fix update

updates.d/60-pipx.sh

@@ -1,4 +1,18 @@
 #!/bin/bash
 
-echo "Updating pipx applications..."
-pipx upgrade-all
+# pipx venvs are tied to the Python they were built with, so a Python upgrade
+# breaks them in a way `pipx upgrade-all` can't repair. Rebuild them when the
+# Python version changes, or when an upgrade fails.
+STAMP="$HOME/.local/state/coredesktop/pipx-python-version"
+CURRENT_PYTHON="$(python3 -c 'import sys; print("%d.%d" % sys.version_info[:2])')"
+
+if [ "$(cat "$STAMP" 2>/dev/null)" != "$CURRENT_PYTHON" ]; then
+    echo "Python changed to $CURRENT_PYTHON, reinstalling pipx applications..."
+    pipx reinstall-all
+else
+    echo "Updating pipx applications..."
+    if ! pipx upgrade-all; then
+        echo "pipx upgrade-all failed, reinstalling pipx applications..."
+        pipx reinstall-all
+    fi
+fi && mkdir -p "$(dirname "$STAMP")" && echo "$CURRENT_PYTHON" > "$STAMP"