versionCheckHook: use current coreutils env (#474203)

pkgs/by-name/ve/versionCheckHook/hook.sh

@@ -10,7 +10,7 @@ _handleCmdOutput(){
       done
     fi
 
-    versionOutput="$(env \
+    versionOutput="$(@envCommand@ \
         --chdir=/ \
         --argv0="$(basename "${command[0]}")" \
         "${envArgs[@]}" \

pkgs/by-name/ve/versionCheckHook/package.nix

@@ -1,12 +1,14 @@
 {
   lib,
   makeSetupHook,
+  coreutils,
 }:
 
 makeSetupHook {
   name = "version-check-hook";
   substitutions = {
     storeDir = builtins.storeDir;
+    envCommand = lib.getExe' coreutils "env"; # Cannot call it env, because it isn't an attrset of environment variables!
   };
   meta = {
     description = "Lookup for $version in the output of --help and --version";