fix #131; apply fix from FHPythonUtils/AttestationCheck#1

Author: FredHappyface

licensecheck/io/cli.py

@@ -121,7 +121,11 @@ def cli() -> None:  # pragma: no cover
 		if stdin.isatty():
 			args["requirements_paths"] = ["pyproject.toml"]
 		else:
-			stdin_path.write_text("\n".join(stdin.readlines()), encoding="utf-8")
+			lines = stdin.readlines()
+			if lines:
+				stdin_path.write_text("\n".join(lines), encoding="utf-8")
+			else:
+				args["requirements_paths"] = ["pyproject.toml"]
 
 	config: ConfigNode = Config()
 

licensecheck/io/fmt.py

@@ -302,7 +302,7 @@ def rawCsv(
 
 
 def fmt(
-	format_: str,
+	format_: FMT,
 	myLice: License,
 	packages: list[PackageInfo],
 	hide_parameters: set[str] | None = None,

licensecheck/packageinforesolver.py

@@ -78,12 +78,14 @@ def _get_package_info(self, package: Requirement) -> PackageInfo:
 		:param Requirement package: package info to unpack
 		:return PackageInfo: Information about the package.
 		"""
-		versions = {None}
-		try:
-			requirement_specs = package.specifier._specs
-			versions = {x._spec[1] for x in requirement_specs}
-		except AttributeError:
-			pass
+		versions: set[str | None] = {None}
+		package.name = canonicalize_name(package.name)
+
+		specifier = getattr(package, "specifier", None)
+		if specifier is not None:
+			parsed_versions = {item.version for item in specifier}
+			if parsed_versions:
+				versions = parsed_versions
 
 		package.name = canonicalize_name(package.name)
 

pyproject.toml

@@ -1,6 +1,6 @@
 [project]
 name = "licensecheck"
-version = "2026.0.6"
+version = "2026.0.7"
 description = "Output the licenses used by dependencies and check if these are compatible with the project license"
 authors = [{ name = "FredHappyface" }]
 requires-python = ">=3.12"

tests/test_packageinfo.py

@@ -3,6 +3,7 @@
 from pathlib import Path
 
 import pytest
+from packaging.requirements import Requirement
 
 from licensecheck.models.constants import UNKNOWN
 from licensecheck.models.packageinfo import PackageInfo
@@ -117,3 +118,13 @@ def test_getModuleSize() -> None:
 )
 def test_normalize_license(lice: str, normalized: str) -> None:
 	assert normalize_license(lice) == normalized
+
+
+def test_unpinned_requirement_does_not_crash(package_info_manager: PackageInfoManager) -> None:
+	package_info_manager.reqs = {Requirement("sample")}
+
+	packages = package_info_manager.getPackages()
+	package: PackageInfo = packages.pop()
+
+	assert package.name == "sample"
+	assert package.errorCode == 0