add agru (directly, not from nixpkgs)

flake.nix

@@ -1,30 +1,44 @@
 {
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
     flake-utils.url = "github:numtide/flake-utils";
+    agru-src = {
+      url = "github:etkecc/agru";
+      flake = false;
+    };
   };
-  outputs = {
-    self,
-    nixpkgs,
-    flake-utils,
-  }:
-    flake-utils.lib.eachDefaultSystem
-    (
-      system: let
+  outputs =
+    {
+      self,
+      nixpkgs,
+      flake-utils,
+      agru-src,
+    }:
+    flake-utils.lib.eachDefaultSystem (
+      system:
+      let
         pkgs = import nixpkgs {
           inherit system;
         };
+        agru = pkgs.buildGo125Module {
+          pname = "agru";
+          version = "0.1.19";
+          src = agru-src;
+          vendorHash = null;
+        };
       in
-        with pkgs; {
-          devShells.default = mkShell {
-            buildInputs = [
-              just
-              ansible
-            ];
-            shellHook = ''
-              echo "$(ansible --version)"
-            '';
-          };
-        }
+      with pkgs;
+      {
+        devShells.default = mkShell {
+          buildInputs = [
+            just
+            ansible
+            agru
+          ];
+          shellHook = ''
+            echo "$(ansible --version)"
+          '';
+        };
+      }
     );
 }