tsearch-extras: init at 0.2

pkgs/servers/sql/postgresql/tsearch_extras/default.nix

@@ -0,0 +1,29 @@
+{ stdenv, fetchFromGitHub, pkgconfig, postgresql }:
+
+stdenv.mkDerivation rec {
+  name = "tsearch-extras-${version}";
+  version = "0.2";
+
+  src = fetchFromGitHub {
+    owner = "zulip";
+    repo = "tsearch_extras";
+    rev = version;
+    sha256 = "1ivg9zn7f1ks31ixxwywifwhzxn6py8s5ky1djyxnb0s60zckfjg";
+  };
+
+  nativebuildInputs = [ pkgconfig ];
+  buildInputs = [ postgresql ];
+
+  installPhase = ''
+    mkdir -p $out/bin
+    install -D tsearch_extras.so -t $out/lib/
+    install -D ./{tsearch_extras--1.0.sql,tsearch_extras.control} -t $out/share/extension
+  '';
+
+  meta = with stdenv.lib; {
+    description = "Provides a few PostgreSQL functions for a lower-level data full text search";
+    homepage = https://github.com/zulip/tsearch_extras/;
+    license = licenses.postgresql;
+    maintainers = with maintainers; [ DerTim1 ];
+  };
+}