harec: expose qbe through passthru

harec and hare should always have the same qbe package. By exposing the
latter under harec's passthru attribute and using it as hare's qbe, we
assure that they will always hare the same qbe package even if there's a
need for a local overlay.

pkgs/by-name/ha/hare/package.nix

@@ -3,7 +3,6 @@
   stdenv,
   fetchFromSourcehut,
   harec,
-  qbe,
   gitUpdater,
   scdoc,
   tzdata,
@@ -33,6 +32,7 @@ assert
   '';
 
 let
+  inherit (harec) qbe;
   buildArch = stdenv.buildPlatform.uname.processor;
   arch = stdenv.hostPlatform.uname.processor;
   platform = lib.toLower stdenv.hostPlatform.uname.system;

pkgs/by-name/ha/harec/package.nix

@@ -53,6 +53,8 @@ stdenv.mkDerivation (finalAttrs: {
 
   passthru = {
     updateScript = gitUpdater { };
+    # To be kept in sync with the hare package.
+    inherit qbe;
   };
 
   meta = {