nixos-anywhere: fix trying to run sudo after kexec

This is unnecessary because we switch to using `root` after we kexec and
`nixos-images` provides an installer without `sudo` so this actively causes
installations to fail if a user wasn't already booted into a NixOS installer.

Author: Enzime

src/nixos-anywhere.sh

@@ -581,9 +581,6 @@ generateHardwareConfig() {
   mkdir -p "$(dirname "$hardwareConfigPath")"
   case "$hardwareConfigBackend" in
   nixos-facter)
-    if [[ ${isInstaller} == "y" ]]; then
-      maybeSudo=""
-    fi
     if [[ ${hasNixOSFacter} == "n" ]]; then
       step "Generating facter.json using nixos-facter from nixpkgs"
 
@@ -704,6 +701,9 @@ TMPDIR=/root/kexec setsid --wait ${maybeSudo} /root/kexec/kexec/run --kexec-extr
   # After kexec we explicitly set the user to root@
   sshConnection="root@${sshHost}"
 
+  # TODO: remove this after we reimport facts post-kexec and set this as a fact
+  maybeSudo=""
+
   # waiting for machine to become available again
   until runSsh -o ConnectTimeout=10 -- exit 0; do sleep 5; done
 }