Use HOME for Barnard config path

config/user_config.go

@@ -7,7 +7,6 @@ import (
 	"github.com/pelletier/go-toml/v2"
 	"io/ioutil"
 	"os"
-	"os/user"
 	"strconv"
 	"strings"
 )
@@ -398,15 +397,14 @@ func fileExists(path string) bool {
 
 func resolvePath(path string) string {
 	if strings.HasPrefix(path, "~/") || strings.Contains(path, "$HOME") {
-		usr, err := user.Current()
+		homeDir, err := os.UserHomeDir()
 		if err != nil {
 			panic(err)
 		}
-		var hd = usr.HomeDir
 		if strings.Contains(path, "$HOME") {
-			path = strings.Replace(path, "$HOME", hd, 1)
+			path = strings.Replace(path, "$HOME", homeDir, 1)
 		} else {
-			path = strings.Replace(path, "~", hd, 1)
+			path = strings.Replace(path, "~", homeDir, 1)
 		}
 	}
 	return path

config/user_config_test.go

@@ -36,3 +36,16 @@ func TestConfigBackfillsRecordingDefaults(t *testing.T) {
 		t.Fatalf("expected admin menu f11, got %s", got)
 	}
 }
+
+func TestConfigUsesHomeEnvironmentForDefaultPath(t *testing.T) {
+	dir := t.TempDir()
+	t.Setenv("HOME", dir)
+	configPath := "~/.barnard.toml"
+
+	cfg := NewConfig(&configPath)
+	cfg.SaveConfig()
+
+	if _, err := os.Stat(filepath.Join(dir, ".barnard.toml")); err != nil {
+		t.Fatalf("expected config to be written under HOME: %v", err)
+	}
+}