{ inputs = { fenix.url = "github:nix-community/fenix"; nixpkgs.url = "github:nixos/nixpkgs"; }; outputs = { self, nixpkgs, flake-utils, fenix }: flake-utils.lib.eachDefaultSystem (system: let pkgs = import nixpkgs { inherit system; overlays = [ fenix.overlays.default ]; }; toolchain = pkgs.fenix.stable; in rec { devShell = pkgs.mkShell { packages = (with pkgs; [ cargo-deny cargo-edit cargo-expand cargo-flamegraph cargo-watch (python310.withPackages (p: with p; [ jupyterlab pandas seaborn numpy scipy sympy ])) ]) ++ (with toolchain; [ cargo rustc clippy # Get the nightly version of rustfmt so we can wrap comments pkgs.fenix.default.rustfmt ]); CARGO_UNSTABLE_SPARSE_REGISTRY = "true"; }; }); }