kbfs: 2.11.0 -> 4.1.0

The kbfs code has been moved to the same
repo as the keybase package.

pkgs/tools/security/keybase/kbfs.nix

@@ -0,0 +1,22 @@
+{ stdenv, buildGoPackage, fetchFromGitHub, keybase }:
+
+buildGoPackage rec {
+  pname = "kbfs";
+
+  inherit (keybase) src version;
+
+  goPackagePath = "github.com/keybase/client";
+  subPackages = [ "go/kbfs/kbfsfuse" "go/kbfs/kbfsgit/git-remote-keybase" ];
+
+  dontRenameImports = true;
+
+  buildFlags = [ "-tags production" ];
+
+  meta = with stdenv.lib; {
+    homepage = https://www.keybase.io;
+    description = "The Keybase FS FUSE driver";
+    platforms = platforms.unix;
+    maintainers = with maintainers; [ rvolosatovs bennofs np ];
+    license = licenses.bsd3;
+  };
+}