Add version package to allow test imports

Signed-off-by: yxxhero <aiopsclub@163.com>

pkg/app/init.go

@@ -14,13 +14,14 @@ import (
 	"helm.sh/helm/v3/pkg/cli"
 
 	"github.com/helmfile/helmfile/pkg/helmexec"
+	"github.com/helmfile/helmfile/pkg/version"
 )
 
 var (
 	manuallyInstallCode   = 1
 	windowPackageManagers = map[string]string{
-		"scoop": fmt.Sprintf("scoop install helm@%s", strings.TrimLeft(HelmRecommendedVersion, "v")),
-		"choco": fmt.Sprintf("choco install kubernetes-helm --version %s", strings.TrimLeft(HelmRecommendedVersion, "v")),
+		"scoop": fmt.Sprintf("scoop install helm@%s", strings.TrimLeft(version.HelmRecommendedVersion, "v")),
+		"choco": fmt.Sprintf("choco install kubernetes-helm --version %s", strings.TrimLeft(version.HelmRecommendedVersion, "v")),
 	}
 )
 
@@ -90,7 +91,7 @@ func (h *HelmfileInit) InstallHelm() error {
 		return h.installHelmOnWindows()
 	}
 
-	err := h.WhetherContinue(fmt.Sprintf("use: '%s'", HelmInstallCommand))
+	err := h.WhetherContinue(fmt.Sprintf("use: '%s'", version.HelmInstallCommand))
 	if err != nil {
 		return err
 	}
@@ -102,14 +103,14 @@ func (h *HelmfileInit) InstallHelm() error {
 	if err != nil {
 		return err
 	}
-	err = downloadfile(getHelmScript.Name(), HelmInstallCommand)
+	err = downloadfile(getHelmScript.Name(), version.HelmInstallCommand)
 	if err != nil {
 		return err
 	}
 	_, err = h.runner.Execute("bash", []string{
 		getHelmScript.Name(),
 		"--version",
-		HelmRecommendedVersion,
+		version.HelmRecommendedVersion,
 	}, nil, true)
 	if err != nil {
 		return err
@@ -182,7 +183,7 @@ func (h *HelmfileInit) CheckHelm() error {
 	if err != nil {
 		return err
 	}
-	requiredHelmVersion, _ := semver.NewVersion(HelmRequiredVersion)
+	requiredHelmVersion, _ := semver.NewVersion(version.HelmRequiredVersion)
 	if helmversion.LessThan(requiredHelmVersion) {
 		h.logger.Infof("helm version is too low, the current version is %s, the required version is %s", helmversion, requiredHelmVersion)
 		err = h.UpdateHelm()

pkg/version/README.md

@@ -0,0 +1,38 @@
+# Version Package
+
+## Overview
+
+The `version` package contains version-related constants and utilities used throughout the Helmfile codebase. It was created as a standalone package to avoid import cycles while making version information accessible to all components.
+
+## Contents
+
+This package includes:
+
+- `HelmRequiredVersion`: The minimum required Helm version for Helmfile
+- Other version-related constants and utilities
+
+## Usage
+
+Import this package when you need access to version information:
+
+```go
+import "github.com/helmfile/helmfile/pkg/version"
+
+func someFunction() {
+    // Use version constants
+    requiredVersion := version.HelmRequiredVersion
+
+    // Example usage
+    fmt.Printf("Helmfile requires Helm version %s or later\n", requiredVersion)
+}
+```
+
+## Design Considerations
+
+This package is intentionally isolated from other Helmfile packages to prevent import cycles. It should:
+
+- Contain only version-related constants and simple utilities
+- Not import other Helmfile packages
+- Be kept minimal to serve its specific purpose
+
+When adding new version-related functionality, ensure it belongs here rather than in a more specific package.

pkg/version/versions.go

@@ -0,0 +1,11 @@
+package version
+
+const (
+	HelmRequiredVersion           = "v3.16.4"
+	HelmRecommendedVersion        = "v3.17.2"
+	HelmDiffRecommendedVersion    = "v3.11.0"
+	HelmSecretsRecommendedVersion = "v4.6.0"
+	HelmGitRecommendedVersion     = "v0.15.1"
+	HelmS3RecommendedVersion      = "v0.16.0"
+	HelmInstallCommand            = "https://raw.githubusercontent.com/helm/helm/main/scripts/get-helm-3"
+)