coqPackages.fourcolor: init at 1.2.3

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

···
+{ lib, mkCoqDerivation, coq, mathcomp, version ? null }:
+with lib;
+
+mkCoqDerivation {
+  pname = "fourcolor";
+  owner = "math-comp";
+
+  release."1.2.3".rev    = "v1.2.3";
+  release."1.2.3".sha256 = "sha256-gwKfUa74fIP7j+2eQgnLD7AswjCtOFGHGaIWb4qI0n4=";
+
+  inherit version;
+  defaultVersion = with versions; switch mathcomp.version [
+    { case = pred.inter (isGe "1.11.0") (isLt "1.13"); out = "1.2.3"; }
+  ] null;
+
+  propagatedBuildInputs = [ mathcomp.algebra ];
+
+  meta = {
+    description = "Formal proof of the Four Color Theorem ";
+    maintainers = with maintainers; [ siraben ];
+    license = licenses.cecill-b;
+    platforms = platforms.unix;
+  };
+}

pkgs/top-level/coq-packages.nix

···
       equations = callPackage ../development/coq-modules/equations { };
       fiat_HEAD = callPackage ../development/coq-modules/fiat/HEAD.nix {};
       flocq = callPackage ../development/coq-modules/flocq {};
+      fourcolor = callPackage ../development/coq-modules/fourcolor {};
       gappalib = callPackage ../development/coq-modules/gappalib {};
       heq = callPackage ../development/coq-modules/heq {};
       hierarchy-builder = callPackage ../development/coq-modules/hierarchy-builder {};