The --no-start-daemon CLI flag was not respected for ostree-based installations. The ostree planner always started the daemon and fail if --no-start-daemon is passed.

To provide some context, I'm trying to build a custom bootc image with nix preinstalled. to achieve this, I have to run the nix-installer script during the build, when systemd is not yet started. Here is my error :

curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix |     sh -s -- install ostree --no-confirm --persistence=/var/lib/nix --no-start-daemon
info: downloading installer (https://install.determinate.systems/nix/tag/v3.9.1/nix-installer-x86_64-linux)
error: unexpected argument '--no-start-daemon' found

I noticed that the flag --no-start-daemon is working fine for linux setup but is not available with ostree, I barely know how to read rust, but the fix may be quite easy 🤞 :

https://github.com/DeterminateSystems/nix-installer/blob/main/src/planner/ostree.rs#L232

        plan.push(
-			ConfigureUpstreamInitService::plan(InitSystem::Systemd, true)
+            ConfigureUpstreamInitService::plan(InitSystem::Systemd, self.init_settings.start_daemon)
                .await
                .map_err(PlannerError::Action)?
                .boxed(),
        );
+        if self.init_settings.start_daemon {
            plan.push(
                StartSystemdUnit::plan("ensure-symlinked-units-resolve.service".to_string(), true)
                    .await
                    .map_err(PlannerError::Action)?
                    .boxed(),
            );
+        }

Steps to Reproduce:

Run the installer with --no-start-daemon on an ostree-based system (e.g., Fedora Silverblue) or setup a bootc image:

# Dockerfile - podman build -t nix-ostree-bootc .
FROM quay.io/fedora/fedora-bootc:latest
RUN curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | \
    sh -s -- install ostree --no-confirm --no-start-daemon --persistence=/var/lib/nix

Observe that the image build fails.