Cache nixpkgs

.drone.yml

@@ -17,7 +17,7 @@ steps:
       NETLIFY_AUTH_TOKEN:
         from_secret: netlify_auth_token
     commands:
-      - nix-shell -I nixpkgs=https://github.com/NixOS/nixpkgs/archive/24c9b05ac53e422f1af81a156f1fd58499eb27fb.tar.gz -p netlify-cli --run "netlify deploy --prod -d $(readlink -f result)"
+      - nix-shell -I nixpkgs=./nixpkgs.nix -p netlify-cli --run "netlify deploy --prod -d $(readlink -f result)"
 
 node:
   nix: 1

default.nix

@@ -1,5 +1,5 @@
 let
-  pkgs = import (fetchTarball "https://github.com/NixOS/nixpkgs/archive/24c9b05ac53e422f1af81a156f1fd58499eb27fb.tar.gz") {};
+  pkgs = import ./nixpkgs.nix {};
 
   # reproducible source
   gitignoreSrc = pkgs.fetchFromGitHub {

nixpkgs.nix

@@ -0,0 +1,4 @@
+import (fetchTarball {
+  url = "https://github.com/NixOS/nixpkgs/archive/24c9b05ac53e422f1af81a156f1fd58499eb27fb.tar.gz";
+  sha256 = "1aw5zxd91rzvvzqk8zi5qrnkjsgf4nv77pa3jbpsymhpwr0gj5i3";
+})