mac build: bump pyinstaller (4.2 -> 5.3)

contrib/osx/README.md

@@ -11,6 +11,9 @@ This guide explains how to build Electrum binaries for macOS systems.
 
 This needs to be done on a system running macOS or OS X.
 
+The script is only tested on Intel-based Macs, and the binary built
+targets `x86_64` currently.
+
 Notes about compatibility with different macOS versions:
 - In general the binary is not guaranteed to run on an older version of macOS
   than what the build machine has. This is due to bundling the compiled Python into

contrib/osx/make_osx

@@ -108,8 +108,8 @@ brew install autoconf automake libtool gettext coreutils pkgconfig
 
 info "Building PyInstaller."
 PYINSTALLER_REPO="https://github.com/pyinstaller/pyinstaller.git"
-PYINSTALLER_COMMIT="40c9abce2d8de879e414fd377c933dccaab1e156"
-# ^ tag "4.2"
+PYINSTALLER_COMMIT="fbf7948be85177dd44b41217e9f039e1d176de6b"
+# ^ tag "5.3"
 # TODO test newer versions of pyinstaller for build-reproducibility.
 #      we are using this version for now due to change in code-signing behaviour
 #      (https://github.com/pyinstaller/pyinstaller/pull/5581)
@@ -139,7 +139,6 @@ PYINSTALLER_COMMIT="40c9abce2d8de879e414fd377c933dccaab1e156"
     popd
     # sanity check bootloader is there:
     [[ -e "PyInstaller/bootloader/Darwin-64bit/runw" ]] || fail "Could not find runw in target dir!"
-    rm pyinstaller.py  # workaround for https://github.com/pyinstaller/pyinstaller/pull/6701
 ) || fail "PyInstaller build failed"
 info "Installing PyInstaller."
 python3 -m pip install --no-build-isolation --no-dependencies --no-warn-script-location "$CACHEDIR/pyinstaller"

contrib/osx/osx.spec

@@ -107,6 +107,7 @@ exe = EXE(
     upx=True,
     icon=electrum+ICONS_FILE,
     console=False,
+    target_arch='x86_64',  # TODO investigate building 'universal2'
 )
 
 app = BUNDLE(