out of the box, umask should default to something more typical.
- bug#22650: guixSD default umask is 0000 myglc2
- bug#22650: guixSD default umask is 0000 Ludovic Courtès
- bug#22650: guixSD default umask is 0000 myglc2
- bug#22650: guixSD default umask is 0000 Ludovic Courtès
- bug#22650: guixSD default umask is 0000 myglc2
- bug#22650: guixSD default umask is 0000 Ludovic Courtès
- bug#22650: guixSD default umask is ... 宋文武
- bug#22650: guixSD default umask... Alex Kost
- bug#22650: guixSD default u... Ludovic Courtès
