feat: binary classifier for pypy (#2474)

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>

syft/pkg/cataloger/binary/cataloger_test.go

@@ -513,6 +513,16 @@ func Test_Cataloger_PositiveCases(t *testing.T) {
 				},
 			},
 		},
+		{
+			logicalFixture: "pypy-shared-lib/7.3.14/linux-amd64",
+			expected: pkg.Package{
+				Name:      "pypy",
+				Version:   "7.3.14",
+				PURL:      "pkg:generic/pypy@7.3.14",
+				Locations: locations("libpypy3.9-c.so"),
+				Metadata:  metadata("pypy-binary-lib"),
+			},
+		},
 		{
 			logicalFixture: "go/1.21.3/linux-amd64",
 			expected: pkg.Package{

syft/pkg/cataloger/binary/default_classifiers.go

@@ -38,6 +38,14 @@ func DefaultClassifiers() []Classifier {
 				cpe.Must("cpe:2.3:a:python:python:*:*:*:*:*:*:*:*"),
 			},
 		},
+		{
+			Class:    "pypy-binary-lib",
+			FileGlob: "**/libpypy*.so*",
+			EvidenceMatcher: FileContentsVersionMatcher(
+				`(?m)\[PyPy (?P<version>[0-9]+\.[0-9]+\.[0-9]+)`),
+			Package: "pypy",
+			PURL:    mustPURL("pkg:generic/pypy@version"),
+		},
 		{
 			Class:    "go-binary",
 			FileGlob: "**/go",

syft/pkg/cataloger/binary/test-fixtures/config.yaml

@@ -232,6 +232,14 @@ from-images:
     paths:
       - /usr/local/lib/libpython3.7m.so.1.0
 
+  - name: pypy-shared-lib
+    version: 7.3.14
+    images:
+      - ref: pypy:3.9-7.3.14-slim-bullseye@sha256:058f1a0c073534e535aed3d45c1982648378167901a05a0f35056006bf2e13bc
+        platform: linux/amd64
+    paths:
+      - /opt/pypy/bin/libpypy3.9-c.so
+
   - version: 2.8.23
     images:
       - ref: redis:2.8.23@sha256:e507029ca6a11b85f8628ff16d7ff73ae54582f16fd757e64431f5ca6d27a13c