I tried installing the package on a legacy site updated to 3.4.2-dev (i.e. weblinks still present).
I get these errors:
Warning
Duplicate column name 'version' SQL=ALTER TABLE `jos_weblinks` ADD COLUMN `version` int(10) unsigned NOT NULL DEFAULT '1';
Package Update: There was an error installing an extension: com_weblinks.zip
Error
Error installing package
That pack works fine, no more error.
Thanks @infograf768 !
Oops, duplicate of #40
closing.