_nixbld 1 through 4 have disappeared

[Dandandooo]

Describe the bug

I am trying to rebuild my home-manager config using home-manager switch without any flakes. After parsing my code for errors, nix outputs the following:

❯ home-manager switch
these 13 derivations will be built:
  /nix/store/jcrd05mlpsw8wmixwd133pv3q3xbm18w-nerdfonts-3.2.1.drv
  /nix/store/0ddr3y50pv5p00v28rs4jcgcibyr98py-home-manager-path.drv
  /nix/store/2j3zpliq26xqbwqxxy4hjf4jn78sq911-nerdfonts-3.2.1-fish-completions.drv
  /nix/store/0jqlw4k6vi2cm6zc8vwbs8s8d27lk1ca-dani-fish-completions.drv
  /nix/store/nwadv2hi8vj00ml8mq9zmnbnbhci51pd-man-paths.drv
  /nix/store/y5r5jmyxknhqcr7vz6bw0hbqyf3sjn99-man-cache.drv
  /nix/store/m3n5bz1a667garxgqj92gafbpml134z3-hm_.manpath.drv
  /nix/store/hg1vna8m7dhiajn41nw965v2ip68vlp1-home-manager-fonts.drv
  /nix/store/ni1c496hgrypy6y5cjakwfmpm158b9bb-hm_LibraryFonts.homemanagerfontsversion.drv
  /nix/store/nq7rcq40vgqgrg9vgkh4xfr43kc0q37g-home-manager-applications.drv
  /nix/store/mp6pyi48s0xi6q8x41srlvg72zjyr2vn-home-manager-files.drv
  /nix/store/qpnkw5s7a39v0r1v40bv1frfbpa6pmh3-activation-script.drv
  /nix/store/20z2x7mrp1rv7yyh8y6jq02sy2zsdinh-home-manager-generation.drv
error: the user '_nixbld1' in the group 'nixbld' does not exist

Curious, I then switch to nushell to check out my system. The users are outputted as follows:

❯ (((sys).host).sessions).name | sort
╭────┬──────────────╮
│  0 │ _mbsetupuser │
│  1 │ _nixbld10    │
│  2 │ _nixbld11    │
│  3 │ _nixbld12    │
│  4 │ _nixbld13    │
│  5 │ _nixbld14    │
│  6 │ _nixbld15    │
│  7 │ _nixbld16    │
│  8 │ _nixbld17    │
│  9 │ _nixbld18    │
│ 10 │ _nixbld19    │
│ 11 │ _nixbld20    │
│ 12 │ _nixbld21    │
│ 13 │ _nixbld22    │
│ 14 │ _nixbld23    │
│ 15 │ _nixbld24    │
│ 16 │ _nixbld25    │
│ 17 │ _nixbld26    │
│ 18 │ _nixbld27    │
│ 19 │ _nixbld28    │
│ 20 │ _nixbld29    │
│ 21 │ _nixbld30    │
│ 22 │ _nixbld31    │
│ 23 │ _nixbld32    │
│ 24 │ _nixbld5     │
│ 25 │ _nixbld6     │
│ 26 │ _nixbld7     │
│ 27 │ _nixbld8     │
│ 28 │ _nixbld9     │
│ 29 │ dani         │
│ 30 │ gerry        │
│ 31 │ root         │
╰────┴──────────────╯

Steps To Reproduce

Described above.

Expected behavior

I expect it to show me directories (which it does) then tell me that my git tree is dirty 4 times then successfully exit and show how many packages were built.

nix-env --version output

nix-env (Nix) 2.21.1

Additional context

I'm on the MacOS Sequoia developer beta, and this is my first time building in the new operating system, but I'm not sure if it's the problem.

Priorities

Add 👍 to issues you find important.

[cole-h]

This sounds related to #10892 (or at least one of the issues linked to/from it) so I'm going to close this as a duplicate. I don't know if there is a migration path for existing installs that have hit this, but fresh installs can use the workaround in #10892 (comment).