fix?(package): postgreact: ~stir the stupid shit till it works [3]

package/c/postgreact/default.nix

@@ -1,11 +1,42 @@
 {
   lib,
-}: {
+  stdenv,
+  postgresql,
+  ...
+}:
+stdenv.mkDerivation rec {
   pname = "postgreact";
   version = "1.0";
 
   src = ./.;
 
+  USE_PGXS = 1;
+  EXTENSION = pname;
+  EXTENSION_VERSION = version;
+  EXTENSION_COMMENT = meta.description;
+
   buildInputs = [
+    postgresql
   ];
+
+  buildPhase = ''make all'';
+
+  installPhase = ''
+    mkdir -p $out/lib/postgresql $out/share/postgresql/extension
+
+    # Install compiled library
+    install -m 755 -D postgreact.so $out/lib/postgresql/postgreact.so
+
+    # Install control and SQL files
+    install -m 644 -D postgreact.control $out/share/postgresql/extension/postgreact.control
+    install -m 644 -D postgreact--${EXTENSION_VERSION}.sql $out/share/postgresql/extension/postgreact--${EXTENSION_VERSION}.sql
+  '';
+
+  meta = with lib; {
+    description = "PostgreSQL extension for simple templating.";
+    homepage = "https://github.com/yukkop/util.nix";
+    license = licenses.asl20;
+    platforms = postgresql.meta.platforms;
+    maintainers = with maintainers; [];
+  };
 }