workspace: drop gitpod

flake.nix

@@ -0,0 +1,26 @@
+{
+  description = "Hydro development environment";
+
+  inputs = {
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
+  };
+
+  outputs = { self, nixpkgs }: 
+    let
+      system = "x86_64-linux";
+      pkgs = nixpkgs.legacyPackages.${system};
+    in {
+      packages.${system}.default = pkgs.hello;
+      devShells.${system}.default = pkgs.mkShell {
+        buildInputs = [
+          pkgs.nodejs
+          pkgs.yarn-berry
+          pkgs.pm2
+          pkgs.git
+          pkgs.gcc
+          pkgs.go-judge
+          pkgs.mongodb-ce
+        ];
+      };
+    };
+}