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='2023-09-08 18:53:46 +0800'>2023-09-08</span></td><td><a href='/guix/commit/gnu/tests/ganeti.scm?id=a71ce15c73b211512e7eafbe325894a2be98845f'>services: ganeti: Fix tests.</a><span class='msg-avail'>...<span class='msg-tooltip'>* gnu/tests/ganeti.scm (run-ganeti-test)["force-start wconfd"]: Don't use
INVOKE.
["gnt-os list"]: Import (ice-9 textual-ports).
</span></span></td><td>Marius Bakke</td></tr>