build all the UI files in one go

On macOS, the overhead of importing PyQt for each file far exceeds
any gains we get from incremental recompilation.

qt/aqt/forms/build_ui.py

@@ -1,17 +1,21 @@
 import re
 import sys
 import io
+import os
 from PyQt6.uic import compileUi
+from dataclasses import dataclass
+
 
 def compile(ui_file: str) -> str:
     buf = io.StringIO()
     compileUi(open(ui_file), buf)
     return buf.getvalue()
 
+
 def with_fixes_for_qt6(code: str) -> str:
     code = code.replace(
         "from PyQt6 import QtCore, QtGui, QtWidgets",
-        "from PyQt6 import QtCore, QtGui, QtWidgets\nfrom aqt.utils import tr\n"
+        "from PyQt6 import QtCore, QtGui, QtWidgets\nfrom aqt.utils import tr\n",
     )
     code = re.sub(
         r'(?:QtGui\.QApplication\.)?_?translate\(".*?", "(.*?)"', "tr.\\1(", code
@@ -28,28 +32,54 @@ def with_fixes_for_qt6(code: str) -> str:
         if line == "from . import icons_rc":
             continue
         line = line.replace(":/icons/", "icons:")
-        line = line.replace("QAction.PreferencesRole", "QAction.MenuRole.PreferencesRole")
+        line = line.replace(
+            "QAction.PreferencesRole", "QAction.MenuRole.PreferencesRole"
+        )
         line = line.replace("QAction.AboutRole", "QAction.MenuRole.AboutRole")
-        line = line.replace("QComboBox.AdjustToMinimumContentsLength", "QComboBox.SizeAdjustPolicy.AdjustToMinimumContentsLength")
+        line = line.replace(
+            "QComboBox.AdjustToMinimumContentsLength",
+            "QComboBox.SizeAdjustPolicy.AdjustToMinimumContentsLength",
+        )
         outlines.append(line)
     return "\n".join(outlines)
 
+
 def with_fixes_for_qt5(code: str) -> str:
     code = code.replace("Qt6", "Qt5")
     code = code.replace("QtGui.QAction", "QtWidgets.QAction")
     return code
 
+
+@dataclass
+class UiFileAndOutputs:
+    ui_file: str
+    qt5_file: str
+    qt6_file: str
+
+
+def get_files() -> list[UiFileAndOutputs]:
+    ui_folder = os.path.dirname(sys.argv[1])
+    py_folder = os.path.dirname(sys.argv[2])
+    out = []
+    for file in os.listdir(ui_folder):
+        if file.endswith(".ui"):
+            base = os.path.splitext(os.path.basename(file))[0]
+            out.append(
+                UiFileAndOutputs(
+                    ui_file=os.path.join(ui_folder, file),
+                    qt5_file=os.path.join(py_folder, base + "_qt5.py"),
+                    qt6_file=os.path.join(py_folder, base + "_qt6.py"),
+                )
+            )
+    return out
+
+
 if __name__ == "__main__":
-    ui_file = sys.argv[1]
-    py5_file = sys.argv[2]
-    py6_file = sys.argv[3]
-
-    stock = compile(ui_file)
-    for_qt6 = with_fixes_for_qt6(stock)
-    for_qt5 = with_fixes_for_qt5(for_qt6)
-
-    with open(py5_file, "w") as file:
-        file.write(for_qt5)
-
-    with open(py6_file, "w") as file:
-        file.write(for_qt6)
+    for entry in get_files():
+        stock = compile(entry.ui_file)
+        for_qt6 = with_fixes_for_qt6(stock)
+        for_qt5 = with_fixes_for_qt5(for_qt6)
+        with open(entry.qt5_file, "w") as file:
+            file.write(for_qt5)
+        with open(entry.qt6_file, "w") as file:
+            file.write(for_qt6)

qt/aqt/forms/compile.bzl

@@ -1,20 +1,3 @@
-def compile(name, ui_file, qt5_file, qt6_file, builder):
-    native.genrule(
-        name = name,
-        srcs = [ui_file],
-        outs = [qt5_file, qt6_file],
-        cmd = "$(location {builder}) $(location {ui_file}) $(location {qt5_file}) $(location {qt6_file})".format(
-            builder = builder,
-            ui_file = ui_file,
-            qt5_file = qt5_file,
-            qt6_file = qt6_file,
-        ),
-        tools = [
-            builder,
-        ],
-        message = "Building UI",
-    )
-
 def compile_all(name, builder, srcs):
     py_files = []
     for ui_file in srcs:
@@ -22,7 +5,21 @@ def compile_all(name, builder, srcs):
         qt5_file = base + "_qt5.py"
         qt6_file = base + "_qt6.py"
         py_files.extend([qt5_file, qt6_file])
-        compile(base, ui_file, qt5_file, qt6_file, builder)
+
+    native.genrule(
+        name = name + "_build",
+        srcs = srcs,
+        outs = py_files,
+        cmd = "$(location {builder}) $(location {first_ui}) $(location {first_py})".format(
+            builder = builder,
+            first_ui = srcs[0],
+            first_py = py_files[0],
+        ),
+        tools = [
+            builder,
+        ],
+        message = "Building Qt UI",
+    )
 
     native.filegroup(
         name = name,