thicket: crystal_1_0 → crystal

pkgs/applications/version-management/git-and-tools/thicket/default.nix

···
 { lib
 , fetchFromGitHub
-, crystal_1_0
+, crystal
 }:
 
-let
-  crystal = crystal_1_0;
-
-in crystal.buildCrystalPackage rec {
+crystal.buildCrystalPackage rec {
   pname = "thicket";
   version = "0.1.5";