krops writeDeploy: pass --use-remote-sudo only with a separate build target

For targets using sudo, writeDeploy runs nixos-rebuild on the target via
sudo, so --use-remote-sudo has no effect there.  It only matters when
nixos-rebuild runs on a separate build target and activates the system
on the target, so writeDeploy passes it only then.

A new VM test, deploy, runs writeDeploy with a stand-in for
nixos-rebuild, which records the user it runs as, NIX_PATH, and its
arguments, for deploying flakes and other sources, with and without a
separate build target, to every kind of target.

1 files changed, 8 insertions, 0 deletions

diff --git a/tests/nixos-rebuild.sh b/tests/nixos-rebuild.sh
new file mode 100755
index 0000000..9e2e47e
--- /dev/null
+++ b/tests/nixos-rebuild.sh
@@ -0,0 +1,8 @@
+#! /bin/sh
+# Stands in for nixos-rebuild: records the user it runs as, NIX_PATH, and its
+# arguments in /tmp/nixos-rebuild.log.
+{
+  id -u
+  printf '%s\n' "${NIX_PATH-}"
+  printf '%s\n' "$*"
+} > /tmp/nixos-rebuild.log