tests: replace check-venv with vm-venv target

With the qemu.qmp and qemu.machine dependencies now installed by default
at configure time and additional dependencies required by functional
testing installed on demand, we do not need the explicit "check-venv" target.

...However, to facilitate running VM tests without running configure, we
move some of the former logic into tests/vm/Makefile.include to create a
new venv (vm-venv) on-demand when running VM tests from the source tree.

Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-ID: <20260218213416.674483-17-jsnow@redhat.com>
Signed-off-by: John Snow <jsnow@redhat.com>

tests/Makefile.include

@@ -22,7 +22,6 @@ ifneq ($(filter $(all-check-targets), check-softfloat),)
 endif
 	@echo
 	@echo " $(MAKE) check-report.junit.xml        Generates an aggregated XML test report"
-	@echo " $(MAKE) check-venv                    Creates a Python venv for tests"
 	@echo " $(MAKE) check-clean                   Clean the tests and related data"
 	@echo
 	@echo "The following are useful for CI builds"
@@ -93,33 +92,16 @@ clean-tcg: $(CLEAN_TCG_TARGET_RULES)
 .PHONY: distclean-tcg
 distclean-tcg: $(DISTCLEAN_TCG_TARGET_RULES)
 
-# Python venv for running tests
-
-.PHONY: check-venv
-
 # Build up our target list from the filtered list of ninja targets
 TARGETS=$(patsubst libqemu-%.a, %, $(filter libqemu-%.a, $(ninja-targets)))
 
-TESTS_VENV_TOKEN=$(BUILD_DIR)/pyvenv/tests.group
-
-quiet-venv-pip = $(quiet-@)$(call quiet-command-run, \
-    $(PYTHON) -m pip -q --disable-pip-version-check $1, \
-    "VENVPIP","$1")
-
-$(TESTS_VENV_TOKEN): $(SRC_PATH)/pythondeps.toml
-	$(call quiet-venv-pip,install -e "$(SRC_PATH)/python/")
-	$(MKVENV_ENSUREGROUP) $< tooling functests
-	$(call quiet-command, touch $@)
-
-check-venv: $(TESTS_VENV_TOKEN)
-
 FUNCTIONAL_TARGETS=$(patsubst %-softmmu,check-functional-%, $(filter %-softmmu,$(TARGETS)))
 .PHONY: $(FUNCTIONAL_TARGETS)
-$(FUNCTIONAL_TARGETS): check-venv
+$(FUNCTIONAL_TARGETS):
 	@$(MAKE) SPEED=thorough $(subst -functional,-func,$@)
 
 .PHONY: check-functional
-check-functional: check-venv
+check-functional:
 	@$(NINJA) precache-functional
 	@$(PYTHON) $(SRC_PATH)/scripts/clean_functional_cache.py
 	@QEMU_TEST_NO_DOWNLOAD=1 $(MAKE) SPEED=thorough check-func check-func-quick

tests/vm/Makefile.include

@@ -2,13 +2,25 @@
 
 # Hack to allow running in an unconfigured build tree
 ifeq ($(realpath $(SRC_PATH)),$(realpath .))
-VM_PYTHON = PYTHONPATH=$(SRC_PATH)/python /usr/bin/env python3
-VM_VENV =
+VM_PYTHON = $(SRC_PATH)/vm-venv/bin/python3
+VM_VENV = vm-venv
 else
 VM_PYTHON = $(PYTHON)
-VM_VENV = check-venv
+VM_VENV =
 endif
 
+VM_VENV_TOKEN=$(SRC_PATH)/vm-venv/tooling.group $(SRC_PATH)/vm-venv/functests.group
+
+$(VM_VENV_TOKEN): $(SRC_PATH)/pythondeps.toml
+	/usr/bin/env python3 $(SRC_PATH)/python/scripts/mkvenv.py create vm-venv
+	$(SRC_PATH)/vm-venv/bin/python3 \
+	$(SRC_PATH)/python/scripts/mkvenv.py ensuregroup --online \
+	$(SRC_PATH)/pythondeps.toml tooling functests
+
+.PHONY: vm-venv
+vm-venv: $(VM_VENV_TOKEN)
+# end hackery
+
 .PHONY: vm-build-all vm-clean-all
 
 EFI_AARCH64 = $(wildcard $(BUILD_DIR)/pc-bios/edk2-aarch64-code.fd)
@@ -102,7 +114,7 @@ $(IMAGES_DIR)/%.img:	$(SRC_PATH)/tests/vm/% \
 		$(if $(LOG_CONSOLE),--log-console) \
 		--source-path $(SRC_PATH) \
 		--image "$@" \
-		$(if $(filter-out check-venv, $?), --force) \
+		--force \
 		--build-image $@, \
 		"  VM-IMAGE $*")