parse out the required golang version

cleanGoSum.go

@@ -20,6 +20,9 @@ func cleanGoDepsCheckOk(check *gitpb.Repo) error {
 	var err error = nil
 	var fixes [][]string
 	log.Printf("current repo %s go dependancy count: %d", check.GetGoPath(), check.GoDepsLen())
+	if check.GoDeps == nil {
+		return errors.New("check.GoDeps == nil")
+	}
 	all := check.GoDeps.SortByGoPath()
 	for all.Scan() {
 		depRepo := all.Next()

main.go

@@ -16,6 +16,8 @@ import (
 var VERSION string
 var BUILDTIME string
 
+var golangVersion string = "1.21"
+
 var pp *arg.Parser
 var forge *forgepb.Forge
 

redoGoMod.go

@@ -5,7 +5,9 @@ package main
 import (
 	"errors"
 	"os"
+	"strings"
 
+	"github.com/go-cmd/cmd"
 	"go.wit.com/lib/protobuf/gitpb"
 	"go.wit.com/log"
 )
@@ -21,7 +23,6 @@ func eraseGoMod(repo *gitpb.Repo) {
 
 // sets the required golang version in go.mod
 func setGoVersion(repo *gitpb.Repo, version string) error {
-	// most things should build with golang after 1.21
 	if err := repo.StrictRun([]string{"go", "mod", "edit", "-go=" + version}); err != nil {
 		log.Warn(repo.GetGoPath(), "go mod edit failed", err)
 		return err
@@ -29,6 +30,14 @@ func setGoVersion(repo *gitpb.Repo, version string) error {
 	return nil
 }
 
+func goTidy(fullpath string) (cmd.Status, error) {
+	if result, err := runVerbose(fullpath, []string{"go", "mod", "tidy", "-go=" + golangVersion}); err == nil {
+		return result, nil
+	} else {
+		return result, err
+	}
+}
+
 // wrapper around 'go mod init' and 'go mod tidy'
 func redoGoMod(repo *gitpb.Repo) error {
 	// unset the go development ENV var to generate release files
@@ -41,13 +50,16 @@ func redoGoMod(repo *gitpb.Repo) error {
 		log.Warn("go mod init failed", err)
 		return err
 	}
-	if err := runVerbose(repo.FullPath, []string{"go", "mod", "tidy", "-go=1.21"}); err != nil {
-		log.Warn("go mod tidy failed", err)
-		return err
+	if result, err := goTidy(repo.FullPath); err != nil {
+		if tinyFixer(result) {
+			if _, err := goTidy(repo.FullPath); err != nil {
+				return err
+			}
+		}
 	}
 
 	// most things should build with golang after 1.21 // todo: allow this to be set somewhere
-	if err := setGoVersion(repo, "1.21"); err != nil {
+	if err := setGoVersion(repo, golangVersion); err != nil {
 		log.Warn(repo.GetGoPath(), "go mod edit failed", err)
 		return err
 	}
@@ -87,3 +99,19 @@ func redoGoMod(repo *gitpb.Repo) error {
 	_, err := repo.ParseGoSum()
 	return err
 }
+
+func tinyFixer(result cmd.Status) bool {
+	for _, line := range result.Stdout {
+		if strings.Contains(line, "requires go@") {
+			log.Info("tinyFixer:", line)
+			parts := strings.Split(line, "requires go@")
+			if len(parts) == 2 {
+				parts = strings.Split(parts[1], ",")
+				golangVersion = parts[0]
+				return true
+			}
+			log.Info("tinyFixer:", line, "golangVersion", golangVersion)
+		}
+	}
+	return false
+}

run.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/go-cmd/cmd"
 	"go.wit.com/lib/gui/shell"
 	"go.wit.com/log"
 )
@@ -69,40 +70,42 @@ func runStrict(wd string, cmd []string) {
 	}
 }
 
-func runVerbose(wd string, cmd []string) error {
+func runVerbose(wd string, argv []string) (cmd.Status, error) {
 	var err error
 	log.DaemonMode(true)
 	defer log.DaemonMode(false)
 	if wd != "" {
 		if err = os.Chdir(wd); err != nil {
-			return fmt.Errorf("cd %s failed %v", wd, err)
+			var s cmd.Status
+			s.Stdout = []string{"notreal stdout from runVerbose()"}
+			return s, fmt.Errorf("cd %s failed %v", wd, err)
 		}
 	}
-	log.Info(wd, "running:", wd, cmd)
+	log.Info(wd, "running:", wd, argv)
 	// result := shell.Run(cmd)
-	result := shell.Run(cmd)
+	result := shell.Run(argv)
 	if result.Error != nil {
-		log.Info("cmd failed", wd, cmd, err)
+		log.Info("cmd failed", wd, argv, err)
 		for _, line := range result.Stdout {
 			log.Info(line)
 		}
 		for i, line := range result.Stderr {
 			log.Info("STDERR:", i, line)
 		}
-		return result.Error
+		return result, result.Error
 	}
 	if result.Exit != 0 {
-		log.Info("cmd failed", wd, cmd, err)
+		log.Info("cmd failed", wd, argv, err)
 		for _, line := range result.Stdout {
 			log.Info(line)
 		}
 		for i, line := range result.Stderr {
 			log.Info("STDERR:", i, line)
 		}
-		return fmt.Errorf("cmd failed with %d", result.Exit)
+		return result, fmt.Errorf("cmd failed with %d", result.Exit)
 	}
 	for _, line := range result.Stdout {
 		log.Info(line)
 	}
-	return nil
+	return result, nil
 }