From 750e708c2d0dc92968ceec42fed4ae260d6e3912 Mon Sep 17 00:00:00 2001
From: Fede Barcelona <fede_rico_94@hotmail.com>
Date: Mon, 18 May 2026 10:01:20 +0200
Subject: [PATCH] chore: pin go_1_26 to nixos-25.11

In nixpkgs-unstable, go_1_26 is a critical package with many reverse
dependencies, slowing its updates. nixos-25.11 has fewer dependents and
updates the toolchain faster, so source it from there via overlay.
---
 flake.lock | 19 ++++++++++++++++++-
 flake.nix  | 15 ++++++++++++++-
 2 files changed, 32 insertions(+), 2 deletions(-)

diff --git a/flake.lock b/flake.lock
index 7e0248c..1067415 100644
--- a/flake.lock
+++ b/flake.lock
@@ -34,10 +34,27 @@
         "type": "github"
       }
     },
+    "nixpkgs-25-11": {
+      "locked": {
+        "lastModified": 1778737229,
+        "narHash": "sha256-6xWoytx8jFW4PF1GjRm/i/53trbpKGfz6zjzQGBr4cI=",
+        "owner": "NixOS",
+        "repo": "nixpkgs",
+        "rev": "d7a713c0b7e47c908258e71cba7a2d77cc8d71d5",
+        "type": "github"
+      },
+      "original": {
+        "owner": "NixOS",
+        "ref": "nixos-25.11",
+        "repo": "nixpkgs",
+        "type": "github"
+      }
+    },
     "root": {
       "inputs": {
         "flake-utils": "flake-utils",
-        "nixpkgs": "nixpkgs"
+        "nixpkgs": "nixpkgs",
+        "nixpkgs-25-11": "nixpkgs-25-11"
       }
     },
     "systems": {
diff --git a/flake.nix b/flake.nix
index 8b8dd9d..b50ae00 100644
--- a/flake.nix
+++ b/flake.nix
@@ -1,12 +1,14 @@
 {
   inputs = {
     nixpkgs.url = "github:NixOS/nixpkgs/nixpkgs-unstable";
+    nixpkgs-25-11.url = "github:NixOS/nixpkgs/nixos-25.11";
     flake-utils.url = "github:numtide/flake-utils";
   };
   outputs =
     {
       self,
       nixpkgs,
+      nixpkgs-25-11,
       flake-utils,
     }:
     let
@@ -17,13 +19,24 @@
           else
             prev.callPackage ./package.nix { };
       };
+      useLatestGoVersion =
+        final: prev:
+        let
+          nixpkgs = import nixpkgs-25-11 { inherit (prev) system; };
+        in
+        {
+          go_1_26 = nixpkgs.go_1_26;
+        };
       flake = flake-utils.lib.eachDefaultSystem (
         system:
         let
           pkgs = import nixpkgs {
             inherit system;
             config.allowUnfree = true;
-            overlays = [ self.overlays.default ];
+            overlays = [
+              self.overlays.default
+              useLatestGoVersion
+            ];
           };
         in
         {