Can’t install Core Helper 2

seems to be correct:

ls -la ~ | grep Library
drwx------@  83 sylvain  staff       2656 Sep 25 16:12 Library

fyi, I can do:

$ touch Library/toto
$ ls -l Library/toto
-rw-r--r--  1 sylvain  staff  0 Oct  3 11:45 Library/toto
$ touch Library/LaunchAgents/toto
$ ls -l Library/LaunchAgents/toto
-rw-r--r--  1 sylvain  staff  0 Oct  3 11:46 Library/LaunchAgents/toto
$ rm Library/LaunchAgents/toto
remove Library/LaunchAgents/toto? y
$ ls -l Library/LaunchAgents/toto
ls: Library/LaunchAgents/toto: No such file or directory
$ rm Library/toto
remove Library/toto? y
$ ls -l Library/toto
ls: Library/toto: No such file or directory