🙃

backend/flake.lock

@@ -22,6 +22,24 @@
         "type": "github"
       }
     },
+    "flake-utils": {
+      "inputs": {
+        "systems": "systems"
+      },
+      "locked": {
+        "lastModified": 1731533236,
+        "narHash": "sha256-l0KFg5HjrsfsO/JpG+r7fRrqm12kzFHyUHqHCVpMMbI=",
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "rev": "11707dc2f618dd54ca8739b309ec4fc024de578b",
+        "type": "github"
+      },
+      "original": {
+        "owner": "numtide",
+        "repo": "flake-utils",
+        "type": "github"
+      }
+    },
     "naersk": {
       "inputs": {
         "fenix": "fenix",
@@ -75,6 +93,7 @@
     },
     "root": {
       "inputs": {
+        "flake-utils": "flake-utils",
         "naersk": "naersk",
         "nixpkgs": "nixpkgs_2"
       }
@@ -95,6 +114,21 @@
         "repo": "rust-analyzer",
         "type": "github"
       }
+    },
+    "systems": {
+      "locked": {
+        "lastModified": 1681028828,
+        "narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
+        "owner": "nix-systems",
+        "repo": "default",
+        "rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
+        "type": "github"
+      },
+      "original": {
+        "owner": "nix-systems",
+        "repo": "default",
+        "type": "github"
+      }
     }
   },
   "root": "root",

backend/flake.nix

@@ -4,41 +4,47 @@
   inputs = {
     naersk.url = "github:nix-community/naersk";
     nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-unstable";
+    flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs = {
     self,
     naersk,
     nixpkgs,
-  }: let
-    system = "x86_64-linux";
-    pkgs = import nixpkgs {inherit system;};
-    naerskLib = pkgs.callPackage naersk {};
-    buildInputs = [pkgs.openssl];
-    nativeBuildInputs = [pkgs.pkg-config];
-  in {
-    packages.${system}.default = naerskLib.buildPackage {
-      src = ./.;
-      buildInputs = buildInputs;
-      nativeBuildInputs = nativeBuildInputs;
-    };
+    flake-utils,
+  }:
+    flake-utils.lib.eachDefaultSystem (
+      system: let
+        pkgs = import nixpkgs {
+          inherit system;
+        };
+        naerskLib = pkgs.callPackage naersk {};
+        buildInputs = [pkgs.openssl];
+        nativeBuildInputs = [pkgs.pkg-config];
+      in {
+        packages.${system}.default = naerskLib.buildPackage {
+          src = ./.;
+          buildInputs = buildInputs;
+          nativeBuildInputs = nativeBuildInputs;
+        };
 
-    devShells.${system}.default = pkgs.mkShell {
-      inputsFrom = [self.packages.${system}.default];
+        devShells.${system}.default = pkgs.mkShell {
+          inputsFrom = [self.packages.${system}.default];
 
-      packages = with pkgs; [
-        rustc
-        cargo
-        rustfmt
-        rust-analyzer
-        zsh
-      ];
+          packages = with pkgs; [
+            rustc
+            cargo
+            rustfmt
+            rust-analyzer
+            zsh
+          ];
 
-      shellHook = ''
-        export SHELL=${pkgs.zsh}/bin/zsh
-        # jump into zsh if we didn't already start in it
-        [ -z "$ZSH_VERSION" ] && exec ${pkgs.zsh}/bin/zsh -l
-      '';
-    };
-  };
+          shellHook = ''
+            export SHELL=${pkgs.zsh}/bin/zsh
+            # jump into zsh if we didn't already start in it
+            [ -z "$ZSH_VERSION" ] && exec ${pkgs.zsh}/bin/zsh -l
+          '';
+        };
+      }
+    );
 }