bug#46297: nix-service-configuration is missing the default /bin/sh

[pukkamustard]

I ran into the same issue and agree with your conclusion that we 
may not need build-sandbox-paths.

Attached a patch that removes the `build-sandbox-paths` option. 
This causes nix to use the default value which seems to work fine.

0001-services-nix-Remove-build-sandbox-items-configuratio.patch
Description: Text Data

CC: Oleg Pykhalov who seems to have worked on this.

Thanks,
pukkamustard