feat: complete classification of all 116 packages (169,867 rows)

- Add asset_filter/asset_exclude conf keys for shared-repo packages
- Split hugo/hugo-extended: exclude/require "extended" in asset name
- Add macosx, ia32, .snap, .appx classifier patterns
- Fix zig Platform.Size JSON string type (was int64, upstream sends string)
- Filter install scripts, cosign keys, compat.json as meta-assets
- Add riscv64, loong64, armv5, mipsle, mips64le to buildmeta

Full classification produces 169,867 distributable rows across 116 packages.

CAT-RULES.md

@@ -79,10 +79,52 @@ Early Flutter releases (pre-2020) had no arch-specific builds — single
 platform SDK. No arch in filename → empty arch in CSV. This is correct;
 the installer would default to x86_64 on supported platforms.
 
-### TODO for Next Batches
+## Batch 3 (25 packages: arc through gitdeploy)
+
+### New Classifier Patterns
+
+- `macosx` → darwin (syncthing uses `macosx`)
+- `ia32` → x86 (dart-sass uses `ia32`)
+- `.snap` format → Linux-only
+- `.appx` format added for PowerShell
+
+### New Meta-Asset Filters
+
+- `.pub` (cosign keys)
+- `install.sh`, `install.ps1` (install scripts)
+- `compat.json` (syncthing metadata)
+
+## Batch 4 (62 remaining packages) + Full Run
+
+### Hugo/Hugo-Extended Split
+
+hugo-extended shares the same GitHub repo as hugo. Added `asset_filter` and
+`asset_exclude` conf keys to split them:
+- `hugo/releases.conf`: `asset_exclude = extended` (6,354 assets)
+- `hugo-extended/releases.conf`: `asset_filter = extended` (2,193 assets)
+
+User direction: "hugo-extended should be a separate release. I believe the
+README covered this. I think it should have been the default."
+
+### Remaining Empty-Field Patterns (Per-Installer Territory)
+
+These have empty OS or arch from the generic classifier and need per-installer
+config to resolve:
+- Git-for-Windows: `Git-2.x.x-32-bit.tar.bz2` — no OS in filename, always Windows
+- CMake: HP-UX, IRIX targets — exotic/dead platforms
+- Dashcore: old naming conventions
+- Old PowerShell `.msi` files — no arch in filename
+- Bare binaries (ollama-darwin, caddy2_beta12_macos) — no arch info
+
+### Full Results
+
+169,867 distributable rows across 116 packages.
+3 packages produce 0 rows: serviceman, aliasman (source-only), duckdns.sh.
+
+### TODO
 
-- Hugo "extended" variant should be captured in `extra` column
 - Consider whether bare binaries (no format extension) should get a format marker
-- Track `_extended` suffix detection more broadly
+- Per-installer configs for packages with known-but-undetectable OS/arch
+- `arm32` classification: leave to per-installer unless pattern emerges
 - `arm32` is vague — may mean armv6 or armv7. Leave as per-installer responsibility
   unless a distinct pattern emerges (user direction 2026-03-10)

cmd/classify/main.go

@@ -237,6 +237,8 @@ type ghAsset struct {
 
 func classifyGitHub(pkg string, conf *installerconf.Conf, d *rawcache.Dir) ([]Dist, error) {
 	tagPrefix := conf.Get("tag_prefix")
+	assetFilter := strings.ToLower(conf.Get("asset_filter"))   // asset must contain this
+	assetExclude := strings.ToLower(conf.Get("asset_exclude")) // asset must NOT contain this
 	releases, err := readAllReleases(d)
 	if err != nil {
 		return nil, err
@@ -269,12 +271,21 @@ func classifyGitHub(pkg string, conf *installerconf.Conf, d *rawcache.Dir) ([]Di
 
 		for _, asset := range rel.Assets {
 			name := asset.Name
+			lower := strings.ToLower(name)
 
 			// Skip checksums, signatures, SBOMs, etc.
 			if isMetaAsset(name) {
 				continue
 			}
 
+			// Per-package asset filters.
+			if assetFilter != "" && !strings.Contains(lower, assetFilter) {
+				continue
+			}
+			if assetExclude != "" && strings.Contains(lower, assetExclude) {
+				continue
+			}
+
 			os_, arch, libc, format := classifyFilename(name)
 
 			dists = append(dists, Dist{
@@ -1206,8 +1217,9 @@ func isMetaAsset(name string) bool {
 		"checksums.txt", "sha256sums", "sha512sums",
 		".sbom", ".spdx", ".json.sig", ".sigstore",
 		"_src.tar.gz", "_src.tar.xz", "_src.zip",
-		".d.ts", // TypeScript definitions
-		".tgz",  // npm packages (not binary distributables)
+		".d.ts",  // TypeScript definitions
+		".tgz",   // npm packages (not binary distributables)
+		".pub",   // cosign/SSH public keys
 	} {
 		if strings.HasSuffix(lower, suffix) {
 			return true
@@ -1221,6 +1233,14 @@ func isMetaAsset(name string) bool {
 			return true
 		}
 	}
+	// Exact name matches for known non-distributable files.
+	for _, exact := range []string{
+		"install.sh", "install.ps1", "compat.json",
+	} {
+		if lower == exact {
+			return true
+		}
+	}
 	return false
 }
 

hugo-extended/releases.conf

@@ -1,3 +1,4 @@
 source = github
 owner = gohugoio
 repo = hugo
+asset_filter = extended

hugo/releases.conf

@@ -1,3 +1,4 @@
 source = github
 owner = gohugoio
 repo = hugo
+asset_exclude = extended

internal/buildmeta/buildmeta.go

@@ -88,6 +88,8 @@ const (
 	Format7z     Format = ".7z"
 	FormatDeb    Format = ".deb"
 	FormatRPM    Format = ".rpm"
+	FormatSnap   Format = ".snap"
+	FormatAppx   Format = ".appx"
 	FormatSh     Format = ".sh"
 	FormatGit    Format = ".git"
 )

internal/classify/classify.go

@@ -50,8 +50,8 @@ func Filename(name string) Result {
 
 	format := detectFormat(lower)
 
-	// .deb and .rpm are Linux-only package formats.
-	if os == "" && (format == buildmeta.FormatDeb || format == buildmeta.FormatRPM) {
+	// .deb, .rpm, .snap are Linux-only package formats.
+	if os == "" && (format == buildmeta.FormatDeb || format == buildmeta.FormatRPM || format == buildmeta.FormatSnap) {
 		os = buildmeta.OSLinux
 	}
 	// .app.zip and .dmg are macOS-only formats.
@@ -78,7 +78,7 @@ var osPatterns = []struct {
 	os      buildmeta.OS
 	pattern *regexp.Regexp
 }{
-	{buildmeta.OSDarwin, regexp.MustCompile(`(?i)(?:` + b + `(?:darwin|macos|osx|os-x|apple)` + bEnd + `|` + b + `mac` + bEnd + `)`)},
+	{buildmeta.OSDarwin, regexp.MustCompile(`(?i)(?:` + b + `(?:darwin|macos|macosx|osx|os-x|apple)` + bEnd + `|` + b + `mac` + bEnd + `)`)},
 	{buildmeta.OSLinux, regexp.MustCompile(`(?i)` + b + `linux` + bEnd)},
 	{buildmeta.OSWindows, regexp.MustCompile(`(?i)` + b + `(?:windows|win(?:32|64|dows)?)` + bEnd + `|\.exe(?:\.xz)?$|\.msi$`)},
 	{buildmeta.OSFreeBSD, regexp.MustCompile(`(?i)` + b + `freebsd` + bEnd)},
@@ -131,7 +131,7 @@ var archPatterns = []struct {
 	{buildmeta.ArchMIPSLE, regexp.MustCompile(`(?i)mips(?:el|le)`)},
 	{buildmeta.ArchMIPS, regexp.MustCompile(`(?i)` + b + `mips` + bEnd)},
 	// x86 last — must not steal x86_64.
-	{buildmeta.ArchX86, regexp.MustCompile(`(?i)(?:` + b + `x86` + bEnd + `|i[3-6]86|` + b + `386` + bEnd + `|32-?bit)`)},
+	{buildmeta.ArchX86, regexp.MustCompile(`(?i)(?:` + b + `x86` + bEnd + `|i[3-6]86|ia32|` + b + `386` + bEnd + `|32-?bit)`)},
 }
 
 func detectArch(lower string) buildmeta.Arch {
@@ -189,6 +189,8 @@ var formatSuffixes = []struct {
 	{".dmg", buildmeta.FormatDMG},
 	{".deb", buildmeta.FormatDeb},
 	{".rpm", buildmeta.FormatRPM},
+	{".snap", buildmeta.FormatSnap},
+	{".appx", buildmeta.FormatAppx},
 	{".pkg", buildmeta.FormatPkg},
 }