not loaded (it is "disabled").

You can customize this variable.

This variable was introduced, or its default value was changed, in version 24.1 of Emacs.