fix: improve runtime version parsing

pkg/config/config.go

@@ -1,11 +1,7 @@
 package config
 
 import (
-	"fmt"
-	"go/version"
 	"os"
-	"regexp"
-	"runtime"
 	"strings"
 
 	hcversion "github.com/hashicorp/go-version"
@@ -92,56 +88,3 @@ func detectGoVersion() string {
 
 	return "1.17"
 }
-
-// Trims the Go version to keep only M.m.
-// Since Go 1.21 the version inside the go.mod can be a patched version (ex: 1.21.0).
-// The version can also include information which we want to remove (ex: 1.21alpha1)
-// https://go.dev/doc/toolchain#versions
-// This a problem with staticcheck and gocritic.
-func trimGoVersion(v string) string {
-	if v == "" {
-		return ""
-	}
-
-	exp := regexp.MustCompile(`(\d\.\d+)(?:\.\d+|[a-z]+\d)`)
-
-	if exp.MatchString(v) {
-		return exp.FindStringSubmatch(v)[1]
-	}
-
-	return v
-}
-
-func getRuntimeGoVersion() string {
-	goVersion := runtime.Version()
-
-	parts := strings.Fields(goVersion)
-
-	if len(parts) == 0 {
-		return goVersion
-	}
-
-	// When using GOEXPERIMENT, the version returned might look something like "go1.23.0 X:boringcrypto".
-	return parts[0]
-}
-
-func checkGoVersion(goVersion string) error {
-	langVersion := version.Lang(getRuntimeGoVersion())
-
-	runtimeVersion, err := hcversion.NewVersion(strings.TrimPrefix(langVersion, "go"))
-	if err != nil {
-		return err
-	}
-
-	targetedVersion, err := hcversion.NewVersion(trimGoVersion(goVersion))
-	if err != nil {
-		return err
-	}
-
-	if runtimeVersion.LessThan(targetedVersion) {
-		return fmt.Errorf("the Go language version (%s) used to build golangci-lint is lower than the targeted Go version (%s)",
-			langVersion, goVersion)
-	}
-
-	return nil
-}

pkg/config/config_test.go

@@ -4,7 +4,6 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/require"
 )
 
 func TestIsGoGreaterThanOrEqual(t *testing.T) {
@@ -84,104 +83,3 @@ func TestIsGoGreaterThanOrEqual(t *testing.T) {
 		})
 	}
 }
-
-func Test_trimGoVersion(t *testing.T) {
-	testCases := []struct {
-		desc     string
-		version  string
-		expected string
-	}{
-		{
-			desc:     "patched version",
-			version:  "1.22.0",
-			expected: "1.22",
-		},
-		{
-			desc:     "minor version",
-			version:  "1.22",
-			expected: "1.22",
-		},
-		{
-			desc:     "RC version",
-			version:  "1.22rc1",
-			expected: "1.22",
-		},
-		{
-			desc:     "alpha version",
-			version:  "1.22alpha1",
-			expected: "1.22",
-		},
-		{
-			desc:     "beta version",
-			version:  "1.22beta1",
-			expected: "1.22",
-		},
-		{
-			desc:     "semver RC version",
-			version:  "1.22.0-rc1",
-			expected: "1.22",
-		},
-	}
-
-	for _, test := range testCases {
-		t.Run(test.desc, func(t *testing.T) {
-			t.Parallel()
-
-			version := trimGoVersion(test.version)
-			assert.Equal(t, test.expected, version)
-		})
-	}
-}
-
-func Test_checkGoVersion(t *testing.T) {
-	testCases := []struct {
-		desc    string
-		version string
-		require require.ErrorAssertionFunc
-	}{
-		{
-			desc:    "version greater than runtime version (patch)",
-			version: "1.30.1",
-			require: require.Error,
-		},
-		{
-			desc:    "version greater than runtime version (family)",
-			version: "1.30",
-			require: require.Error,
-		},
-		{
-			desc:    "version greater than runtime version (RC)",
-			version: "1.30.0-rc1",
-			require: require.Error,
-		},
-		{
-			desc:    "version equals to runtime version",
-			version: getRuntimeGoVersion(),
-			require: require.NoError,
-		},
-		{
-			desc:    "version lower than runtime version (patch)",
-			version: "1.19.1",
-			require: require.NoError,
-		},
-		{
-			desc:    "version lower than runtime version (family)",
-			version: "1.19",
-			require: require.NoError,
-		},
-		{
-			desc:    "version lower than runtime version (RC)",
-			version: "1.19.0-rc1",
-			require: require.NoError,
-		},
-	}
-
-	for _, test := range testCases {
-		t.Run(test.desc, func(t *testing.T) {
-			t.Parallel()
-
-			err := checkGoVersion(test.version)
-			test.require(t, err)
-		})
-	}
-}

pkg/config/loader.go

@@ -14,6 +14,7 @@ import (
 
 	"github.com/golangci/golangci-lint/pkg/exitcodes"
 	"github.com/golangci/golangci-lint/pkg/fsutils"
+	"github.com/golangci/golangci-lint/pkg/goutil"
 	"github.com/golangci/golangci-lint/pkg/logutils"
 )
 
@@ -74,7 +75,7 @@ func (l *Loader) Load(opts LoadOptions) error {
 
 	l.handleGoVersion()
 
-	err = checkGoVersion(l.cfg.Run.Go)
+	err = goutil.CheckGoVersion(l.cfg.Run.Go)
 	if err != nil {
 		return err
 	}
@@ -295,7 +296,7 @@ func (l *Loader) handleGoVersion() {
 		l.cfg.LintersSettings.Gofumpt.LangVersion = l.cfg.Run.Go
 	}
 
-	trimmedGoVersion := trimGoVersion(l.cfg.Run.Go)
+	trimmedGoVersion := goutil.TrimGoVersion(l.cfg.Run.Go)
 
 	l.cfg.LintersSettings.Revive.Go = trimmedGoVersion
 

pkg/goanalysis/runner_loadingpackage.go

@@ -9,15 +9,14 @@ import (
 	"go/types"
 	"os"
 	"reflect"
-	"runtime"
-	"strings"
 	"sync"
 	"sync/atomic"
 
 	"golang.org/x/tools/go/gcexportdata"
 	"golang.org/x/tools/go/packages"
 
 	"github.com/golangci/golangci-lint/pkg/goanalysis/load"
+	"github.com/golangci/golangci-lint/pkg/goutil"
 	"github.com/golangci/golangci-lint/pkg/logutils"
 )
 
@@ -153,12 +152,18 @@ func (lp *loadingPackage) loadFromSource(loadMode LoadMode) error {
 		return imp.Types, nil
 	}
 
+	// TODO(ldez) temporary workaround
+	rv, err := goutil.CleanRuntimeVersion()
+	if err != nil {
+		return err
+	}
+
 	tc := &types.Config{
 		Importer: importerFunc(importer),
 		Error: func(err error) {
 			pkg.Errors = append(pkg.Errors, lp.convertError(err)...)
 		},
-		GoVersion: getGoVersion(),
+		GoVersion: rv, // TODO(ldez) temporary workaround
 	}
 
 	_ = types.NewChecker(tc, pkg.Fset, pkg.Types, pkg.TypesInfo).Files(pkg.Syntax)
@@ -502,17 +507,3 @@ func sizeOfReflectValueTreeBytes(rv reflect.Value, visitedPtrs map[uintptr]struc
 		panic("unknown rv of type " + rv.String())
 	}
 }
-
-// TODO(ldez) temporary workaround
-func getGoVersion() string {
-	goVersion := runtime.Version()
-
-	parts := strings.Fields(goVersion)
-
-	if len(parts) == 0 {
-		return goVersion
-	}
-
-	// When using GOEXPERIMENT, the version returned might look something like "go1.23.0 X:boringcrypto".
-	return parts[0]
-}

pkg/goutil/version.go

@@ -0,0 +1,75 @@
+package goutil
+
+import (
+	"fmt"
+	"go/version"
+	"regexp"
+	"runtime"
+	"strings"
+
+	hcversion "github.com/hashicorp/go-version"
+)
+
+func CheckGoVersion(goVersion string) error {
+	rv, err := CleanRuntimeVersion()
+	if err != nil {
+		return fmt.Errorf("clean runtime version: %w", err)
+	}
+
+	langVersion := version.Lang(rv)
+
+	runtimeVersion, err := hcversion.NewVersion(strings.TrimPrefix(langVersion, "go"))
+	if err != nil {
+		return err
+	}
+
+	targetedVersion, err := hcversion.NewVersion(TrimGoVersion(goVersion))
+	if err != nil {
+		return err
+	}
+
+	if runtimeVersion.LessThan(targetedVersion) {
+		return fmt.Errorf("the Go language version (%s) used to build golangci-lint is lower than the targeted Go version (%s)",
+			langVersion, goVersion)
+	}
+
+	return nil
+}
+
+// TrimGoVersion Trims the Go version to keep only M.m.
+// Since Go 1.21 the version inside the go.mod can be a patched version (ex: 1.21.0).
+// The version can also include information which we want to remove (ex: 1.21alpha1)
+// https://go.dev/doc/toolchain#versions
+// This a problem with staticcheck and gocritic.
+func TrimGoVersion(v string) string {
+	if v == "" {
+		return ""
+	}
+
+	exp := regexp.MustCompile(`(\d\.\d+)(?:\.\d+|[a-z]+\d)`)
+
+	if exp.MatchString(v) {
+		return exp.FindStringSubmatch(v)[1]
+	}
+
+	return v
+}
+
+func CleanRuntimeVersion() (string, error) {
+	return cleanRuntimeVersion(runtime.Version())
+}
+
+func cleanRuntimeVersion(rv string) (string, error) {
+	parts := strings.Fields(rv)
+
+	for _, part := range parts {
+		// Allow to handle:
+		// - GOEXPERIMENT -> "go1.23.0 X:boringcrypto"
+		// - devel -> "devel go1.24-e705a2d Wed Aug 7 01:16:42 2024 +0000 linux/amd64"
+		if strings.HasPrefix(part, "go1.") {
+			return part, nil
+		}
+	}
+
+	return "", fmt.Errorf("invalid Go runtime version: %s", rv)
+}