Fix find build validator and use Python 3.8 for bundling

cddagl/ui/views/main.py

@@ -20,14 +20,16 @@
 from urllib.parse import urljoin
 
 import arrow
-from PyQt5.QtCore import Qt, QTimer, QUrl, QFileInfo, pyqtSignal, QStringListModel, QThread
+from PyQt5.QtCore import (
+    Qt, QTimer, QUrl, QFileInfo, pyqtSignal, QStringListModel, QThread, QRegularExpression
+)
 from PyQt5.QtNetwork import QNetworkAccessManager, QNetworkRequest
 from PyQt5.QtWidgets import (
     QApplication, QWidget, QGridLayout, QGroupBox, QVBoxLayout, QLabel, QLineEdit,
     QPushButton, QFileDialog, QToolButton, QProgressBar, QButtonGroup, QRadioButton,
     QComboBox, QTextBrowser, QMessageBox, QStyle, QHBoxLayout, QSizePolicy
 )
-from PyQt5.QtGui import QIntValidator
+from PyQt5.QtGui import QRegularExpressionValidator
 from babel.dates import format_datetime
 from pywintypes import error as PyWinError
 
@@ -1259,6 +1261,8 @@ def __init__(self):
         self.find_build_label = find_build_label
 
         find_build_value = QLineEdit()
+        find_build_value.setValidator(QRegularExpressionValidator(
+            QRegularExpression(r'\d+(-\d+)*')))
         find_build_value.returnPressed.connect(self.find_build)
         layout.addWidget(find_build_value, layout_row, 1, 1, 2)
         self.find_build_value = find_build_value

setup.py

@@ -116,8 +116,8 @@ def run(self):
         download_path.mkdir(parents=True, exist_ok=True)
 
         # Download Python embeddable package
-        python_embed_url = 'https://www.python.org/ftp/python/3.9.5/python-3.9.5-embed-amd64.zip'
-        python_embed_name = 'python-3.9.5-embed-amd64.zip'
+        python_embed_url = 'https://www.python.org/ftp/python/3.8.10/python-3.8.10-embed-amd64.zip'
+        python_embed_name = 'python-3.8.10-embed-amd64.zip'
 
         python_embed_archive = download_path.joinpath(python_embed_name)
         try: