hgdemandimport: disable on Python 3.5 The demand importer functionality isn't working at all on Python 3.5. I'm not sure what's wrong. Since it isn't working, let's disable it completely. ``` $ HGRCPATH= hyperfine -w 1 -r 50 -- "~/.pyenv/versions/3.5.9/bin/python ./hg version" \ "HGDEMANDIMPORT=disable ~/.pyenv/versions/3.5.9/bin/python ./hg version" Benchmark #1: ~/.pyenv/versions/3.5.9/bin/python ./hg version Time (mean ? ?): 163.7 ms ? 2.2 ms [User: 148.5 ms, System: 15.7 ms] Range (min ? max): 161.0 ms ? 170.2 ms 50 runs Benchmark #2: HGDEMANDIMPORT=disable ~/.pyenv/versions/3.5.9/bin/python ./hg version Time (mean ? ?): 164.3 ms ? 1.4 ms [User: 148.2 ms, System: 16.6 ms] Range (min ? max): 161.4 ms ? 169.8 ms 50 runs ``` Differential Revision: https://phab.mercurial-scm.org/D7953

--- a/tests/test-demandimport.py	Sat Jan 18 11:13:01 2020 -0800
+++ b/tests/test-demandimport.py	Mon Jan 20 23:42:19 2020 -0800
@@ -22,6 +22,10 @@
 if sys.flags.optimize:
     sys.exit(80)
 
+# The demand importer doesn't work on Python 3.5.
+if sys.version_info[0:2] == (3, 5):
+    sys.exit(80)
+
 if ispy3:
     from importlib.util import _LazyModule