coqPackages: refactor

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

@@ -1,38 +1,24 @@
-{ stdenv, fetchFromGitHub, coq, mathcomp-algebra }:
+{ lib, mkCoqDerivation, coq, mathcomp, version ? null }:
 
-let
-  version = "20190812";
-in
+with lib; mkCoqDerivation {
+  pname = "coq-bits";
+  repo = "bits";
+  inherit version;
+  defaultVersion = if versions.isGe "8.7" coq.version then "20190812" else null;
 
-stdenv.mkDerivation {
-  name = "coq${coq.coq-version}-coq-bits-${version}";
+  release."20190812".rev    = "1.0.0";
+  release."20190812".sha256 = "0nv5mdgrd075dpd8bc7h0xc5i95v0pkm0bfyq5rj6ii1s54dwcjl";
 
-  src = fetchFromGitHub {
-    owner = "coq-community";
-    repo = "bits";
-    rev = "1.0.0";
-    sha256 = "0nv5mdgrd075dpd8bc7h0xc5i95v0pkm0bfyq5rj6ii1s54dwcjl";
-  };
-
-  buildInputs = [ coq ];
-  propagatedBuildInputs = [ mathcomp-algebra ];
-
-  enableParallelBuilding = true;
+  propagatedBuildInputs = [ mathcomp.algebra ];
 
   installPhase = ''
     make -f Makefile CoqMakefile
     make -f CoqMakefile COQLIB=$out/lib/coq/${coq.coq-version}/ install
   '';
 
-  meta = with stdenv.lib; {
-    homepage = "https://github.com/coq-community/bits";
+  meta = {
     description = "A formalization of bitset operations in Coq";
     license = licenses.asl20;
     maintainers = with maintainers; [ ptival ];
-    platforms = coq.meta.platforms;
-  };
-
-  passthru = {
-    compatibleCoqVersions = v: builtins.elem v [ "8.7" "8.8" "8.9" "8.10" "8.11" "8.12" ];
   };
 }