using crate2nix with nixpkgs and flake: `error: attribute 'currentSystem' missing`

[happysalada]

After adding a package in nixpkgs with crate2nix, I'm experiencing some problems using it with flakes.

When I try to add it, I get the following stacktrace

at /nix/store/dxdvm5d0bmxhldkvmxl24xbac9xhq4x7-source/pkgs/top-level/impure.nix:15:1:

           14|
           15| { # We put legacy `system` into `localSystem`, if `localSystem` was not passed.
             | ^
           16|   # If neither is passed, assume we are building packages on the current

       … from call site

       at /nix/store/dxdvm5d0bmxhldkvmxl24xbac9xhq4x7-source/pkgs/servers/search/meilisearch/Cargo.nix:7:1

            6| { nixpkgs ? <nixpkgs>
            7| , pkgs ? import nixpkgs { config = {}; }
             |          ^
            8| , lib ? pkgs.lib

       … while evaluating 'buildRustCrateWithFeatures'

it looks like in the call to import nixpkgs, the system attribute is not passed. I'm wondering how to best solve this issue. currently trying a few things.

You can test this in nixpkgs master by running nix build .#meilisearch -L it will give you the whole stackstrace.

[yusdacra]

You need to pass in the pkgs to Cargo.nix while you are importing it in default.nix in the same folder. So adding pkgs to the arguments and inherit pkgs; in import Cargo.nix { ... } works fine.

[happysalada]

Thanks a lot of the help on this! I tried modifying the system attribute inside the import, but the best thing was indeed to pass pkgs directly. I tried removing the nixpkgs = ... line as well since it didn't seem needed.