Corrected parent python determination for package subcommand

pyproject.toml

@@ -1,5 +1,5 @@
 [build-system]
-requires = ["setuptools", "wheel"]
+requires = ["setuptools"]
 build-backend = "setuptools.build_meta"
 
 [tool.ruff]

src/pickley/__init__.py

@@ -385,7 +385,7 @@ def __init__(self, given_package_spec: str, authoritative=False, settings=None):
             self.auto_upgrade_spec = given_package_spec
             runez.log.trace(f"Authoritative auto-upgrade spec '{self.auto_upgrade_spec}'")
 
-        else:
+        elif self._canonical_name:
             # Non-authoritative specs are necessarily canonical names (since only authoritative specs can refer to git urls, etc.)
             manifest = self.manifest
             if manifest and manifest.settings and manifest.settings.auto_upgrade_spec:
@@ -398,6 +398,10 @@ def __init__(self, given_package_spec: str, authoritative=False, settings=None):
                 runez.log.trace(f"Assuming auto-upgrade spec '{self._canonical_name}'")
                 self.auto_upgrade_spec = self._canonical_name
 
+        else:
+            # Should not be reachable, unless we are given a non-authoritative spec that is not a canonical name
+            self.auto_upgrade_spec = given_package_spec
+
         cache_file_name = self.auto_upgrade_spec
         if PypiStd.std_package_name(cache_file_name) != cache_file_name:
             # If package spec is not a canonical name, use md5 hash of it as filename
@@ -501,7 +505,7 @@ def target_installation_folder(self):
     def upgrade_reason(self):
         """Reason this package spec needs an upgrade (if any)"""
         if self.currently_installed_version != self.target_version:
-            return "new version available"
+            return f"new version available, current version is {self.currently_installed_version}"
 
         manifest = self.manifest
         if not manifest:

src/pickley/package.py

@@ -1,3 +1,4 @@
+import logging
 import os
 from pathlib import Path
 from typing import List, TYPE_CHECKING
@@ -11,6 +12,8 @@
 if TYPE_CHECKING:
     from pickley.cli import Requirements
 
+LOG = logging.getLogger(__name__)
+
 
 class PythonVenv:
     """Python virtual environment as seen by pickley, typically in <base>/.pk/<package>-<version>/"""
@@ -138,13 +141,19 @@ def find_symbolic_invoker() -> str:
     """Symbolic major/minor symlink to invoker, when applicable"""
     invoker = runez.SYS_INFO.invoker_python
     folder = invoker.real_exe.parent.parent
+    LOG.info("Invoker python: %s", invoker)
     v = Version.extracted_from_text(folder.name)
     found = invoker.executable
     if v and v.given_components_count == 3:
         # For setups that provide a <folder>/pythonM.m -> <folder>/pythonM.m.p symlink, prefer the major/minor variant
-        candidates = [folder.parent / folder.name.replace(v.text, v.mm), folder.parent / f"python{v.mm}"]
+        candidates = []
+        for candidate in (folder.name.replace(v.text, v.mm), f"python{v.mm}"):
+            candidates.append(folder.parent / candidate)
+            candidates.append(folder.parent / candidate / "bin" / f"python{v.mm}")
+
         for path in candidates:
             if runez.is_executable(path):
+                LOG.info("Found symbolic invoker: %s", path)
                 found = path
                 break