Retain environment setting of "HOME" for tests that need os.path.expanduser()
to return a readable directory in the build chroot.

--- thefuck-3.25/tests/conftest.py
+++ thefuck-3.25/tests/conftest.py
@@ -64,6 +64,7 @@ def set_shell(monkeypatch):
 
 @pytest.fixture(autouse=True)
 def os_environ(monkeypatch):
-    env = {'PATH': os.environ['PATH']}
+    env = {'PATH': os.environ['PATH'],
+           'HOME': os.environ['HOME']}
     monkeypatch.setattr('os.environ', env)
     return env
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<tr><td><span title='2021-05-10 22:34:43 -0400'>2021-05-10</span></td><td><a href='/guix/commit/po/packages/sk.po?id=21fcced608c93e1ac836cdd9ab8c5d200c667e75'>nls: Update translations.</a></td><td>Maxim Cournoyer</td></tr>
<tr><td><span title='2021-04-18 13:18:13 +0200'>2021-04-18</span></td><td><a href='/guix/commit/po/packages/sk.po?id=77c6c0aa577939da4d35a1ba95ea998459a3f337'>nls: Add Slovak translation.</a><span class='msg-avail'>...<span class='msg-tooltip'>* po/packages/sk.po: New file.
* po/packages/LINGUAS: Add 'sk'.
* po/doc/guix-manual.sk.po: New file.
* doc/local.mk (info_TEXINFOS): Add it.
* po/doc/local.mk (DOC_PO_FILES): Add it.
</span></span></td><td>Julien Lepiller</td></tr>