Upgrade Go to 1.26.3 and update dependencies across functions

[aravindtga]

Motivation

This aligns the catalog dependency versions to the latest, preparing for a unified workspace where all repos can build together without version conflicts.

Key dependency upgrades:

• sigs.k8s.io/kustomize/api v0.20.1 → v0.21.1
• sigs.k8s.io/kustomize/kyaml v0.20.1 → v0.21.1
• k8s.io/apimachinery v0.34.1/v0.35.4 → v0.36.1
• github.com/kptdev/kpt v1.0.0-beta.61 → v1.0.0-beta.64
• github.com/imdario/mergo → dario.cat/mergo v1.0.2 (module path change)

Testing

• make all passes (fix, vet, fmt, test, lint)

AI usage disclosure

• AI assistance (Kiro CLI) was used to draft portions of this change, and this PR description.

[netlify]

✅ Deploy Preview for krm-function-catalog canceled.

Name	Link
🔨 Latest commit	d8f5cf5
🔍 Latest deploy log	https://app.netlify.com/projects/krm-function-catalog/deploys/6a140b4869afe90008d4a706

[aravindtga]

This needs to be rebased on top #1245 for the documentation fix.

[Copilot]

Pull request overview

This PR updates the repository’s Go toolchain version and aligns a broad set of Go module dependencies across the catalog functions/scripts to reduce cross-repo/workspace version conflicts, including the kustomize/k8s dependency stack and the mergo module path change.

Changes:

• Bump go directive across many modules to 1.26.3 and refresh dependency versions (kustomize, k8s.io, kpt, x/*, etc.).
• Migrate github.com/imdario/mergo import usage to dario.cat/mergo where applicable.
• Update several kyaml framework-based functions to use the newer ResourceList.Results patterns and refreshed dependency graph.

Reviewed changes

Copilot reviewed 27 out of 49 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
tests/e2etest/go.mod	Bumps Go version and refreshes e2e test module dependencies (kpt/k8s/kustomize stack).
scripts/generate_docs/main_test.go	Formatting-only alignment in tests.
scripts/generate_docs/go.mod	Bumps Go version and updates golang.org/x/text indirect dependency.
scripts/generate_docs/go.sum	Updates checksums for refreshed dependencies.
scripts/generate_docs/generate_docs.go	Formatting cleanup; minor whitespace fix in CutPrefix usage.
functions/go/upsert-resource/go.mod	Bumps Go version and updates kyaml/testify and related indirect deps.
functions/go/upsert-resource/go.sum	Updates checksums for refreshed dependencies.
functions/go/starlark/go.mod	Bumps Go version and updates starlark/k8s/kustomize/kpt dependencies.
functions/go/sleep/go.mod	Bumps Go version and updates kyaml to v0.21.1.
functions/go/sleep/go.sum	Updates checksums for kyaml v0.21.1.
functions/go/set-namespace/transformer/namespace.go	Refactors namespace pointer handling (currently introduces a compile error).
functions/go/set-namespace/go.mod	Bumps Go version and updates k8s/kustomize/kpt dependency set.
functions/go/set-labels/go.mod	Bumps Go version and updates k8s/kustomize/kpt dependency set.
functions/go/set-labels/go.sum	Updates checksums for refreshed dependencies.
functions/go/set-image/go.mod	Bumps Go version and updates k8s/kustomize/kpt dependency set.
functions/go/set-image/go.sum	Updates checksums for refreshed dependencies.
functions/go/set-enforcement-action/main.go	Updates kyaml framework result handling APIs/structures.
functions/go/set-enforcement-action/go.mod	Bumps Go version and updates kyaml/testify and related indirect deps.
functions/go/set-annotations/go.mod	Bumps Go version (dependency alignment for this function’s module).
functions/go/search-replace/main.go	Updates kyaml framework result handling APIs/structures.
functions/go/search-replace/go.mod	Bumps Go version and updates kyaml/doublestar/testify and related deps.
functions/go/render-helm-chart/third_party/sigs.k8s.io/kustomize/api/builtins/HelmChartInflationGenerator.go	Switches mergo import path to dario.cat/mergo.
functions/go/render-helm-chart/go.mod	Bumps Go version; updates mergo module path and dependency versions.
functions/go/remove-local-config-resources/main.go	Updates kyaml framework result handling APIs/structures.
functions/go/remove-local-config-resources/main_test.go	Updates tests to match new results return types.
functions/go/remove-local-config-resources/go.mod	Bumps Go version and updates kyaml/testify and related indirect deps.
functions/go/no-op/go.mod	Bumps Go version and updates k8s/kustomize/kpt dependency set.
functions/go/no-op/go.sum	Updates checksums for refreshed dependencies.
functions/go/list-setters/go.mod	Bumps Go version and updates kpt/kustomize dependency versions.
functions/go/kubeconform/go.mod	Bumps Go version and updates cobra/kpt/kustomize dependency versions.
functions/go/kubeconform/go.sum	Updates checksums for refreshed dependencies.
functions/go/generate-kpt-pkg-docs/go.mod	Bumps Go version; updates some deps but leaves kpt/kyaml versions inconsistent with PR description.
functions/go/generate-kpt-pkg-docs/go.sum	Updates checksums for refreshed dependencies.
functions/go/delete-annotations/go.mod	Bumps Go version and updates k8s/kustomize/kpt dependency set.
functions/go/delete-annotations/go.sum	Updates checksums for refreshed dependencies.
functions/go/apply-replacements/go.mod	Bumps Go version and updates kustomize api/kyaml dependency versions.
functions/go/apply-replacements/go.sum	Updates checksums for refreshed dependencies.
functions/go/annotate-apply-time-mutations/go.mod	Bumps Go version and updates apimachinery/kyaml dependency versions.
functions/go/annotate-apply-time-mutations/go.sum	Updates checksums for refreshed dependencies.
documentation/go.mod	Updates doc toolchain dependency (docsy).
documentation/go.sum	Updates checksums for refreshed doc dependencies.

Comments suppressed due to low confidence (3)

functions/go/set-namespace/transformer/namespace.go:240

• new(NestedStringOrDie(...)) is invalid Go syntax because new expects a type, not a function call result. This will not compile. Use a local variable and take its address, or allocate new(string) and assign the nested value into it before calling the visitor.
  functions/go/set-namespace/transformer/namespace.go:265
• new(o.GetNamespace()) is invalid Go syntax because new expects a type, not a value/expression. This will not compile. Allocate a string and assign the namespace, or revert to the previous namespace := o.GetNamespace(); nsPtr := &namespace pattern.
  functions/go/generate-kpt-pkg-docs/go.mod:11
• PR description says kpt is being upgraded to v1.0.0-beta.63 and kustomize/kyaml to v0.21.1, but this module still pins github.com/kptdev/kpt v1.0.0-beta.62.1 and sigs.k8s.io/kustomize/kyaml v0.20.1. If the goal is to align versions to avoid workspace conflicts, please update these to match the rest of the repo (or clarify in the PR description why this module must remain on older versions).

require (
	github.com/kptdev/kpt v1.0.0-beta.62.1
	github.com/kptdev/krm-functions-catalog/functions/go/list-setters v0.0.0-20251006065330-cad54762e815
	github.com/olekukonko/tablewriter v0.0.5
	github.com/stretchr/testify v1.11.1
	sigs.k8s.io/kustomize/kyaml v0.20.1
)

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.