flake.nix: update for go 1.27

Signed-off-by: Winter M <winter@antithesis.com>

flake.lock

@@ -18,11 +18,11 @@
     },
     "nixpkgs": {
       "locked": {
-        "lastModified": 1772736753,
+        "lastModified": 1787814960,
-        "narHash": "sha256-au/m3+EuBLoSzWUCb64a/MZq6QUtOV8oC0D9tY2scPQ=",
+        "narHash": "sha256-PYZq1qzCJXC2zGI0mH07vrZBsw6DRBAOX0jN1pPtqOQ=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "917fec990948658ef1ccd07cef2a1ef060786846",
+        "rev": "c27cdad491a991b11ed731760aa2ef8db0cb0410",
         "type": "github"
       },
       "original": {

flake.nix

@@ -56,7 +56,7 @@
           system = system;
           overlays = [
             (final: prev: {
-              go_1_26 = prev.go_1_26.overrideAttrs (old: {
+              go_1_27 = prev.go_1_27.overrideAttrs (old: {
                 version = goVersion;
                 src = prev.fetchFromGitHub {
                   owner = "tailscale";
@@ -100,7 +100,7 @@
     # you're an end user you should be prepared for this flake to not
     # build periodically.
     packages = eachSystem (pkgs: rec {
-      default = pkgs.buildGo126Module {
+      default = pkgs.buildGo127Module {
         name = "tailscale";
         pname = "tailscale";
         src = ./.;
@@ -153,7 +153,7 @@
           gotools
           graphviz
           perl
-          go_1_26
+          go_1_27
           yarn
 
           # qemu and e2fsprogs are needed for natlab