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authorPaolo Bonzini <pbonzini@redhat.com>2023-05-03 12:48:02 +0200
committerPaolo Bonzini <pbonzini@redhat.com>2023-09-07 13:32:37 +0200
commitca056f4499c259c0de68ed7cefad7ee7b62bfa43 (patch)
tree9597db33c0556b3c48fa33d0c65316298e872be9 /python/Makefile
parenta5e9fbf1dfd5b3f901f987755c89f1dc636c3747 (diff)
downloadfocaccia-qemu-ca056f4499c259c0de68ed7cefad7ee7b62bfa43.tar.gz
focaccia-qemu-ca056f4499c259c0de68ed7cefad7ee7b62bfa43.zip
Python: Drop support for Python 3.7
Debian 10 is not anymore a supported distro, since Debian 12 was
released on June 10, 2023.  Our supported build platforms as of today
all support at least 3.8 (and all of them except for Ubuntu 20.04
support 3.9):

openSUSE Leap 15.5: 3.6.15 (3.11.2)
CentOS Stream 8:    3.6.8  (3.8.13, 3.9.16, 3.11.4)
CentOS Stream 9:    3.9.17 (3.11.4)
Fedora 37:          3.11.4
Fedora 38:          3.11.4
Debian 11:          3.9.2
Debian 12:          3.11.2
Alpine 3.14, 3.15:  3.9.16
Alpine 3.16, 3.17:  3.10.10
Ubuntu 20.04 LTS:   3.8.10
Ubuntu 22.04 LTS:   3.10.12
NetBSD 9.3:         3.9.13*
FreeBSD 12.4:       3.9.16
FreeBSD 13.1:       3.9.18
OpenBSD 7.2:        3.9.17

Note: NetBSD does not appear to have a default meta-package, but offers
several options, the lowest of which is 3.7.15. However, "python39"
appears to be a pre-requisite to one of the other packages we request
in tests/vm/netbsd.

Since it is safe under our supported platform policy, bump our
minimum supported version of Python to 3.8.  The two most interesting
features to have by default include:

- the importlib.metadata module, whose lack is responsible for over 100
  lines of code in mkvenv.py

- improvements to asyncio, for example asyncio.CancelledError
  inherits from BaseException rather than Exception

In addition, code can now use the assignment operator ':='

Because mypy now learns about importlib.metadata, a small change to
mkvenv.py is needed to pass type checking.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'python/Makefile')
-rw-r--r--python/Makefile8
1 files changed, 4 insertions, 4 deletions
diff --git a/python/Makefile b/python/Makefile
index 7c70dcc8d1..1fa4ba2498 100644
--- a/python/Makefile
+++ b/python/Makefile
@@ -9,13 +9,13 @@ help:
 	@echo "make check-minreqs:"
 	@echo "    Run tests in the minreqs virtual environment."
 	@echo "    These tests use the oldest dependencies."
-	@echo "    Requires: Python 3.7"
-	@echo "    Hint (Fedora): 'sudo dnf install python3.7'"
+	@echo "    Requires: Python 3.8"
+	@echo "    Hint (Fedora): 'sudo dnf install python3.8'"
 	@echo ""
 	@echo "make check-tox:"
 	@echo "    Run tests against multiple python versions."
 	@echo "    These tests use the newest dependencies."
-	@echo "    Requires: Python 3.7 - 3.11, and tox."
+	@echo "    Requires: Python 3.8 - 3.11, and tox."
 	@echo "    Hint (Fedora): 'sudo dnf install python3-tox python3.11'"
 	@echo "    The variable QEMU_TOX_EXTRA_ARGS can be use to pass extra"
 	@echo "    arguments to tox".
@@ -59,7 +59,7 @@ PIP_INSTALL = pip install --disable-pip-version-check
 min-venv: $(QEMU_MINVENV_DIR) $(QEMU_MINVENV_DIR)/bin/activate
 $(QEMU_MINVENV_DIR) $(QEMU_MINVENV_DIR)/bin/activate: setup.cfg tests/minreqs.txt
 	@echo "VENV $(QEMU_MINVENV_DIR)"
-	@python3.7 -m venv $(QEMU_MINVENV_DIR)
+	@python3.8 -m venv $(QEMU_MINVENV_DIR)
 	@(								\
 		echo "ACTIVATE $(QEMU_MINVENV_DIR)";			\
 		. $(QEMU_MINVENV_DIR)/bin/activate;			\