fix flake

flake.nix

@@ -1,78 +1,112 @@
 {
-  description = "Your project description";
+  description = "Node.js development environment with NVM and PNPM";
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
-    pnpm2nix.url = "github:nzbr/pnpm2nix-nzbr";
+    nixpkgs.url = "github:nixos/nixpkgs";
     flake-utils.url = "github:numtide/flake-utils";
   };
 
   outputs = {
     self,
     nixpkgs,
-    pnpm2nix,
     flake-utils,
   }:
-    flake-utils.lib.eachDefaultSystem (
-      system: let
-        pkgs = nixpkgs.legacyPackages.${system};
-        pnpm2nix-lib = pnpm2nix.packages.${system};
-      in {
-        packages.default = pnpm2nix-lib.mkPnpmPackage {
-          src = ./.;
-
-          # Install dependencies in source directory for workspace support
-          installInPlace = true;
-
-          # Run recursive build across all workspace packages
-          script = "-r build";
-
-          # Copy all build outputs
-          distDir = ".";
-
-          buildPhase = ''
-            export HOME=$(mktemp -d)
-            pnpm install --frozen-lockfile
-            pnpm -r build
-          '';
-
-          installPhase = ''
-            mkdir -p $out
-            cp -r . $out/
-          '';
-        };
-
-        devShells.default = pkgs.mkShell {
-          packages = with pkgs; [
-            nodePackages.pnpm
-            cairo
-            pango
-            libpng
-          ];
-
-          shellHook = ''
-            export PATH="$PWD/node_modules/.bin:$PATH"
-            export PKG_CONFIG_PATH="${pkgs.cairo}/lib/pkgconfig:${pkgs.pango}/lib/pkgconfig:${pkgs.libpng}/lib/pkgconfig:$PKG_CONFIG_PATH"
-
-            echo "🤖 Eliza development environment loaded 🚀"
-            echo "------------------------------------------"
-            echo "Using:"
-            echo "      - Node.js $(node --version)"
-            echo "      - pnpm $(pnpm --version)"
-
-            echo """
-            🏗️  Quickstart Guide:
-            ------------------------
-            ┌─> 1. pnpm i      (Install dependencies)
-            │   2. pnpm build  (Build project)
-            └─  3. pnpm clean  (Clear Artifacts, for a fresh start)
-                4. pnpm test   (Run tests)
-
-            For more commands, run: pnpm --help
-            ------------------------
-            """
-          '';
-        };
-      }
-    );
+    flake-utils.lib.eachDefaultSystem (system: let
+      pkgs = nixpkgs.legacyPackages.${system};
+      fallbackNodeVersion = "23.3.0";
+      fallbackPnpmVersion = "9.14.4";
+
+      # Read and parse package.json
+      packageJson = let
+        path = ./package.json;
+      in
+        if builtins.pathExists path
+        then builtins.fromJSON (builtins.readFile path)
+        else {
+          engines = {node = fallbackNodeVersion;};
+          packageManager = "pnpm@${fallbackPnpmVersion}";
+        }; # Default if no package.json
+
+      # Extract Node.js version from engines field
+      nodeVersion = let
+        engineVersion = packageJson.engines.node or fallbackNodeVersion;
+        cleanVersion = builtins.replaceStrings ["^" ">" "=" "~" " "] ["" "" "" "" ""] engineVersion;
+      in
+        cleanVersion;
+
+      # Extract PNPM version from packageManager field
+      # Handles format: "[email protected]+sha512..." or "[email protected]"
+      pnpmVersion = let
+        packageManager = packageJson.packageManager or "pnpm@${fallbackPnpmVersion}";
+        # First split on '+' to remove SHA, then extract version
+        withoutSha = builtins.head (builtins.split "[+]" packageManager);
+        versionMatch = builtins.match "pnpm@([0-9]+[.][0-9]+[.][0-9]+).*" withoutSha;
+      in
+        if versionMatch == null
+        then fallbackPnpmVersion
+        else builtins.head versionMatch;
+    in {
+      devShell = pkgs.mkShell {
+        buildInputs = with pkgs; [
+          curl
+          git
+        ];
+
+        shellHook = ''
+          # Install nvm if it's not already installed
+          export NVM_DIR="$HOME/.nvm"
+          if [ ! -d "$NVM_DIR" ]; then
+            curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.39.0/install.sh | bash
+          fi
+
+          # Load nvm
+          [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
+
+          # Install and use the specified version if not already installed
+          if ! nvm ls ${nodeVersion} >/dev/null 2>&1; then
+            nvm install ${nodeVersion}
+          fi
+          nvm use ${nodeVersion}
+
+          # Enable and configure corepack for PNPM
+          corepack enable
+          corepack prepare pnpm@${pnpmVersion} --activate
+
+          # Setup PNPM environment
+          export PNPM_HOME="$HOME/.local/share/pnpm"
+          export PATH="$PNPM_HOME:$PATH"
+
+          # Get clean versions for comparison
+          NODE_ACTUAL=$(node --version | sed 's/^v//')
+          PNPM_ACTUAL=$(pnpm --version)
+
+          echo "🤖 Development environment loaded 🚀"
+          echo "------------------------------------------"
+          echo "package.json version(s) = environment:"
+
+          if [ "$NODE_ACTUAL" = "${nodeVersion}" ]; then
+            echo "✅ Node.js (v${nodeVersion})"
+          else
+            echo "❌ Node.js (v${nodeVersion} != v$NODE_ACTUAL)"
+          fi
+
+          if [ "$PNPM_ACTUAL" = "${pnpmVersion}" ]; then
+            echo "✅ PNPM (v${pnpmVersion})"
+          else
+            echo "❌ PNPM (v${pnpmVersion} != v$PNPM_ACTUAL)"
+          fi
+
+          echo """
+          🏗️  Quickstart Guide:
+          --------------------
+          ┌─> 1. pnpm i      (Install dependencies)
+          │   2. pnpm build  (Build project)
+          └─  3. pnpm clean  (Clear Artifacts, for a fresh start)
+              4. pnpm test   (Run tests)
+
+          For more commands, run: pnpm --help
+          """
+        '';
+      };
+    });
 }