Revert "Use PyQt/Qt 6.8"

This reverts commit 526dcfc.
PyQt 6.8 doesn't work on Red Hat 8 nor 9.

prereqs/PyQt/Makefile

@@ -10,9 +10,9 @@ PYQT_LICENSE = gpl
 
 USE_QT6 = true
 
-BASE_VERSION = 6.8
-QT_MINOR_VERSION = 1
-PYQT_MINOR_VERSION = 0
+BASE_VERSION = 6.7
+QT_MINOR_VERSION = 3
+PYQT_MINOR_VERSION = 1
 PYQTWE_MINOR_VERSION = 0
 
 MAKE_ARGS = -f Makefile.$(METHOD) BASE_VERSION=$(BASE_VERSION) PYQT_MINOR_VERSION=$(PYQT_MINOR_VERSION) QT_MINOR_VERSION=$(QT_MINOR_VERSION) PYQTWE_MINOR_VERSION=$(PYQTWE_MINOR_VERSION) PYQT_LICENSE=$(PYQT_LICENSE)

prereqs/PyQt/Makefile.wheel.qt6

@@ -9,11 +9,11 @@ REMOTE_HOST = plato.cgl.ucsf.edu:
 REMOTE_DIR = $(REMOTE_HOST)/usr/local/src/PyQt6
 
 # QT_VERSION is overriden by Makefile
-BASE_VERSION = 6.8
-QT_MINOR_VERSION = 1
-PYQT_MINOR_VERSION = 0
+BASE_VERSION = 6.7
+QT_MINOR_VERSION = 3
+PYQT_MINOR_VERSION = 1
 ifeq ($(OS),Linux)
-PYQT_REVISION =
+PYQT_REVISION = 1
 else
 PYQT_REVISION =
 endif
@@ -36,19 +36,14 @@ SIP_VERSION = 13.8.0
 ifeq (0, $(shell sort -CV <<< "$(PYQT_VERSION)"$$'\n'"6.6.0" && echo $$?))
 # PyQt version <= 6.6.0
 PYTHON_TAGS = cp37
-else ifeq (0, $(shell sort -CV <<< "$(PYQT_VERSION)"$$'\n'"6.7.99" && echo $$?))
-# PyQt version < 6.8
-PYTHON_TAGS = cp38
 else
-PYTHON_TAGS = cp39
+PYTHON_TAGS = cp38
 endif
 ifeq (0, $(shell sort -CV <<< "$(PYQTWE_VERSION)"$$'\n'"6.6.0" && echo $$?))
 # PyQt WebEngine version <= 6.6.0
 WE_PYTHON_TAGS = cp37
-else ifeq (0, $(shell sort -CV <<< "$(PYQT_VERSION)"$$'\n'"6.7.99" && echo $$?))
-WE_PYTHON_TAGS = cp38
 else
-WE_PYTHON_TAGS = cp39
+WE_PYTHON_TAGS = cp38
 endif
 WHEEL_ABI = abi3
 
@@ -62,11 +57,8 @@ BIN_PLATFORM = linux
 ifeq (0, $(shell sort -CV <<< "$(PYQT_VERSION)"$$'\n'"6.3.99" && echo $$?))
 # For PyQt version < 6.4
 WHEEL_PLATFORM = manylinux1_x86_64
-else ifeq (0, $(shell sort -CV <<< "$(PYQT_VERSION)"$$'\n'"6.7.99" && echo $$?))
-# For PyQt version < 6.4
-WHEEL_PLATFORM = manylinux_2_28_x86_64
 else
-WHEEL_PLATFORM = manylinux_2_35_x86_64
+WHEEL_PLATFORM = manylinux_2_28_x86_64
 endif
 WE_WHEEL_PLATFORM = $(WHEEL_PLATFORM)
 MISSING_QTWEBENGINE_DICT = PyQt6/Qt6/libexec/qtwebengine_dictionaries