Adds three coq libraries: containers, mathcomp, ssreflect

Containers is a reimplementation of the FSets/FMaps library from the
standard library, using typeclasses.

Homepage: http://coq.inria.fr/pylons/pylons/contribs/view/Containers/v8.4

The Mathematical Components (mathcomp) contains advanced theory files
covering a wide spectrum of mathematics.

Homepage: http://ssr.msr-inria.inria.fr/

Ssreflect is a proof language (plugin for Coq) and a small set of core
theory libraries about boolean, natural numbers, sequences, decidable
equality and finite types.

Homepage: http://ssr.msr-inria.inria.fr/

pkgs/development/coq-modules/mathcomp/default.nix

@@ -0,0 +1,24 @@
+{stdenv, fetchurl, coq, ssreflect}:
+
+stdenv.mkDerivation {
+
+  name = "coq-mathcomp-1.5";
+
+  src = fetchurl {
+    url = http://ssr.msr-inria.inria.fr/FTP/mathcomp-1.5.tar.gz;
+    sha256 = "1297svwi18blrlyd8vsqilar2h5nfixlvlifdkbx47aljq4m5bam";
+  };
+
+  propagatedBuildInputs = [ coq ssreflect ];
+
+  installFlags = "COQLIB=$(out)/lib/coq/${coq.coq-version}/";
+
+  meta = with stdenv.lib; {
+    homepage = http://ssr.msr-inria.inria.fr/;
+    license = licenses.cecill-b;
+    maintainers = [ maintainers.vbgl ];
+    platforms = coq.meta.platforms;
+    hydraPlatforms = [];
+  };
+
+}