refactor: bump minimum required Go version to 1.23.0 (#112)

We always keep the minimum Go version requirement in sync with
`golang.org/x/mod` to ensure we don't fall too far behind on new Go
features.

Signed-off-by: Aofei Sheng <aofei@aofeisheng.com>

.github/workflows/test.yaml

@@ -12,7 +12,6 @@ jobs:
     strategy:
       matrix:
         go:
-          - 1.22.x
           - 1.23.x
           - 1.24.x
     steps:

go.mod

@@ -1,11 +1,11 @@
 module github.com/goproxy/goproxy
 
-go 1.22.0
+go 1.23.0
 
 require (
-	github.com/minio/minio-go/v7 v7.0.86
-	github.com/spf13/cobra v1.9.0
-	golang.org/x/mod v0.23.0
+	github.com/minio/minio-go/v7 v7.0.88
+	github.com/spf13/cobra v1.9.1
+	golang.org/x/mod v0.24.0
 )
 
 require (

go.sum

@@ -20,23 +20,23 @@ github.com/minio/crc64nvme v1.0.1 h1:DHQPrYPdqK7jQG/Ls5CTBZWeex/2FMS3G5XGkycuFrY
 github.com/minio/crc64nvme v1.0.1/go.mod h1:eVfm2fAzLlxMdUGc0EEBGSMmPwmXD5XiNRpnu9J3bvg=
 github.com/minio/md5-simd v1.1.2 h1:Gdi1DZK69+ZVMoNHRXJyNcxrMA4dSxoYHZSQbirFg34=
 github.com/minio/md5-simd v1.1.2/go.mod h1:MzdKDxYpY2BT9XQFocsiZf/NKVtR7nkE4RoEpN+20RM=
-github.com/minio/minio-go/v7 v7.0.86 h1:DcgQ0AUjLJzRH6y/HrxiZ8CXarA70PAIufXHodP4s+k=
-github.com/minio/minio-go/v7 v7.0.86/go.mod h1:VbfO4hYwUu3Of9WqGLBZ8vl3Hxnxo4ngxK4hzQDf4x4=
+github.com/minio/minio-go/v7 v7.0.88 h1:v8MoIJjwYxOkehp+eiLIuvXk87P2raUtoU5klrAAshs=
+github.com/minio/minio-go/v7 v7.0.88/go.mod h1:33+O8h0tO7pCeCWwBVa07RhVVfB/3vS4kEX7rwYKmIg=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
 github.com/rs/xid v1.6.0 h1:fV591PaemRlL6JfRxGDEPl69wICngIQ3shQtzfy2gxU=
 github.com/rs/xid v1.6.0/go.mod h1:7XoLgs4eV+QndskICGsho+ADou8ySMSjJKDIan90Nz0=
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
-github.com/spf13/cobra v1.9.0 h1:Py5fIuq/lJsRYxcxfOtsJqpmwJWCMOUy2tMJYV8TNHE=
-github.com/spf13/cobra v1.9.0/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wxYW0=
+github.com/spf13/cobra v1.9.1 h1:CXSaggrXdbHK9CF+8ywj8Amf7PBRmPCOJugH954Nnlo=
+github.com/spf13/cobra v1.9.1/go.mod h1:nDyEzZ8ogv936Cinf6g1RU9MRY64Ir93oCnqb9wxYW0=
 github.com/spf13/pflag v1.0.6 h1:jFzHGLGAlb3ruxLB8MhbI6A8+AQX/2eW4qeyNZXNp2o=
 github.com/spf13/pflag v1.0.6/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 golang.org/x/crypto v0.33.0 h1:IOBPskki6Lysi0lo9qQvbxiQ+FvsCC/YWOecCHAixus=
 golang.org/x/crypto v0.33.0/go.mod h1:bVdXmD7IV/4GdElGPozy6U7lWdRXA4qyRVGJV57uQ5M=
-golang.org/x/mod v0.23.0 h1:Zb7khfcRGKk+kqfxFaP5tZqCnDZMjC5VtUBs87Hr6QM=
-golang.org/x/mod v0.23.0/go.mod h1:6SkKJ3Xj0I0BrPOZoBy3bdMptDDU9oJrpohJ3eWZ1fY=
+golang.org/x/mod v0.24.0 h1:ZfthKaKaT4NrhGVZHO1/WDTwGES4De8KtWO0SIbNJMU=
+golang.org/x/mod v0.24.0/go.mod h1:IXM97Txy2VM4PJ3gI61r1YEk/gAj6zAHN3AdZt6S9Ww=
 golang.org/x/net v0.35.0 h1:T5GQRQb2y08kTAByq9L4/bz8cipCdA8FbRTXewonqY8=
 golang.org/x/net v0.35.0/go.mod h1:EglIi67kWsHKlRzzVMUD93VMSWGFOMSZgxFjparz1Qk=
 golang.org/x/sys v0.30.0 h1:QjkSwP/36a20jFYWkSue1YwXzLmsV5Gfq7Eiy72C1uc=

goproxy.go

@@ -70,7 +70,7 @@ type Goproxy struct {
 	// Logger is used to log messages that occur during proxying. It is
 	// currently used only for error messages.
 	//
-	// If Logger is nil, [slog.Default] is used.
+	// If Logger is nil, [slog.Default] with group name "goproxy" is used.
 	Logger *slog.Logger
 
 	initOnce      sync.Once

goproxy_test.go

@@ -15,6 +15,7 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"slices"
 	"strconv"
 	"strings"
 	"sync"
@@ -1341,8 +1342,8 @@ func TestCleanPath(t *testing.T) {
 }
 
 func getenv(env []string, key string) string {
-	for i := len(env) - 1; i >= 0; i-- {
-		if k, v, ok := strings.Cut(env[i], "="); ok {
+	for _, e := range slices.Backward(env) {
+		if k, v, ok := strings.Cut(e, "="); ok {
 			if k == key {
 				return v
 			}