txr: init at 208

Promoting from my NUR repo.

Build w/clang as it fixes test crash for some reason.

pkgs/tools/misc/txr/default.nix

@@ -0,0 +1,31 @@
+{ stdenv, fetchurl, bison, flex, libffi }:
+
+stdenv.mkDerivation rec {
+  name = "txr-${version}";
+  version = "208";
+
+  src = fetchurl {
+    url = "http://www.kylheku.com/cgit/txr/snapshot/${name}.tar.bz2";
+    sha256 = "091yki3a24pscwd0lg2ymy86r223amjnz9c71z4a2kxz5brhl5my";
+  };
+
+  nativeBuildInputs = [ bison flex ];
+  buildInputs = [ libffi ];
+
+  enableParallelBuilding = true;
+
+  doCheck = true;
+  checkTarget = "tests";
+
+  # Remove failing test-- mentions 'usr/bin' so probably related :)
+  preCheck = "rm -rf tests/017";
+
+  # TODO: install 'tl.vim', make avail when txr is installed or via plugin
+
+  meta = with stdenv.lib; {
+    description = "Programming language for convenient data munging";
+    license = licenses.bsd2;
+    homepage = http://nongnu.org/txr;
+    maintainers = with stdenv.lib.maintainers; [ dtzWill ];
+  };
+}

pkgs/top-level/all-packages.nix

@@ -5851,6 +5851,8 @@ in
   twitterBootstrap3 = callPackage ../development/web/twitter-bootstrap {};
   twitterBootstrap = twitterBootstrap3;
 
+  txr = callPackage ../tools/misc/txr { stdenv = clangStdenv; };
+
   txt2man = callPackage ../tools/misc/txt2man { };
 
   txt2tags = callPackage ../tools/text/txt2tags { };