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build: Add kube-api-linter
Validates upstream API conventions are correctly applied.
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‎.github/workflows/checks.yml

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@@ -132,21 +132,37 @@ jobs:
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with:
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enable-cache: true
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- name: Export golang and golangci-lint versions
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id: versions
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- name: golangci-lint
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env:
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REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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run: |
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echo "golangci-lint=$(devbox run -- golangci-lint version --short)" >>"${GITHUB_OUTPUT}"
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echo "golang=$(devbox run -- go version | grep -o "[[:digit:]]\+.[[:digit:]]\+\(.[[:digit:]]\+\)\?")" >>"${GITHUB_OUTPUT}"
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devbox run golangci-lint run --config=${{ github.workspace }}/.golangci.yml --output.text.path=stdout ./... | \
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devbox run reviewdog -f=golangci-lint -reporter=github-pr-review --fail-level=any
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working-directory: ${{ matrix.module }}
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- name: golangci-lint
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uses: reviewdog/action-golangci-lint@v2
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lint-api:
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runs-on: ubuntu-24.04
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permissions:
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pull-requests: write
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steps:
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- name: Check out code
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uses: actions/checkout@v4
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- name: Install devbox
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uses: jetify-com/[email protected]
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with:
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fail_level: error
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reporter: github-pr-review
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golangci_lint_version: v${{ steps.versions.outputs.golangci-lint }}
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go_version: v${{ steps.versions.outputs.golang }}
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workdir: ${{ matrix.module }}
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golangci_lint_flags: "--config=${{ github.workspace }}/.golangci.yml"
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enable-cache: true
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- name: Install kube-api-linter
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run: devbox run make hack/tools/golangci-lint-kube-api-linter
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- name: golangci-lint-kube-api-linter
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env:
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REVIEWDOG_GITHUB_API_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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run: |
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${{ github.workspace }}/hack/tools/golangci-lint-kube-api-linter run --config=${{ github.workspace }}/.golangci.yml --output.text.path=stdout ./... | \
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devbox run reviewdog -name=kube=api-linter -f=golangci-lint -reporter=github-pr-review --fail-level=any
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working-directory: api
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lint-gha:
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runs-on: ubuntu-24.04

‎.gitignore

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@@ -50,3 +50,4 @@ test/e2e/config/caren-envsubst.yaml
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hack/tools/fetch-images/fetch-images
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caren-images.txt
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hack/examples/release/*-cluster-class.yaml
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golangci-lint-kube-api-linter

‎.golangci-kal.yml

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# Copyright 2025 Nutanix. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0
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version: "2"
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linters:
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default: none
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enable:
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- kubeapilinter # linter for Kube API conventions
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settings:
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custom:
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kubeapilinter:
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type: module
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description: KAL is the Kube-API-Linter and lints Kube like APIs based on API conventions and best practices.
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settings:
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linters:
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enable:
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# - "commentstart" # Ensure comments start with the serialized version of the field name.
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# - "conditions" # Ensure conditions have the correct json tags and markers.
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- "duplicatemarkers" # Ensure there are no exact duplicate markers. for types and fields.
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- "integers" # Ensure only int32 and int64 are used for integers.
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- "jsontags" # Ensure every field has a json tag.
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- "maxlength" # Ensure all strings and arrays have maximum lengths/maximum items.
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- "nobools" # Bools do not evolve over time, should use enums instead.
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- "nofloats" # Ensure floats are not used.
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- "nomaps" # Ensure maps are not used.
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# "nophase" # Ensure phases are not used, as they are not extensible.
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- "optionalfields" # Ensure that all fields marked as optional adhere to being pointers and
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# having the `omitempty` value in their `json` tag where appropriate.
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- "optionalorrequired" # Every field should be marked as `+optional` or `+required`.
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- "requiredfields" # Required fields should not be pointers, and should not have `omitempty`.
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# - "ssatags" # Ensure array fields have the appropriate listType markers
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# - "statusoptional" # Ensure all first children within status should be optional.
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# - "statussubresource" # All root objects that have a `status` field should have a status subresource.
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- "uniquemarkers" # Ensure that types and fields do not contain more than a single definition of a marker that should only be present once.
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# Linters below this line are disabled, pending conversation on how and when to enable them.
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disable:
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- "*" # We will manually enable new linters after understanding the impact. Disable all by default.
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lintersConfig:
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optionalfields:
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pointers:
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preference: WhenRequired # Always | WhenRequired # Whether to always require pointers, or only when required. Defaults to `Always`.
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# jsontags:
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# jsonTagRegex: "^[a-z][a-z0-9]*(?:[A-Z][a-z0-9]*)*$" # The default regex is appropriate for our use case.
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optionalorrequired:
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preferredOptionalMarker: kubebuilder:validation:Optional # The preferred optional marker to use, fixes will suggest to use this marker. Defaults to `optional`.
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preferredRequiredMarker: kubebuilder:validation:Required # The preferred required marker to use, fixes will suggest to use this marker. Defaults to `required`.
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exclusions:
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generated: strict
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paths:
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# Ignore generated files.
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- zz_generated.*\.go$
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# Ignore external API packages.
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- external/
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# Ignore test files.
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- '.+_test\.go$'
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issues:
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max-same-issues: 0
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max-issues-per-linter: 0

‎.pre-commit-config.yaml

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@@ -26,6 +26,12 @@ repos:
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language: system
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files: "(.*\\.go|go.mod|go.sum|go.mk)$"
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pass_filenames: false
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- id: kube-api-linter
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name: kube-api-linter
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entry: make lint-kube-api
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language: system
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files: "((^api/(.*\\.go|go.mod|go.sum))|go.mk)$"
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pass_filenames: false
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- id: chart-docs
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name: chart-docs
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entry: make chart-docs

‎devbox.json

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"kubernetes-controller-tools@latest",
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"kustomize@latest",
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"pre-commit@latest",
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"reviewdog@latest",
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"rsync@latest",
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"setup-envtest@latest",
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"shfmt@latest",

‎devbox.lock

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}
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}
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},
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"reviewdog@latest": {
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"last_modified": "2025-06-20T02:24:11Z",
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"resolved": "github:NixOS/nixpkgs/076e8c6678d8c54204abcb4b1b14c366835a58bb#reviewdog",
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"source": "devbox-search",
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"version": "0.20.3",
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"systems": {
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"aarch64-darwin": {
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"outputs": [
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{
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"name": "out",
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"path": "/nix/store/3yyxphpj15k63glrjhks2gkpj0ni9snf-reviewdog-0.20.3",
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"default": true
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}
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],
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"store_path": "/nix/store/3yyxphpj15k63glrjhks2gkpj0ni9snf-reviewdog-0.20.3"
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},
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"aarch64-linux": {
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"outputs": [
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{
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"name": "out",
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"path": "/nix/store/drhvxi0lcpa5drqvh3asqll3kak7g2ja-reviewdog-0.20.3",
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"default": true
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}
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],
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"store_path": "/nix/store/drhvxi0lcpa5drqvh3asqll3kak7g2ja-reviewdog-0.20.3"
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},
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"x86_64-darwin": {
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"outputs": [
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{
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"name": "out",
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"path": "/nix/store/i6cknyqzrvzzpzjh9n267y4b15zdxc6n-reviewdog-0.20.3",
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"default": true
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}
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],
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"store_path": "/nix/store/i6cknyqzrvzzpzjh9n267y4b15zdxc6n-reviewdog-0.20.3"
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},
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"x86_64-linux": {
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"outputs": [
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{
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"name": "out",
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"path": "/nix/store/15vfbrwqpi0z4d97790vs7cr5ysz6srd-reviewdog-0.20.3",
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"default": true
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}
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],
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"store_path": "/nix/store/15vfbrwqpi0z4d97790vs7cr5ysz6srd-reviewdog-0.20.3"
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}
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}
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},
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"rsync@latest": {
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"last_modified": "2025-07-13T22:45:35Z",
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"resolved": "github:NixOS/nixpkgs/a421ac6595024edcfbb1ef950a3712b89161c359#rsync",

‎hack/tools/.custom-gcl.yml

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# Copyright 2025 Nutanix. All rights reserved.
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# SPDX-License-Identifier: Apache-2.0
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version: v2.2.1
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name: golangci-lint-kube-api-linter
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plugins:
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- module: 'sigs.k8s.io/kube-api-linter'
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version: v0.0.0-20250710131328-b566fe88b732

‎make/go.mk

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endif
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GOLANGCI_CONFIG_FILE ?= $(wildcard $(REPO_ROOT)/.golangci.y*ml)
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GOLANGCI_KAL_CONFIG_FILE ?= $(wildcard $(REPO_ROOT)/.golangci-kal.y*ml)
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.PHONY:fmt
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fmt: ## Runs golangci-lint fmt for all modules in repository
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lint.%: fmt.% ; $(info $(M) linting $* module)
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$(if $(filter-out root,$*),cd $* && )golangci-lint run --fix --config=$(GOLANGCI_CONFIG_FILE)
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.PHONY: lint-kube-api
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lint-kube-api: ## Runs kube-api-linter via custom golangci-lint configuration
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lint-kube-api: go-generate hack/tools/golangci-lint-kube-api-linter
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lint-kube-api: ; $(info $(M) running kube-api-linter)
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cd api && $(PWD)/hack/tools/golangci-lint-kube-api-linter run --fix --config=$(PWD)/.golangci-kal.yml
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hack/tools/golangci-lint-kube-api-linter: hack/tools/.custom-gcl.yml
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hack/tools/golangci-lint-kube-api-linter: ; $(info $(M) installing golangci-lint-kube-api-linter tool)
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cd hack/tools && golangci-lint custom
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.PHONY: mod-tidy
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mod-tidy: ## Run go mod tidy for all modules
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ifneq ($(wildcard $(REPO_ROOT)/go.mod),)

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