The guard ran `grep -qx "flux: v${FLUX_VERSION}"`, where the dots in the
version are regex metacharacters, so a client printing `flux: v2X8X6`
would satisfy it. Use `grep -Fqx` for a fixed-string match in the build
toolchain guards this change added.
Also correct the step comments that still read "install if absent
(idempotent)": the step now installs whenever the pinned version is not
the one present, not only when flux is missing.
Assisted-by: LLM
Signed-off-by: IvanHunters <xorokhotnikov@gmail.com>
IvanHunters
95e68bad86