fix: Use getattr for tcl/tk library paths (#2945)

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: esafak

docs/changelog/2944.bugfix.rst

@@ -0,0 +1 @@
+Replaced direct references to tcl/tk library paths with getattr. By :user:`esafak`

src/virtualenv/activation/bash/__init__.py

@@ -15,8 +15,8 @@ def as_name(self, template):
     def replacements(self, creator, dest):
         data = super().replacements(creator, dest)
         data.update({
-            "__TCL_LIBRARY__": creator.interpreter.tcl_lib or "",
-            "__TK_LIBRARY__": creator.interpreter.tk_lib or "",
+            "__TCL_LIBRARY__": getattr(creator.interpreter, "tcl_lib", None) or "",
+            "__TK_LIBRARY__": getattr(creator.interpreter, "tk_lib", None) or "",
         })
         return data
 

src/virtualenv/activation/fish/__init__.py

@@ -10,8 +10,8 @@ def templates(self):
     def replacements(self, creator, dest):
         data = super().replacements(creator, dest)
         data.update({
-            "__TCL_LIBRARY__": creator.interpreter.tcl_lib or "",
-            "__TK_LIBRARY__": creator.interpreter.tk_lib or "",
+            "__TCL_LIBRARY__": getattr(creator.interpreter, "tcl_lib", None) or "",
+            "__TK_LIBRARY__": getattr(creator.interpreter, "tk_lib", None) or "",
         })
         return data
 

src/virtualenv/activation/nushell/__init__.py

@@ -34,8 +34,8 @@ def replacements(self, creator, dest_folder):  # noqa: ARG002
             "__VIRTUAL_ENV__": str(creator.dest),
             "__VIRTUAL_NAME__": creator.env_name,
             "__BIN_NAME__": str(creator.bin_dir.relative_to(creator.dest)),
-            "__TCL_LIBRARY__": creator.interpreter.tcl_lib or "",
-            "__TK_LIBRARY__": creator.interpreter.tk_lib or "",
+            "__TCL_LIBRARY__": getattr(creator.interpreter, "tcl_lib", None) or "",
+            "__TK_LIBRARY__": getattr(creator.interpreter, "tk_lib", None) or "",
         }
 
 

src/virtualenv/activation/via_template.py

@@ -47,8 +47,8 @@ def replacements(self, creator, dest_folder):  # noqa: ARG002
             "__VIRTUAL_NAME__": creator.env_name,
             "__BIN_NAME__": str(creator.bin_dir.relative_to(creator.dest)),
             "__PATH_SEP__": os.pathsep,
-            "__TCL_LIBRARY__": creator.interpreter.tcl_lib or "",
-            "__TK_LIBRARY__": creator.interpreter.tk_lib or "",
+            "__TCL_LIBRARY__": getattr(creator.interpreter, "tcl_lib", None) or "",
+            "__TK_LIBRARY__": getattr(creator.interpreter, "tk_lib", None) or "",
         }
 
     def _generate(self, replacements, templates, to_folder, creator):