Add nix dev shell

.envrc

@@ -0,0 +1,4 @@
+if command -v nix-shell &> /dev/null
+then
+    use flake
+fi

flake.nix

@@ -0,0 +1,27 @@
+{
+  description = "DeployCat Web";
+  inputs.nixpkgs.url = "github:NixOS/nixpkgs/master";
+  inputs.flake-utils.url = "github:numtide/flake-utils";
+
+  outputs = { self, nixpkgs, flake-utils }:
+    flake-utils.lib.eachDefaultSystem (system:
+      let
+        pkgs = nixpkgs.legacyPackages.${system};
+      in
+      {
+        devShell = pkgs.mkShell {
+          nativeBuildInputs = [ pkgs.bashInteractive ];
+          buildInputs = with pkgs; [
+            nodePackages.prisma
+            nodePackages.npm
+            nodejs-slim
+          ];
+          shellHook = with pkgs; ''
+            export PRISMA_SCHEMA_ENGINE_BINARY="${prisma-engines}/bin/schema-engine"
+            export PRISMA_QUERY_ENGINE_BINARY="${prisma-engines}/bin/query-engine"
+            export PRISMA_QUERY_ENGINE_LIBRARY="${prisma-engines}/lib/libquery_engine.node"
+            export PRISMA_FMT_BINARY="${prisma-engines}/bin/prisma-fmt"
+          '';
+        };
+      });
+}