🐛 (alpha generate command): Ensure kubebuilder reuses its own binary instead of relying on $PATH

[ashishkpathak-connect]

Fix Kubebuilder executable path not found for kubebuilder alpha generate command.

Fixes #4900

[linux-foundation-easycla]

• ✅login: ashishkpathak-connect / name: Ashish K Pathak / (816d650)

The committers listed above are authorized under a signed CLA.

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[ashishkpathak-connect]

Upon checking os.Executable() api, I found that it has a support for darwin too. Details at https://cs.opensource.google/go/go/+/refs/tags/go1.25.1:src/os/executable_darwin.go

So, I used os.Executable to ensure the binary "kubebuilder" which was invoked to call kubebuilder alpha generate is the one which calls kubebuilder init.

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[ashishkpathak-connect]

Upon checking os.Executable() api, I found that it has a support for darwin too. Details at https://cs.opensource.google/go/go/+/refs/tags/go1.25.1:src/os/executable_darwin.go

So, I used os.Executable to ensure the binary "kubebuilder" which was invoked to call kubebuilder alpha generate is the one which calls kubebuilder init.

Below Test shows kubebuilder executable was correctly invoked even though it didn't not exist in PATH.

bash-3.2$ which kubebuilder
bash-3.2$ echo $?
1
bash-3.2$ basename pwd
test4
bash-3.2$ ~/opensource2/kubebuilder/bin/kubebuilder alpha generate
WARN Using current working directory to re-scaffold the project
WARN This directory will be cleaned up and all files removed before the re-generation
INFO Cleaning directory dir=
INFO Running cleanup
INFO Running cleanup
INFO kubebuilder init
INFO Writing kustomize manifests for you to edit...
INFO Writing scaffold for you to edit...
INFO Get controller runtime
INFO Update dependencies

[camilamacedo86]

Will it work fine for Mac os as well?

[ashishkpathak-connect]

Yes Camila. Below is a test from Mac os which shows it worked successfully:

bash-3.2$ sw_vers | head -n 2
ProductName:            macOS
ProductVersion:         15.6.1
bash-3.2$ basename `pwd`
test4
bash-3.2$ which kubebuilder
bash-3.2$ echo $?
1
bash-3.2$ ~/opensource2/kubebuilder/bin/kubebuilder alpha generate
WARN Using current working directory to re-scaffold the project 
WARN This directory will be cleaned up and all files removed before the re-generation 
INFO Cleaning directory dir=/tmp/test4
INFO Running cleanup 
INFO Running cleanup 
INFO kubebuilder init 
INFO Writing kustomize manifests for you to edit... 
INFO Writing scaffold for you to edit... 
INFO Get controller runtime 
INFO Update dependencies 
Next: define a resource with:
$ kubebuilder create api
INFO Grafana plugin not found, skipping migration 
INFO Auto Update plugin not found, skipping migration 
INFO Deploy-image plugin not found, skipping migration 
INFO Running make manifests 
mkdir -p /tmp/test4/bin
Downloading sigs.k8s.io/controller-tools/cmd/controller-gen@v0.19.0
/tmp/test4/bin/controller-gen rbac:roleName=manager-role crd webhook paths="./..." output:crd:artifacts:config=config/crd/bases
INFO Running make generate 
/tmp/test4/bin/controller-gen object:headerFile="hack/boilerplate.go.txt" paths="./..."
INFO Running make fmt 
go fmt ./...
INFO Running make vet 
go vet ./...
INFO Running make lint-fix 
Downloading github.com/golangci/golangci-lint/v2/cmd/golangci-lint@v2.4.0
/tmp/test4/bin/golangci-lint run --fix
0 issues.
bash-3.2$ echo $?
0

[camilamacedo86]

/ok-to-test

[camilamacedo86]

/lgtm
/ok-to-test

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: ashishkpathak-connect, camilamacedo86

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