Create /home with the right permissions

Without this, it will be created with 700 permissions.

Changed files
+3 -2
nixos
modules
+3 -2
nixos/modules/config/users-groups.nix
···
system.activationScripts.users = stringAfter [ "stdio" ]
''
+
install -m 0700 -d /root
+
install -m 0755 -d /home
+
${pkgs.perl}/bin/perl -w \
-I${pkgs.perlPackages.FileSlurp}/lib/perl5/site_perl \
-I${pkgs.perlPackages.JSON}/lib/perl5/site_perl \
${./update-users-groups.pl} ${spec}
-
-
install -m 0700 -d /root
'';
# for backwards compatibility