Hi, Marius:

The problem is not reproduced after I did another 'guix pull'. I attached the information:

1.
root@guix ~# guix describe
Generation 4 May 04 2020 06:21:35 (current)
  guix c563f88
    repository URL: https://git.savannah.gnu.org/git/guix.git
    branch: master
    commit: c563f8887db23241922fabf62a4da5d1526a644f

2. config.scm is attached.


________________________________
From: Marius Bakke
Sent: Sunday, May 3, 2020 11:16 PM
To: wensheng xie; 41051@debbugs.gnu.org
Subject: Re: bug#41051: [guix-1.1.0] guix system failed

Thanks for the report!

wensheng xie <xiewensheng@hotmail.com> writes:

> The error:
>
> root@guix ~# guix system reconfigure /etc/config.scm
> The following derivation will be built:
>    /gnu/store/g26kkrfd49y5wcz57x0xgkh97w997kmb-grub.cfg.drv
> building /gnu/store/g26kkrfd49y5wcz57x0xgkh97w997kmb-grub.cfg.drv...
> /gnu/store/2lnjrv5388727sw45jhrrsyf0140nrd2-system
> /gnu/store/gsxap47dgsjs6zvdim42j5lal5rfj10w-grub.cfg
>
> activating system...
> making '/gnu/store/2lnjrv5388727sw45jhrrsyf0140nrd2-system' the current system...
> setting up setuid programs in '/run/setuid-programs'...
> populating /etc from /gnu/store/hzhhbayyfxjqghxklawy8r8a1i8ws7pg-etc...
> The following derivation will be built:
>    /gnu/store/6wy32ybajjrdn1nydvp1i0iai6x77jqc-install-bootloader.scm.drv
> building /gnu/store/6wy32ybajjrdn1nydvp1i0iai6x77jqc-install-bootloader.scm.drv...
> guix system: bootloader successfully installed on '/dev/sda'
> guix system: error: exception caught while executing 'eval' on service 'root':
> Unrecognized keyword: #:file-creation-mask

Can you post the output of 'guix describe' and the config.scm you are
using?