dyff-1.8.0 fails to work with kustomize build and kubectl diff

[phlo46]

dyff 1.8.0, installed with a prebuilt linux_amd64 binary, does not work well with kustomize, kubectl.

export KUBECTL_EXTERNAL_DIFF="dyff-1.8.0 between --omit-header --set-exit-code"

kustomize-5.2.1 build overlays/dev | kubectl-1.30.2 diff -f -

Returns error:

╭ Error occurred
│ unknown command "/tmp/LIVE-3181116135" for "dyff-1.8.0"
╵
error: failed to run "dyff": exit status 255

My default kubectl diff output looks like this:

diff -u -N /tmp/LIVE-2884575271/admissionregistration.k8s.io.v1.MutatingWebhookConfiguration..admission-webhook-mutating-webhook-configuration /tmp/MERGED-4097369848/admissionregistration.k8s.io.v1.MutatingWebhookConfiguration..admission-webhook-mutating-webhook-configuration

--- /tmp/LIVE-2884575271/admissionregistration.k8s.io.v1.MutatingWebhookConfiguration..admission-webhook-mutating-webhook-configuration	2024-07-23 14:59:27.954053635 +0700
+++ /tmp/MERGED-4097369848/admissionregistration.k8s.io.v1.MutatingWebhookConfiguration..admission-webhook-mutating-webhook-configuration	2024-07-23 14:59:27.954053635 +0700

So I think this issue is very similar to #235 but I install dyff with prebuilt binaries, not via snap.

But if I use dyff-1.7.1, it works as expected:

export KUBECTL_EXTERNAL_DIFF="dyff-1.7.1 between --omit-header --set-exit-code"

I guess that the new 1.8.0 version may have a breaking change.