Prepare for release v0.9.4

Signed-off-by: Tushar Goel <tushar.goel.dav@gmail.com>

Author: TG1999

CHANGELOG.rst

@@ -7,6 +7,13 @@ next-version
 - Create PyPI cache location in the home directory if a cache directory cannot be made at the project root.
 
 
+v0.9.4
+------
+
+- Replace packaging with packvers.
+- Prevent duplicated package versions.
+
+
 v0.9.3
 ------
 

src/python_inspector/dependencies.py

@@ -50,6 +50,11 @@ def get_extra_data_from_requirements(requirements_file="requirements.txt"):
         yield package_data.extra_data
 
 
+def is_requirement_pinned(requirement: Requirement):
+    specifiers = requirement.specifier
+    return specifiers and len(specifiers) == 1 and next(iter(specifiers)).operator in {"==", "==="}
+
+
 def get_dependency(specifier):
     """
     Return a DependentPackage given a requirement ``specifier`` string.
@@ -63,26 +68,22 @@ def get_dependency(specifier):
 
     requirement = Requirement(requirement_string=specifier)
 
-    # TODO: use new InstallRequirement.from_specifier constructor when available
-    ir = InstallRequirement(
-        req=requirement,
-        requirement_line=specifier,
-    )
-
     scope = "install"
     is_runtime = True
     is_optional = False
 
-    if ir.name:
+    if requirement.name:
         # will be None if not pinned
-        version = ir.get_pinned_version
-        purl = PackageURL(type="pypi", name=ir.name, version=version).to_string()
+        version = None
+        if is_requirement_pinned(requirement):
+            version = str(list(requirement.specifier)[0].version)
+        purl = PackageURL(type="pypi", name=requirement.name, version=version).to_string()
 
     return models.DependentPackage(
         purl=purl,
         scope=scope,
         is_runtime=is_runtime,
         is_optional=is_optional,
-        is_resolved=ir.is_pinned or False,
+        is_resolved=False or is_requirement_pinned(requirement),
         extracted_requirement=specifier,
     )

src/python_inspector/resolve_cli.py

@@ -20,7 +20,7 @@
 
 TRACE = False
 
-__version__ = "0.9.3"
+__version__ = "0.9.4"
 
 DEFAULT_PYTHON_VERSION = "38"
 PYPI_SIMPLE_URL = "https://pypi.org/simple"

tests/data/azure-devops.req-310-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--requirement /home/jono/nexb/src/python-inspector/tests/data/azure-devops.req.txt",
       "--index-url https://pypi.org/simple",

tests/data/azure-devops.req-38-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--requirement /home/jono/nexb/src/python-inspector/tests/data/azure-devops.req.txt",
       "--index-url https://pypi.org/simple",

tests/data/default-url-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--specifier zipp==3.8.0",
       "--index-url https://pypi.org/simple",

tests/data/environment-marker-test-requirements.txt-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--requirement /home/tg1999/Desktop/python-inspector-1/tests/data/environment-marker-test-requirements.txt",
       "--index-url https://pypi.org/simple",

tests/data/frozen-requirements.txt-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--requirement /home/tg1999/Desktop/python-inspector-1/tests/data/frozen-requirements.txt",
       "--index-url https://pypi.org/simple",

tests/data/insecure-setup-2/setup.py-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--index-url https://pypi.org/simple",
       "--python-version 27",

tests/data/insecure-setup/setup.py-expected.json

@@ -2,7 +2,7 @@
   "headers": {
     "tool_name": "python-inspector",
     "tool_homepageurl": "https://github.com/nexB/python-inspector",
-    "tool_version": "0.9.3",
+    "tool_version": "0.9.4",
     "options": [
       "--index-url https://pypi.org/simple",
       "--python-version 27",