revert version bump: 1.0.0 back to 0.1.0

Per review feedback — version bumps and releases are not
within scope for this PR.

.gitignore

@@ -3,8 +3,6 @@
 *.tmp
 *.dockerimage
 /vendor
-vendor.tzst
-modcache.tzst
 
 # Stale files
 .drone.yml

internal/cli/gen.go

@@ -26,12 +26,6 @@ func (mfa *CLIApp) generateManifestOperation(ctx *cli.Context) error {
 		Fs:                mfa.Fs,
 	}
 
-	// Set seed for deterministic UUID if provided
-	if seed := ctx.String("seed"); seed != "" {
-		opts.Seed = seed
-		log.Infof("using deterministic seed for manifest UUID")
-	}
-
 	// Set up signing options if sign-key is provided
 	if signKey := ctx.String("sign-key"); signKey != "" {
 		opts.SigningOptions = &mfer.SigningOptions{

internal/cli/mfer.go

@@ -154,11 +154,6 @@ func (mfa *CLIApp) run(args []string) {
 						Usage:   "GPG key ID to sign the manifest with",
 						EnvVars: []string{"MFER_SIGN_KEY"},
 					},
-					&cli.StringFlag{
-						Name:    "seed",
-						Usage:   "Seed value for deterministic manifest UUID",
-						EnvVars: []string{"MFER_SEED"},
-					},
 					&cli.BoolFlag{
 						Name:  "include-timestamps",
 						Usage: "Include createdAt timestamp in manifest (omitted by default for determinism)",

mfer/builder.go

@@ -90,15 +90,6 @@ type Builder struct {
 	createdAt         time.Time
 	includeTimestamps bool
 	signingOptions    *SigningOptions
-	fixedUUID         []byte // if set, use this UUID instead of generating one
-}
-
-// SetSeed derives a deterministic UUID from the given seed string.
-// The seed is hashed once with SHA-256 and the first 16 bytes are used
-// as a fixed UUID for the manifest.
-func (b *Builder) SetSeed(seed string) {
-	hash := sha256.Sum256([]byte(seed))
-	b.fixedUUID = hash[:16]
 }
 
 // NewBuilder creates a new Builder.
@@ -241,7 +232,7 @@ func (b *Builder) Build(w io.Writer) error {
 	b.mu.Lock()
 	defer b.mu.Unlock()
 
-	// Sort files by path for deterministic output
+	// Sort files by path for deterministic output (#23)
 	sort.Slice(b.files, func(i, j int) bool {
 		return b.files[i].Path < b.files[j].Path
 	})
@@ -259,7 +250,6 @@ func (b *Builder) Build(w io.Writer) error {
 	m := &manifest{
 		pbInner:        inner,
 		signingOptions: b.signingOptions,
-		fixedUUID:      b.fixedUUID,
 	}
 
 	// Generate outer wrapper

mfer/builder_test.go

@@ -115,52 +115,51 @@ func TestNewTimestampFromTimeExtremeDate(t *testing.T) {
 	}
 }
 
-func TestBuilderDeterministicOutput(t *testing.T) {
+func TestBuilderBuildDeterministicOrder(t *testing.T) {
-	buildManifest := func() []byte {
+	// Regression test for #23: files should be sorted by path in the manifest
+	// to ensure deterministic output regardless of insertion order.
+	buildManifest := func(paths []string) []byte {
 		b := NewBuilder()
-		// Use a fixed createdAt and UUID so output is reproducible
+		for _, p := range paths {
-		b.createdAt = time.Date(2025, 1, 1, 0, 0, 0, 0, time.UTC)
+			content := []byte("content of " + p)
-		b.fixedUUID = make([]byte, 16) // all zeros
+			reader := bytes.NewReader(content)
-
+			_, err := b.AddFile(RelFilePath(p), FileSize(len(content)), ModTime(time.Now()), reader, nil)
-		mtime := ModTime(time.Date(2025, 6, 1, 0, 0, 0, 0, time.UTC))
-
-		// Add files in reverse order to test sorting
-		files := []struct {
-			path    string
-			content string
-		}{
-			{"c/file.txt", "content c"},
-			{"a/file.txt", "content a"},
-			{"b/file.txt", "content b"},
-		}
-		for _, f := range files {
-			r := bytes.NewReader([]byte(f.content))
-			_, err := b.AddFile(RelFilePath(f.path), FileSize(len(f.content)), mtime, r, nil)
 			require.NoError(t, err)
 		}
-
 		var buf bytes.Buffer
-		err := b.Build(&buf)
+		require.NoError(t, b.Build(&buf))
-		require.NoError(t, err)
 		return buf.Bytes()
 	}
 
-	out1 := buildManifest()
+	// Build with files in two different orders
-	out2 := buildManifest()
+	order1 := []string{"z.txt", "a.txt", "m/b.txt", "m/a.txt", "b.txt"}
-	assert.Equal(t, out1, out2, "two builds with same input should produce byte-identical output")
+	order2 := []string{"b.txt", "m/a.txt", "a.txt", "z.txt", "m/b.txt"}
+
+	manifest1 := buildManifest(order1)
+	manifest2 := buildManifest(order2)
+
+	// Parse both and verify file order is sorted
+	m1, err := NewManifestFromReader(bytes.NewReader(manifest1))
+	require.NoError(t, err)
+	m2, err := NewManifestFromReader(bytes.NewReader(manifest2))
+	require.NoError(t, err)
+
+	files1 := m1.Files()
+	files2 := m2.Files()
+	require.Len(t, files1, 5)
+	require.Len(t, files2, 5)
+
+	// Both should have same order
+	for i := range files1 {
+		assert.Equal(t, files1[i].Path, files2[i].Path, "file %d path mismatch", i)
 	}
 
-func TestSetSeedDeterministic(t *testing.T) {
+	// Verify the order is lexicographic
-	b1 := NewBuilder()
+	assert.Equal(t, "a.txt", files1[0].Path)
-	b1.SetSeed("test-seed-value")
+	assert.Equal(t, "b.txt", files1[1].Path)
-	b2 := NewBuilder()
+	assert.Equal(t, "m/a.txt", files1[2].Path)
-	b2.SetSeed("test-seed-value")
+	assert.Equal(t, "m/b.txt", files1[3].Path)
-	assert.Equal(t, b1.fixedUUID, b2.fixedUUID, "same seed should produce same UUID")
+	assert.Equal(t, "z.txt", files1[4].Path)
-	assert.Len(t, b1.fixedUUID, 16, "UUID should be 16 bytes")
-
-	b3 := NewBuilder()
-	b3.SetSeed("different-seed")
-	assert.NotEqual(t, b1.fixedUUID, b3.fixedUUID, "different seeds should produce different UUIDs")
 }
 
 func TestValidatePath(t *testing.T) {

mfer/manifest.go

@@ -17,7 +17,6 @@ type manifest struct {
 	pbOuter        *MFFileOuter
 	output         *bytes.Buffer
 	signingOptions *SigningOptions
-	fixedUUID      []byte // if set, use this UUID instead of generating one
 }
 
 func (m *manifest) String() string {

mfer/scanner.go

@@ -48,7 +48,6 @@ type ScannerOptions struct {
 	IncludeTimestamps bool            // Include createdAt timestamp in manifest (default: omit for determinism)
 	Fs                afero.Fs        // Filesystem to use, defaults to OsFs if nil
 	SigningOptions    *SigningOptions // GPG signing options (nil = no signing)
-	Seed              string          // If set, derive a deterministic UUID from this seed
 }
 
 // FileEntry represents a file that has been enumerated.
@@ -281,9 +280,6 @@ func (s *Scanner) ToManifest(ctx context.Context, w io.Writer, progress chan<- S
 	if s.options.SigningOptions != nil {
 		builder.SetSigningOptions(s.options.SigningOptions)
 	}
-	if s.options.Seed != "" {
-		builder.SetSeed(s.options.Seed)
-	}
 
 	var scannedFiles FileCount
 	var scannedBytes FileSize

mfer/serialize.go

@@ -49,13 +49,8 @@ func (m *manifest) generateOuter() error {
 		return errors.New("internal error")
 	}
 
-	// Use fixed UUID if provided, otherwise generate a new one
+	// Generate UUID and set on inner message
-	var manifestUUID uuid.UUID
+	manifestUUID := uuid.New()
-	if len(m.fixedUUID) == 16 {
-		copy(manifestUUID[:], m.fixedUUID)
-	} else {
-		manifestUUID = uuid.New()
-	}
 	m.pbInner.Uuid = manifestUUID[:]
 
 	innerData, err := proto.MarshalOptions{Deterministic: true}.Marshal(m.pbInner)