been writing rust for like ten minutes and i'm already dealing with this shit

flake.nix

@@ -0,0 +1,54 @@
+{
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+    fenix = {
+      url = "github:nix-community/fenix";
+      inputs.nixpkgs.follows = "nixpkgs";
+    };
+  };
+
+  outputs = { self, nixpkgs, fenix, ... }:
+  let
+    supportedSystems = [
+      "aarch64-darwin" "aarch64-linux"
+      "x86_64-darwin" "x86_64-linux"
+    ];
+
+    each-system = f: nixpkgs.lib.genAttrs supportedSystems (system: f rec {
+      pkgs = import nixpkgs {
+        inherit system overlays;
+      };
+      inherit (pkgs) lib;
+      inherit system;
+    });
+
+    overlays = [
+      fenix.overlays.default
+    ];
+
+  in {
+    _pkgs = each-system ({ pkgs, ... }: pkgs);
+
+    devShells = each-system ({ pkgs, lib, ... }: {
+      default = pkgs.mkShell {
+        packages = [
+          pkgs.pkg-config
+          (pkgs.fenix.complete.withComponents [
+            "cargo" "clippy" "rust-src" "rustc" "rustfmt"
+          ])
+          pkgs.rust-analyzer-nightly
+          pkgs.cmake
+        ];
+      };
+    });
+  };
+
+  nixConfig = {
+    extra-substituters = [
+      "https://fenix.cachix.org"
+    ];
+    extra-trusted-public-keys = [
+      "fenix.cachix.org-1:ecJhr+RdYEdcVgUkjruiYhjbBloIEGov7bos90cZi0Q="
+    ];
+  };
+}