Remove xattr as hard dependency (#602)

* remove xattr and modify warning

* add repo variable

* change repo env variable

* fix env variable name

* maybe it is using the correct ref?

* remove commented out stuff

---------

Co-authored-by: Simon Bohnen <simonmbohnen@gmail.com>

.github/workflows/ci.yml

@@ -160,5 +160,3 @@ jobs:
         uses: jupyter-server/jupyter_releaser/.github/actions/check-release@v2
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
-        env:
-          RH_BRANCH: ${{ steps.branch-name.outputs.current_branch }}

quetz/pkgstores.py

@@ -12,6 +12,7 @@
 import os.path as path
 import shutil
 import tempfile
+import warnings
 from contextlib import contextmanager
 from os import PathLike
 from threading import Lock
@@ -26,6 +27,7 @@
     has_xattr = True
 except ImportError:
     has_xattr = False
+    warnings.warn("xattr not installed, not using it for file metadata")
 
 from quetz.errors import ConfigError
 

setup.cfg

@@ -44,7 +44,6 @@ install_requires =
   typing_extensions
   ujson
   uvicorn
-  xattr
   zstandard
 
 [options.entry_points]