Initial package expression

Builds succesfully against NixOS 25.11.

package.nix

@@ -0,0 +1,74 @@
+{
+	# Build tools.
+
+	buildGoModule,
+	buildNpmPackage,
+	fetchFromGitLab,
+	fetchPnpmDeps,
+	nodejs,
+	pnpm_10,
+	pnpmConfigHook,
+	stdenv,
+
+	# Options.
+
+	version ? "0.15.0",
+}:
+
+let
+	pname = "fmd-server";
+
+	src = fetchFromGitLab {
+		owner = "fmd-foss";
+		repo = "fmd-server";
+		tag = "v${version}";
+		hash = "sha256-EzhXrB15lRtDnFicdH7fjpcm1BYoAb1SBeylGSub69s=";
+	};
+
+	frontend = let
+		pname = "fmd-server-frontend";
+	in stdenv.mkDerivation {
+		inherit pname version src;
+
+		pnpmRoot = "web";
+
+		pnpmDeps = fetchPnpmDeps {
+			inherit pname version src;
+
+			pnpm = pnpm_10;
+			fetcherVersion = 3;
+			sourceRoot = "${src.name}/web";
+			hash = "sha256-vKSKPwOkb7TwDUlkl8lUvO6tLKp2NyBQ0BGxThUN2P8=";
+		};
+
+		nativeBuildInputs = [ nodejs pnpm_10 pnpmConfigHook ];
+
+		buildPhase = ''
+			runHook preBuild
+
+			cd web
+			pnpm build
+
+			runHook postBuild
+		'';
+
+		installPhase = ''
+			runHook preInstall
+
+			mkdir $out
+			cp -R dist $out/
+
+			runHook postInstall
+		'';
+	};
+in
+
+buildGoModule {
+	inherit pname version src;
+
+	vendorHash = "sha256-cFIg9mOSQbrYHW4kg4aTeTaF+gy1jNpAlg8qepb81Jc=";
+
+	preBuild = ''
+		cp -R ${frontend}/dist web/
+	'';
+}