travis: add update instructions (#36855)

2018-03-12 10:47:16 +00:00
parent a9e1ae3d29
commit bbf69b7301
5 changed files with 27 additions and 3 deletions
@@ -0,0 +1,11 @@
+# Env to update Gemfile.lock / gemset.nix
+
+with import <nixpkgs> {};
+stdenv.mkDerivation {
+  name = "env";
+  buildInputs = [
+    ruby.devEnv
+    gnumake
+    bundix
+  ];
+}