fix: honor Python requirement specifiers and portable script discovery

back/config/util.ts

@@ -739,10 +739,30 @@ export function getGetCommand(type: DependenceTypes, name: string): string {
   const baseCommands = {
     [DependenceTypes.nodejs]: `pnpm ls -g  | grep "${trimmedName}" | head -1`,
     [DependenceTypes.python3]: `${getPythonExecutable()} -c ${shellQuote(
-      `from importlib.metadata import version\nimport importlib.util as u\nname=${JSON.stringify(
-        trimmedName,
-      )}\ntry:\n print(version(name))\nexcept Exception:\n print(name if u.find_spec(name) else '')`,
-    )}`,
+      `from importlib.metadata import version, PackageNotFoundError
+import importlib.util
+import sys
+try:
+ try:
+  from packaging.requirements import Requirement
+ except ImportError:
+  from pip._vendor.packaging.requirements import Requirement
+ requirement = Requirement(sys.argv[1])
+ if requirement.marker and not requirement.marker.evaluate():
+  print('not applicable')
+ else:
+  try:
+   installed = version(requirement.name)
+  except PackageNotFoundError:
+   if not requirement.specifier and not requirement.extras and not requirement.url:
+    if importlib.util.find_spec(requirement.name):
+     print(requirement.name)
+  else:
+   if requirement.specifier.contains(installed, prereleases=True):
+    print(installed)
+except Exception:
+ pass`,
+    )} ${shellQuote(trimmedName)}`,
     [DependenceTypes.linux]:
       getOsTypeSync() === 'Alpine'
         ? `apk info -es ${trimmedName}`
@@ -827,9 +847,13 @@ export function getUninstallCommand(
         'Remove installed Python distributions separately by package name.',
       )}`;
     }
+    const packageName =
+      name.match(
+        /^([A-Za-z0-9][A-Za-z0-9._-]*)(?:\[[^\]]+\])?(?=\s*(?:[<>=!~;@]|$))/,
+      )?.[1] || name;
     return `${getPythonPip()} uninstall --disable-pip-version-check${
       PYTHON_VENV_DIR ? '' : ' --root-user-action=ignore'
-    } -y -- ${shellQuote(name)}`;
+    } -y -- ${shellQuote(packageName)}`;
   }
   const baseCommands = {
     [DependenceTypes.nodejs]: 'pnpm remove -g',