nix-serve maybe

flake.nix

@@ -279,6 +279,117 @@
           ];
         };
       };
+    
+      # Improved build-all app
+      apps.x86_64-linux.build-all = let
+        pkgs = nixpkgs-unstable.legacyPackages.x86_64-linux;
+      in {
+        type = "app";
+        program = toString (pkgs.writeShellScript "build-all" ''
+          #!/usr/bin/env bash
+          set -euo pipefail
+          
+          # Get the list of system names directly from flake.nix
+          # This avoids JSON serialization issues
+          systems=($(grep -o '"[^"]*"[[:space:]]*=' flake.nix | grep -v '_\|#\|"\.\|\*' | sed 's/"//g' | sed 's/=//g' | xargs))
+          
+          echo "Found systems: ''${systems[@]}"
+          echo "Building all compatible systems..."
+          
+          # Track success/failure
+          success=()
+          failure=()
+          
+          for system in "''${systems[@]}"; do
+            echo "Attempting to build $system..."
+            
+            # Detect system type without JSON evaluation
+            if nix eval --raw ".#nixosConfigurations.$system.pkgs.stdenv.hostPlatform.system" 2>/dev/null; then
+              system_type=$(nix eval --raw ".#nixosConfigurations.$system.pkgs.stdenv.hostPlatform.system" 2>/dev/null || echo "unknown")
+              
+              # Only build if we're on the same system type or can cross-compile
+              if [ "$system_type" = "x86_64-linux" ]; then
+                echo "Building $system (x86_64-linux)..."
+                if nix build ".#nixosConfigurations.$system.config.system.build.toplevel" --out-link "./result-$system" --no-link; then
+                  echo "✅ Successfully built $system"
+                  
+                  # Copy to the binary cache
+                  echo "Copying $system to binary cache..."
+                  nix copy --to "http://localhost:5000?secret-key=/etc/nix/cache-priv-key.pem" ".#nixosConfigurations.$system.config.system.build.toplevel"
+                  success+=("$system")
+                else
+                  echo "❌ Failed to build $system"
+                  failure+=("$system")
+                fi
+              elif [ "$system_type" = "aarch64-linux" ] && command -v qemu-aarch64-static >/dev/null 2>&1; then
+                echo "Cross-building $system (aarch64-linux)..."
+                if nix build ".#nixosConfigurations.$system.config.system.build.toplevel" --system aarch64-linux --out-link "./result-$system" --no-link; then
+                  echo "✅ Successfully built $system"
+                  nix copy --to "http://localhost:5000?secret-key=/etc/nix/cache-priv-key.pem" ".#nixosConfigurations.$system.config.system.build.toplevel"
+                  success+=("$system")
+                else
+                  echo "❌ Failed to build $system"
+                  failure+=("$system")
+                fi
+              else
+                echo "⚠️ Skipping $system ($system_type) - incompatible with this host"
+                failure+=("$system (incompatible)")
+              fi
+            elif nix eval --raw ".#darwinConfigurations.$system.system" 2>/dev/null; then
+              echo "Found Darwin system $system, attempting to build packages..."
+              if nix build ".#darwinConfigurations.$system.system" --out-link "./result-darwin-$system" --no-link; then
+                echo "✅ Successfully built $system packages"
+                nix copy --to "http://localhost:5000?secret-key=/etc/nix/cache-priv-key.pem" ".#darwinConfigurations.$system.system"
+                success+=("$system (darwin)")
+              else
+                echo "❌ Failed to build $system packages"
+                failure+=("$system (darwin)")
+              fi
+            else
+              echo "⚠️ Skipping $system - could not determine system type"
+              failure+=("$system (unknown)")
+            fi
+          done
+          
+          # Summary
+          echo ""
+          echo "===== Build Summary ====="
+          echo "✅ Successfully built: ''${success[*]:-none}"
+          echo "❌ Failed to build: ''${failure[*]:-none}"
+          
+          # Return error code if any builds failed
+          if [ ''${#failure[@]} -gt 0 ]; then
+            exit 1
+          fi
+        '');
+      };
+      
+      # You could also provide a separate script that only lists systems
+      apps.x86_64-linux.list-systems = let
+        pkgs = nixpkgs-unstable.legacyPackages.x86_64-linux;
+      in {
+        type = "app";
+        program = toString (pkgs.writeShellScript "list-systems" ''
+          #!/usr/bin/env bash
+          set -euo pipefail
+          
+          # Get systems from flake.nix
+          systems=($(grep -o '"[^"]*"[[:space:]]*=' flake.nix | grep -v '_\|#\|"\.\|\*' | sed 's/"//g' | sed 's/=//g' | xargs))
+          
+          echo "Found systems in flake.nix:"
+          for system in "''${systems[@]}"; do
+            # Try to determine if it's a NixOS or Darwin system
+            if nix eval --raw ".#nixosConfigurations.$system.pkgs.stdenv.hostPlatform.system" 2>/dev/null; then
+              system_type=$(nix eval --raw ".#nixosConfigurations.$system.pkgs.stdenv.hostPlatform.system" 2>/dev/null)
+              echo "  - $system (NixOS, $system_type)"
+            elif nix eval --raw ".#darwinConfigurations.$system.system" 2>/dev/null; then
+              echo "  - $system (Darwin)"
+            else
+              echo "  - $system (unknown type)"
+            fi
+          done
+        '');
+      };
 
       # Expose the package set, including overlays, for convenience.
       darwinPackages = self.darwinConfigurations."MacBook-Pro".pkgs;