internal/pkg: remove tar built-in decompressor

This is replaced by decompressArtifact and is no longer necessary.

Signed-off-by: Ophestra <cat@gensokyo.uk>

internal/rosa/state.go

@@ -433,10 +433,11 @@ func (s *S) getFrame() azalea.Frame {
 		identDefault := k("default")
 		identArch := unique.Make(azalea.Ident(s.arch))
 
+		const compressOffset = 1 << 8
 		enumCompress := map[unique.Handle[azalea.Ident]]any{
-			k("uncompressed"): uint32(pkg.TarUncompressed),
-			k("gzip"):         uint32(pkg.TarGzip),
-			k("bzip2"):        uint32(pkg.TarBzip2),
+			k("uncompressed"): 0,
+			k("gzip"):         pkg.Gzip + compressOffset,
+			k("bzip2"):        pkg.Bzip2 + compressOffset,
 		}
 
 		s.frame.Val = map[unique.Handle[azalea.Ident]]any{
@@ -609,15 +610,19 @@ func (s *S) getFrame() azalea.Frame {
 				args azalea.FArgs,
 			) (v any, set bool, err error) {
 				var url, checksum string
-				var compress uint32
+				var _compress int
 				if err = args.Apply(map[unique.Handle[azalea.Ident]]any{
 					k("url"):      &url,
 					k("checksum"): &checksum,
-					k("compress"): &compress,
+					k("compress"): &_compress,
 				}); err != nil {
 					return
 				}
-				v = pkg.NewHTTPGetTar(nil, url, mustDecode(checksum), compress)
+				f := pkg.NewHTTPGet(nil, url, mustDecode(checksum))
+				if _compress != 0 {
+					f = pkg.NewDecompress(f, uint32(_compress-compressOffset))
+				}
+				v = pkg.NewTar(f)
 				set = true
 				return
 			}, V: enumCompress},
@@ -744,7 +749,10 @@ func (s *S) getFrame() azalea.Frame {
 				v = newFromGitHubRelease(suffix, tag, name, checksum, compress)
 				set = true
 				return
-			}, V: enumCompress},
+			}, V: map[unique.Handle[azalea.Ident]]any{
+				k("gzip"):  uint32(pkg.Gzip),
+				k("bzip2"): uint32(pkg.Bzip2),
+			}},
 
 			// high-level helpers
 
@@ -1275,7 +1283,7 @@ func (s *S) SetSource(fsys fs.FS) error {
 				Description: "hakurei source tree (current)",
 				Version:     "1.0.0-CURRENT",
 				Exclude:     true,
-			}, pkg.NewTar(a, pkg.TarGzip)
+			}, pkg.NewTar(pkg.NewDecompress(a, pkg.Gzip))
 		}),
 	)
 	s.DropCaches(s.Arch(), s.Flags())