Add CUSTOM_COMPILE_COMMAND to pip-compile --upgrade invocation
Add CUSTOM_COMPILE_COMMAND to pip-compile --upgrade invocation

This is not released yet. Pending 1.10.x release
https://github.com/jazzband/pip-tools/commit/9900cd7ff9

lopopolo/hyperbola,lopopolo/hyperbola,lopopolo/hyperbola,lopopolo/hyperbola