Custom deactivation/activation hooks from a WordPress plugin that can be called from some other hooks

main-plugin-file.php

<?php
// Custom deactivation/activation hooks.
$activation_hook   = 'plugin_prefix_on_activation';
$deactivation_hook = 'plugin_prefix_on_deactivation';
register_activation_hook( __FILE__, function () use ( $activation_hook ) {
	add_option( $activation_hook, 'yes' );
} );
register_deactivation_hook( __FILE__, function () use ( $deactivation_hook ) {
	do_action( $deactivation_hook );
} );
add_action( 'admin_init', function () use ( $activation_hook ) {
	if ( is_admin() && get_option( $activation_hook ) === 'yes' ) {
		delete_option( $activation_hook );
		do_action( $activation_hook );
	}
} );

The custom activation hooks can be called from some other hooks like plugins_loaded or init. Example:

add_action( 'plugins_loaded', function () {
	add_action( 'plugin_prefix_on_activation', function () {
		error_log( 'plugin activated' );
	} );
	add_action( 'plugin_prefix_on_deactivation', function () {
		error_log( 'plugin deactivated' );
	} );
} );