update

crystal/flake.nix

@@ -0,0 +1,34 @@
+{
+  description = "minimal flake for crystal dev";
+
+  inputs.nixpkgs.url = "https://flakehub.com/f/NixOS/nixpkgs/0.1";
+
+  outputs =
+    inputs:
+    let
+      supportedSystems = [
+        "x86_64-linux"
+        "aarch64-linux"
+        "x86_64-darwin"
+        "aarch64-darwin"
+      ];
+      forEachSupportedSystem =
+        f:
+        inputs.nixpkgs.lib.genAttrs supportedSystems (
+          system:
+          f {
+            pkgs = import inputs.nixpkgs { inherit system; };
+          }
+        );
+    in
+    {
+      devShells = forEachSupportedSystem (
+        { pkgs }:
+        {
+          default = pkgs.mkShell {
+            packages = with pkgs; [ crystal ];
+          };
+        }
+      );
+    };
+}

flake.nix

@@ -21,6 +21,10 @@
           path = ./odin;
           description = "odin template";
         };
+        crystal = {
+          path = ./crystal;
+          description = "crystal template";
+        };
       };
 
       defaultTemplate = self.templates.go;