Fix more golangci-lint warnings and update its config, bump required version of go compiler to 1.24.2

.golangci.yml

@@ -1,28 +1,12 @@
+version: "2"
 run:
-  tests: false
-  skip-dirs:
-    - data
-    - vendor
+  go: "1.24"
   modules-download-mode: readonly
+  tests: false
   allow-parallel-runners: true
-  go: '1.21'
-output:
-  sort-results: true
-linters-settings:
-  gosec:
-    excludes:
-      # not relevant here
-      - G404 # Insecure random number source (rand)
-      - G306 # Expect WriteFile permissions to be 0600 or less (gosec)
 linters:
-  disable-all: true
+  default: none
   enable:
-    - errcheck
-    - gosimple
-    - govet
-    - ineffassign
-    - staticcheck
-    - unused
     - asasalint
     - asciicheck
     - bodyclose
@@ -30,20 +14,20 @@ linters:
     - contextcheck
     - decorder
     - durationcheck
+    - err113
+    - errcheck
     - errchkjson
     - errorlint
-    - exportloopref
     - ginkgolinter
     - gocheckcompilerdirectives
     - gocritic
     - godot
-    - goerr113
-    - gofmt
-    - goimports
     - gosec
     - gosmopolitan
+    - govet
     - grouper
     - importas
+    - ineffassign
     - ireturn
     - makezero
     - mirror
@@ -59,8 +43,39 @@ linters:
     - reassign
     - revive
     - rowserrcheck
-    - stylecheck
+    - staticcheck
     - unconvert
+    - unused
     - wastedassign
     - whitespace
     - wsl
+  settings:
+    gosec:
+      excludes:
+        - G404
+        - G306
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - data
+      - vendor
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gofmt
+    - goimports
+  exclusions:
+    generated: lax
+    paths:
+      - data
+      - vendor
+      - third_party$
+      - builtin$
+      - examples$

Makefile

@@ -1,6 +1,6 @@
 #!/usr/bin/env gmake -f
 
-BUILDOPTS=-ldflags="-s -w" -a -gcflags=all=-l -trimpath
+BUILDOPTS=-ldflags="-s -w" -a -gcflags=all=-l -trimpath -buildvcs=false
 
 BINARY=i3status-go
 TEST1=battery-test

cmd/battery-test/main.go

@@ -14,7 +14,7 @@ func main() {
 		batteries, _ := battery.GetAll()
 
 		for index, battery := range batteries {
-			fmt.Printf("Battery %s: %s\n", index, spew.Sdump(battery))
+			fmt.Printf("Battery %d: %s\n", index, spew.Sdump(battery))
 		}
 
 		time.Sleep(1 * time.Second)

go.mod

@@ -1,6 +1,6 @@
 module i3status-go
 
-go 1.22.6
+go 1.24.2
 
 require (
 	github.com/adrg/xdg v0.5.0

internal/lib/batteries.go

@@ -11,11 +11,11 @@ import (
 // UpdateBatteryInfo updates info about battery charge.
 func (c *MyConfig) UpdateBatteryInfo() {
 	var (
-		ch     int
-		status string
-		Batts  string
-		InitialDelay time.Duration = 100 * time.Millisecond
-		LoopIterationDelay time.Duration = 5 * time.Second
+		ch                 int
+		status             string
+		Batts              string
+		InitialDelay       = 100 * time.Millisecond
+		LoopIterationDelay = 5 * time.Second
 	)
 
 	Delay := InitialDelay
@@ -30,7 +30,7 @@ func (c *MyConfig) UpdateBatteryInfo() {
 		batteries, _ := battery.GetAll()
 		// In theory, this module should give for each entry its separate err, but in practice it gives
 		// one single err for all entries, so we cannot detemine whist exatly entry errored.
- 
+
 		var (
 			battsInfo string
 			chStr     string

internal/lib/config.go

@@ -252,7 +252,7 @@ type MyConfig struct {
 
 // readConf reads and validates config if config does not exist, it puts default config to the same dir where i3 config
 // is located.
-func ReadConf(DefaultConfig []byte) (*MyConfig, error) {
+func ReadConf(defaultConfig []byte) (*MyConfig, error) {
 	var (
 		path   string
 		config *MyConfig
@@ -272,7 +272,7 @@ func ReadConf(DefaultConfig []byte) (*MyConfig, error) {
 	// about it for now.
 	if err != nil {
 		if errors.Is(err, os.ErrNotExist) {
-			buf = DefaultConfig
+			buf = defaultConfig
 
 			if err := os.WriteFile(path, buf, 0644); err != nil {
 				return config, err
@@ -283,7 +283,7 @@ func ReadConf(DefaultConfig []byte) (*MyConfig, error) {
 	} else {
 		// Config file looks too long for config...
 		if fileInfo.Size() > 65535 {
-			err := fmt.Errorf("config file %s is too long for config", path) //nolint: goerr113
+			err := fmt.Errorf("config file %s is too long for config", path) //nolint: err113
 
 			return config, err
 		}
@@ -1530,13 +1530,11 @@ func ReadConf(DefaultConfig []byte) (*MyConfig, error) {
 		for num, app := range sampleConfig.Apps {
 			// app.Instance can be missing.
 			// app.Class can be missing.
-
 			if app.Name == "" {
 				app.Name = fmt.Sprintf("app%d", num)
 			}
 
 			// app.Args can be empty slice. In that case command will be run without aruments.
-
 			if app.Cmd == "" {
 				app.Cmd = "true"
 			}
@@ -1557,12 +1555,11 @@ func ReadConf(DefaultConfig []byte) (*MyConfig, error) {
 				app.BorderActive = sampleConfig.Color
 			}
 
+			// app.Separator can be omitted, in that case it is false
+			// app.SeparatorBlockWidth can be missing
 			if app.FullText == "" {
 				app.FullText = fmt.Sprintf(" %d ", num)
 			}
-
-			// app.Separator can be omitted, in that case it is false
-			// app.SeparatorBlockWidth can be missing
 		}
 	}
 

internal/lib/i3.go

@@ -152,10 +152,10 @@ func HasWindows(className string, instanceName string) bool {
 func FindWindowInstance(regexpStr string) bool {
 	var found = false
 
-	f := func(key interface{}, value interface{}) bool {
+	f := func(key any, value any) bool { //nolint: revive
 		keyStr := reflect.ValueOf(key).String()
 
-		re, err := regexp.Compile(regexpStr) //nolint:nolintlint, gocritic, we do not want shit our pants and panic on
+		re, err := regexp.Compile(regexpStr) // we do not want shit our pants and panic on
 		//        erroneous regexp, we want log it to stderr, that it.
 
 		if err != nil {
@@ -183,10 +183,10 @@ func FindWindowInstance(regexpStr string) bool {
 func FindWindowClass(regexpStr string) bool {
 	var found = false
 
-	f := func(key interface{}, value interface{}) bool {
+	f := func(key any, value any) bool { //nolint: revive
 		keyStr := reflect.ValueOf(key).String()
 
-		re, err := regexp.Compile(regexpStr) //nolint:nolintlint, gocritic, we do not want shit our pants and panic on
+		re, err := regexp.Compile(regexpStr) // we do not want shit our pants and panic on
 		//        erroneous regexp, we want log it to stderr, that it.
 
 		if err != nil {

internal/lib/pulseaudio.go

@@ -135,7 +135,7 @@ func (c *MyConfig) PaReinit() error {
 			}
 
 			if cnt >= 5 {
-				return errors.New("timeout waiting pulseaudio to exit") //nolint: goerr113
+				return errors.New("timeout waiting pulseaudio to exit") //nolint: err113
 			}
 
 			log.Print("Waiting for pulseaudio to exit")

internal/lib/vpn.go

@@ -69,6 +69,7 @@ func (c *MyConfig) VPNTCPCheck() bool {
 
 	if err == nil {
 		_ = conn.Close()
+
 		return true
 	}