From 86cd7e0948fd14e1a0dc3356132d666c60fc2bbd Mon Sep 17 00:00:00 2001
From: zowoq <59103226+zowoq@users.noreply.github.com>
Date: Sun, 2 Jul 2023 11:26:43 +1000
Subject: [PATCH] buildGo{Module,Package}: set GOTOOLCHAIN to local

prevent go from downloading another toolchain
---
 pkgs/build-support/go/module.nix  | 5 +++--
 pkgs/build-support/go/package.nix | 1 +
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/pkgs/build-support/go/module.nix b/pkgs/build-support/go/module.nix
index b27a22d6702b..09b43063fb96 100644
--- a/pkgs/build-support/go/module.nix
+++ b/pkgs/build-support/go/module.nix
@@ -53,6 +53,7 @@ let
   args = removeAttrs args' [ "overrideModAttrs" "vendorSha256" "vendorHash" ];
 
   GO111MODULE = "on";
+  GOTOOLCHAIN = "local";
 
   goModules = if (vendorHash == null) then "" else
   (stdenv.mkDerivation {
@@ -62,7 +63,7 @@ let
 
     inherit (args) src;
     inherit (go) GOOS GOARCH;
-    inherit GO111MODULE;
+    inherit GO111MODULE GOTOOLCHAIN;
 
     # The following inheritence behavior is not trivial to expect, and some may
     # argue it's not ideal. Changing it may break vendor hashes in Nixpkgs and
@@ -151,7 +152,7 @@ let
     inherit (go) GOOS GOARCH;
 
     GOFLAGS = lib.optionals (!proxyVendor) [ "-mod=vendor" ] ++ lib.optionals (!allowGoReference) [ "-trimpath" ];
-    inherit CGO_ENABLED enableParallelBuilding GO111MODULE;
+    inherit CGO_ENABLED enableParallelBuilding GO111MODULE GOTOOLCHAIN;
 
     configurePhase = args.configurePhase or (''
       runHook preConfigure
diff --git a/pkgs/build-support/go/package.nix b/pkgs/build-support/go/package.nix
index b4cb264d9f24..7e099b76f0b7 100644
--- a/pkgs/build-support/go/package.nix
+++ b/pkgs/build-support/go/package.nix
@@ -86,6 +86,7 @@ let
     inherit CGO_ENABLED enableParallelBuilding;
 
     GO111MODULE = "off";
+    GOTOOLCHAIN = "local";
     GOFLAGS = lib.optionals (!allowGoReference) [ "-trimpath" ];
 
     GOARM = toString (lib.intersectLists [(stdenv.hostPlatform.parsed.cpu.version or "")] ["5" "6" "7"]);