Corrected the name of the version field when reading ..latest.

ignore.go

@@ -9,16 +9,19 @@ import (
 )
 
 type latestPayload struct {
-    Latest string `json:"latest"`
+    Version string `json:"version"`
 }
 
 func readLatestFile(lat_path string) (latestPayload, error) {
     output := latestPayload{}
-
-    handle, err := os.Open(lat_path)
     if _, err := os.Stat(lat_path); errors.Is(err, os.ErrNotExist) {
         return output, nil
     }
+
+    handle, err := os.Open(lat_path)
+    if err != nil {
+        return output, fmt.Errorf("failed to open %q; %w", lat_path, err)
+    }
     defer handle.Close()
 
     dec := json.NewDecoder(handle)
@@ -55,7 +58,7 @@ func ignoreNonLatest(registry, project, asset string) (bool, error) {
         ipath := filepath.Join(asset_dir, v, ".SewerRatignore")
         _, err := os.Stat(ipath)
 
-        if v == payload.Latest {
+        if v == payload.Version {
             if !errors.Is(err, os.ErrNotExist) {
                 changed = true
                 err := os.Remove(ipath)

ignore_test.go

@@ -18,11 +18,11 @@ func TestReadLatestFile(t *testing.T) {
     if err != nil {
         t.Fatalf("failed to read the ..latest file; %v", err)
     }
-    if latest.Latest != "" {
+    if latest.Version != "" {
         t.Fatalf("..latest file should be absent; %v", err)
     }
 
-    err = os.WriteFile(lat_path, []byte("{ \"latest\": \"foobar\" }"), 0644)
+    err = os.WriteFile(lat_path, []byte("{ \"version\": \"foobar\" }"), 0644)
     if err != nil {
         t.Fatalf("failed to write to the ..latest file; %v", err)
     }
@@ -31,7 +31,7 @@ func TestReadLatestFile(t *testing.T) {
     if err != nil {
         t.Fatalf("failed to read the ..latest file; %v", err)
     }
-    if latest.Latest != "foobar" {
+    if latest.Version != "foobar" {
         t.Fatalf("unexpected latest version %q", latest)
     }
 }
@@ -57,7 +57,7 @@ func TestIgnoreNonLatest(t *testing.T) {
     }
 
     lat_path := filepath.Join(asset_dir, "..latest")
-    err = os.WriteFile(lat_path, []byte("{ \"latest\": \"3\" }"), 0644)
+    err = os.WriteFile(lat_path, []byte("{ \"version\": \"3\" }"), 0644)
     if err != nil {
         t.Fatalf("failed to write to the ..latest file; %v", err)
     }
@@ -99,7 +99,7 @@ func TestIgnoreNonLatest(t *testing.T) {
         }
     })
 
-    err = os.WriteFile(lat_path, []byte("{ \"latest\": \"1\" }"), 0644)
+    err = os.WriteFile(lat_path, []byte("{ \"version\": \"1\" }"), 0644)
     if err != nil {
         t.Fatalf("failed to update the ..latest file; %v", err)
     }