clear cache when compiler flags have changed

9 jobs for hash in 8 minutes and 48 seconds (queued for 4 seconds)
Status Job ID Name Coverage
  Test
passed #568021
docker
build-documentation

00:00:46

passed #568020
docker
flake8-lint

00:02:14

passed #568014
AVX docker
latest-python

00:03:25

passed #568017
cuda docker
minimal-conda

00:00:18

passed #568018
cuda docker
minimal-sympy-master

00:00:49

passed #568015
win
minimal-windows

00:08:46

manual #568019
AVX cuda11 docker allowed to fail manual
pycodegen-integration
passed #568013
AVX cuda11 docker
tests-and-coverage

00:03:53

88.13%
passed #568016
AVX cuda11 docker
ubuntu

00:02:26