Connection refused by demon since nixos-rebuilt, probably other related problems

1

Since a nixos-rebuild switch --upgrade this morning, I can’t do any nix related commands anymore, that want to talk to the demon without using sudo, which again does it in the wrong context then.

The rebuild was done with --update by accident, I actually wanted just add "btrfs" and "exfat" to boot.filesystems and do a switch with reboot, though I took the wrong command from history…

Already during that rebuild, I messages like this passing by (these are from a subsequent run):

Failed to start basic.target: Unit -.mount is masked.
Failed to start graphical.target: Unit -.mount is masked.
Failed to start local-fs.target: Unit boot.mount is masked.
Failed to start multi-user.target: Unit -.mount is masked.
Failed to start swap.target: Unit -.mount is masked.

Now any sudo nixos-rebuild does print also warnings like these multiple times as well as those from above:

perl: warning: Setting locale failed.
perl: warning: Please check that your locale settings:
        LANGUAGE = "",
        LC_ALL = (unset),
        LANG = "en_DE.UTF-8"
    are supported and installed on your system.
perl: warning: Falling back to the standard locale ("C").

Also my prompt (pwerlevel10k) for zsh isn’t working anymore, though currently I’m not sure if this is related or not.

2

Not beeing able to connect to the daemon, as well as the “Unit -.mount is masked” went away after a reboot and another rebuild…

Still the warnings because of the locale persist…

3

locale errors are due to wrong $LOCALE_ARCHIVE. What is it set to? Does the archive exists?

4

Yes it does and permissions seem to be fine.

$ printenv LOCALE_ARCHIVE
/run/current-system/sw/lib/locale/locale-archive
$ stat /run/current-system/sw/lib/locale/locale-archive
  File: /run/current-system/sw/lib/locale/locale-archive
  Size: 128690032       Blocks: 251549     IO Block: 131072 regular file
Device: 1ah/26d Inode: 10343       Links: 2
Access: (0444/-r--r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2020-02-07 00:08:23.826846694 +0100
Modify: 1970-01-01 01:00:01.000000000 +0100
Change: 2020-02-07 00:40:55.855517232 +0100
 Birth: -

edit:

I followed the link:

stat $(readlink -f $(printenv LOCALE_ARCHIVE))
  File: /nix/store/nl67flma20ixa0x5jms4wk0yfbx4c9wb-glibc-locales-2.27/lib/locale/locale-archive
  Size: 128690032       Blocks: 251549     IO Block: 131072 regular file
Device: 1ah/26d Inode: 10343       Links: 2
Access: (0444/-r--r--r--)  Uid: (    0/    root)   Gid: (    0/    root)
Access: 2020-02-07 00:08:23.826846694 +0100
Modify: 1970-01-01 01:00:01.000000000 +0100
Change: 2020-02-07 00:40:55.855517232 +0100
 Birth: -
5

Additional observation:

After I set LANG=en_US.UTF-8, then I won’t see any local related warnings anymore in the current shell session, also my prompt does work in that session.

Related section from /etc/nixos/configuration.nix:

i18n = {
  consoleFont = "Lat2-Terminus16";
  consoleKeyMap = "de";
  defaultLocale = "en_US.UTF-8";
};