populate: name the target's user in messages unless it's root

Messages naming the target, i.e. pruning's lines and the errors about
the sentinel, name the user as well, as user@host:path, unless the user
is root, the usual one, so deploying as another user, e.g. with sudo,
shows.

1 files changed, 5 insertions, 3 deletions

diff --git a/tests/scenarios.nix b/tests/scenarios.nix
index fea0a5a..90fe3cb 100644
--- a/tests/scenarios.nix
+++ b/tests/scenarios.nix
@@ -1050,9 +1050,11 @@ assert !(krops.isLocalTarget (targets.remote "/"));
           sources = { inherit (sources) a; b.symlink = "a"; };
           prune = true;
           output = map
-            (name: "pruning ${
-              optionalString (targetKind != "local") "${remoteHost}:"
-            }/var/krops/prune-${targetKind}/${name}")
+            (name: "pruning '${{
+              local = "";
+              remote = "${remoteHost}:";
+              sudo = "deploy@${remoteHost}:";
+            }.${targetKind}}/var/krops/prune-${targetKind}/${name}'...")
             [ "c" "d" "other" ];
           check = ''
             test -e "$T"/a/flake.nix || fail "a removed"