add shell.nix

shell.nix

@@ -0,0 +1,32 @@
+{ java ? "jdk17_headless" }:
+
+let
+  jdk = pkgs.${java};
+
+  config = {
+    packageOverrides = p: rec {
+      sbt = p.sbt.overrideAttrs (old: rec {
+        patchPhase = ''
+          echo -java-home ${jdk} >> conf/sbtopts
+        '';
+      });
+    };
+  };
+
+  pkgs = import <nixpkgs> { inherit config; };
+
+in pkgs.mkShell {
+
+  buildInputs = [ jdk pkgs.sbt pkgs.grpcurl pkgs.metals pkgs.figlet ];
+
+  shellHook = ''
+    [ ! -f /tmp/figlet/Shadow.flf ] &&\
+    mkdir -p /tmp/figlet &&\
+    curl -L https://raw.githubusercontent.com/xero/figlet-fonts/master/ANSI%20Shadow.flf > /tmp/figlet/Shadow.flf
+    echo -e "\033[36m$(figlet -f "/tmp/figlet/Shadow.flf" "scala")\033[0m"
+    mkdir -p ~/.cache/nvim/nvim-metals  # Asegúrate de que la carpeta existe
+    ln -snf ${pkgs.metals}/bin/metals ~/.cache/nvim/nvim-metals/metals  # Crea el enlace simbólico
+    echo "Enlace simbólico creado: ~/.cache/nvim/nvim-metals/metals"
+  '';
+
+}