1 files changed, 13 insertions, 0 deletions
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..017c4c8
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,13 @@
+with (import <nixpkgs> {});
+let
+  env = bundlerEnv {
+    name = "punchcard-bundler-env";
+    inherit ruby;
+    gemfile  = ./Gemfile;
+    lockfile = ./Gemfile.lock;
+    gemset   = ./gemset.nix;
+  };
+in stdenv.mkDerivation {
+  name = "cassiopeia";
+  buildInputs = [ ruby env ];
+}