PyInstallerのbootloaderをカスタマイズする

以下のコメントが非常に参考になった。 @y-chan に感謝する。
VOICEVOX#502 (comment)

Co-authored-by: Yuto Ashida <[email protected]>

Author: qryxip

.github/workflows/build.yml

@@ -270,6 +270,9 @@ jobs:
         run: |
           python -m pip install -r requirements-dev.txt
 
+          # Modify PyInstaller to enable NvOptimusEnablement and AmdPowerXpressRequestHighPerformance
+          ./build_util/modify_pyinstaller.bash
+
           # Download pyopenjtalk dictionary
           # try 5 times, sleep 5 seconds before retry
           for i in $(seq 5); do

build_util/modify_pyinstaller.bash

@@ -0,0 +1,21 @@
+#!/bin/bash
+
+set -eux
+
+pyinstaller_version=$(pyinstaller -v)
+tempdir=$(mktemp -dt modify_pyinstaller.XXXXXXXX)
+trap 'rm -rf "$tempdir"' EXIT
+git clone https://github.com/pyinstaller/pyinstaller.git "$tempdir" -b "v$pyinstaller_version" --depth 1
+cat > "$tempdir/bootloader/src/symbols.c" << EOF
+#ifdef _WIN32
+#include <windows.h>
+
+// https://docs.nvidia.com/gameworks/content/technologies/desktop/optimus.htm
+__declspec(dllexport) DWORD NvOptimusEnablement = 0x00000001;
+
+// https://gpuopen.com/learn/amdpowerxpressrequesthighperformance/
+__declspec(dllexport) DWORD AmdPowerXpressRequestHighPerformance = 0x00000001;
+#endif
+EOF
+(cd "$tempdir/bootloader" && python ./waf all)
+pip install -U "$tempdir"