WIP: Add option to build project with nix

.gitignore

@@ -42,6 +42,7 @@ extras/
 /dist/
 /data/
 datastore/migration/testfiles/
+result
 
 docs/venv
 

flake.nix

@@ -5,20 +5,108 @@
   };
 
   outputs =
-    { nixpkgs, flake-utils, ... }:
+    {
+      nixpkgs,
+      flake-utils,
+      ...
+    }:
     flake-utils.lib.eachDefaultSystem (
       system:
       let
         pkgs = nixpkgs.legacyPackages.${system};
+
+        # Common attributes for all components
+        commonAttrs = {
+          version = "0.0.0";
+          vendorHash = "sha256-0hInlX2yXf9IBW1h9lYeG1pn9v3LtVRoWNJJIiIdPaU=";
+        };
+
+        # Common builder function for woodpecker components
+        mkWoodpeckerComponent =
+          {
+            pname,
+            subPackages ? [ ],
+            buildTags ? [ ],
+            nativeBuildInputs ? [ ],
+            preBuild ? "",
+            CGO_ENABLED ? "0",
+          }:
+          pkgs.buildGoModule ({
+            inherit pname;
+            inherit (commonAttrs)
+              version
+              vendorHash
+              ;
+            inherit
+              subPackages
+              buildTags
+              nativeBuildInputs
+              preBuild
+              CGO_ENABLED
+              ;
+
+            src = ./.;
+
+            meta = {
+              mainProgram = pname;
+              description = "A distributed CI/CD system";
+              homepage = "https://woodpecker-ci.org";
+              license = pkgs.lib.licenses.asl20;
+            };
+          });
+
       in
       {
+        packages = rec {
+          cli = mkWoodpeckerComponent {
+            pname = "woodpecker-cli";
+            subPackages = [ "cmd/cli" ];
+          };
+
+          server = mkWoodpeckerComponent {
+            pname = "woodpecker-server";
+            subPackages = [ "cmd/server" ];
+            CGO_ENABLED = "1";
+            nativeBuildInputs = with pkgs; [
+              nodejs_20
+              pnpm
+              gnumake
+            ];
+            preBuild = ''
+              export HOME=$(mktemp -d)
+
+              cd web
+              pnpm install --frozen-lockfile
+              pnpm build
+              cd ..
+
+              go generate cmd/server/swagger.go
+            '';
+          };
+
+          agent = mkWoodpeckerComponent {
+            pname = "woodpecker-agent";
+            subPackages = [ "cmd/agent" ];
+          };
+
+          default = pkgs.symlinkJoin {
+            name = "woodpecker";
+            paths = [
+              cli
+              agent
+              # server # need impure because of pnpm
+            ];
+          };
+        };
+
         devShells.default = pkgs.mkShell {
           buildInputs = with pkgs; [
             # generic
             gnumake
             gnutar
             zip
             tree
+            git
 
             # frontend
             nodejs_20