More on MSYS2

# Key issues

error: msys: key "4A6129F4E4B84AE46ED7F635628F528CF3053E04" is unknown
:: Import PGP key 4A6129F4E4B84AE46ED7F635628F528CF3053E04? [Y/n]
[...]
error: database 'msys' is not valid (invalid or corrupted database (PGP signature))
loading packages...
error: failed to prepare transaction (invalid or corrupted database)

This happened after newly installed.

https://www.msys2.org/news/#2020-06-29-new-packagers

# Change shell

 Quite troublesome, currently skipped