Can't rebuild switch after flake update

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1

I ran nix flake update the other day to update my flakes
Since then I can’t rebuild my config and I get the following error

nix --version
nix (Nix) 2.28.1

sudo nixos-rebuild switch --flake .#brokkr
[sudo] password for river: 
warning: Git tree '/home/river/dev/github.com/iainvm/nix' is dirty
error:
       … while calling the 'seq' builtin
         at /nix/store/5ds20jm3x2s4z7wn3581r6lc9ybmh45b-source/lib/modules.nix:359:18:
          358|         options = checked options;
          359|         config = checked (removeAttrs config [ "_module" ]);
             |                  ^
          360|         _module = checked (config._module);

       … while evaluating a branch condition
         at /nix/store/5ds20jm3x2s4z7wn3581r6lc9ybmh45b-source/lib/modules.nix:295:9:
          294|       checkUnmatched =
          295|         if config._module.check && config._module.freeformType == null && merged.unmatchedDefns != [ ] then
             |         ^
          296|           let

       … while evaluating the module argument `pkgs' in "/nix/store/5ds20jm3x2s4z7wn3581r6lc9ybmh45b-source/nixos/modules/services/hardware/bluetooth.nix":

       … while evaluating the option `nixpkgs.overlays':

       … while evaluating definitions from `/nix/store/5ds20jm3x2s4z7wn3581r6lc9ybmh45b-source/flake.nix':

       (stack trace truncated; use '--show-trace' to show the full, detailed trace)

       error: path '/nix/store/64lxq5kn85vglf3xhbh0zxjj8hin3m42-source/lib/flake.nix' does not exist

Even though it points to a bluetooth module I wrote, I think that’s a red herring, as it’s evaluating pkgs

I don’t know what /nix/store/64lxq5kn85vglf3xhbh0zxjj8hin3m42-source is suppose to be the source of, since the directory doesn’t exist, so I don’t know why /nix/store/5ds20jm3x2s4z7wn3581r6lc9ybmh45b-source (the nixpkgs [unstable]) would be pointing at it

Setting nixpkgs back to nixos-24.05 gave the same error
Git checking out a previous commit before I updated gives the same error (though different store hashes)

2

Since it was complaining about overlays I decided to comment out all use of overlays in my config

But now I have this error

❯ sudo nixos-rebuild switch --flake .#brokkr --show-trace
warning: Git tree '/home/river/dev/github.com/iainvm/nix' is dirty
building the system configuration...
warning: Git tree '/home/river/dev/github.com/iainvm/nix' is dirty
error:
       … while setting up the build environment

       error: getting attributes of path '/nix/store/b8kck9x64fkggcxi04x7zzx7frb45lq8-curl-8.12.1-man': No such file or directory