In reply to @nzbr:nzbr.de
Maybe try nix-channel --update. That might at least fix it by replacing the missing one with a new derivation

In reply to @mwoodpatrickmx:matrix.org
Did not help

I just updated to 24.11 and I'm still seeing this error:

error:
… while evaluating the attribute 'nixos-wsl'

   … while calling the 'import' builtin

   … while evaluating the file '/nix/store/cp3hsjlm5gqfvyw4nn5y6ir3hhcvpj9z-nixos-wsl/nixos-wsl/default.nix':

   … while evaluating the attribute 'defaultNix'
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:229:5:
      228|   rec {
      229|     defaultNix =
         |     ^
      230|       (builtins.removeAttrs result ["__functor"])

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

   error: path '/nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl' is not valid

Running with:

nix-env --show-trace -qaP hello

I get:

   … while evaluating the attribute 'nixos-wsl'

   … while calling the 'import' builtin

   … while evaluating the file '/nix/store/cp3hsjlm5gqfvyw4nn5y6ir3hhcvpj9z-nixos-wsl/nixos-wsl/default.nix':

   … while evaluating the attribute 'defaultNix'
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:229:5:
      228|   rec {
      229|     defaultNix =
         |     ^
      230|       (builtins.removeAttrs result ["__functor"])

   … in the left operand of the update (//) operator
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:231:7:
      230|       (builtins.removeAttrs result ["__functor"])
      231|       // (if result ? defaultPackage.${system} then { default = result.defaultPackage.${system}; } else {})
         |       ^
      232|       // (if result ? packages.${system}.default then { default = result.packages.${system}.default; } else {});

   … while calling the 'removeAttrs' builtin
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:230:8:
      229|     defaultNix =
      230|       (builtins.removeAttrs result ["__functor"])
         |        ^
      231|       // (if result ? defaultPackage.${system} then { default = result.defaultPackage.${system}; } else {})

   … from call site
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:224:10:
      223|     else if lockFile.version >= 5 && lockFile.version <= 7
      224|     then allNodes.${lockFile.root}
         |          ^
      225|     else throw "lock file '${lockFilePath}' has unsupported version ${toString lockFile.version}";

   … while calling anonymous lambda
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:156:13:
      155|     builtins.mapAttrs
      156|       (key: node:
         |             ^
      157|         let

   … in the condition of the assert statement
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:211:13:
      210|           if node.flake or true then
      211|             assert builtins.isFunction flake.outputs;
         |             ^
      212|             result

   … while calling the 'isFunction' builtin
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:211:20:
      210|           if node.flake or true then
      211|             assert builtins.isFunction flake.outputs;
         |                    ^
      212|             result

   … while calling the 'import' builtin
     at /nix/store/8kpx53qi52yhjai1vdw8zpa95iqa61bv-source/default.nix:167:19:
      166|
      167|           flake = import (outPath + "/flake.nix");
         |                   ^
      168|

   … while realising the context of path '/nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl/flake.nix'

   error: path '/nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl' is not valid

In reply to @k900:0upti.me
Try nix-store -r /nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl

I got this error:

nix-store -r /nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl
don't know how to build these paths:
/nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl
error: build of '/nix/store/l2sfdsab1fh107f5r8za7pnv9a2xxnlg-nixos-wsl' failed

Are you able to reproduce my error?