link-grammar: Improve

- Add meta.changelog
- Correct license
- Run tests
- Add quick smoke test to passthru.tests

pkgs/tools/text/link-grammar/default.nix

@@ -1,6 +1,8 @@
-{ lib, stdenv, fetchurl, pkg-config, python3, sqlite, libedit, zlib }:
+{ lib, stdenv, fetchurl, pkg-config, python3, sqlite, libedit, zlib, runCommand, dieHook }:
 
-stdenv.mkDerivation rec {
+let
+
+link-grammar = stdenv.mkDerivation rec {
   version = "5.8.1";
   pname = "link-grammar";
 
@@ -18,11 +20,30 @@ stdenv.mkDerivation rec {
     "--disable-java-bindings"
   ];
 
+  doCheck = true;
+
+  passthru.tests = {
+    quick = runCommand "link-grammar-quick-test" {
+      buildInputs = [
+        link-grammar
+        dieHook
+      ];
+    } ''
+      echo "Furiously sleep ideas green colorless." | link-parser en | grep "No complete linkages found." || die "Grammaticaly invalid sentence was parsed."
+      echo "Colorless green ideas sleep furiously." | link-parser en | grep "Found .* linkages." || die "Grammaticaly valid sentence was not parsed."
+      touch $out
+    '';
+  };
+
   meta = with lib; {
     description = "A Grammar Checking library";
     homepage = "https://www.abisource.com/projects/link-grammar/";
-    license = licenses.lgpl21;
+    changelog = "https://github.com/opencog/link-grammar/blob/link-grammar-${version}/ChangeLog";
+    license = licenses.lgpl21Only;
     maintainers = with maintainers; [ jtojnar ];
     platforms = platforms.unix;
   };
-}
+};
+
+in
+  link-grammar