Can now use get_toolchain_hierarchy.clear() to empty the cache

@ocaisa: duplicate of #1619?

Yup, merged there, closing

EasyBuild framework unit test suite PASSed (see https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2720/console for more details).

This pull request is now ready for review/testing.

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EasyBuild framework unit test suite FAILed.

See https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2721/console for more details.

Please fix the reported issues by pushing additional commits to the branch corresponding with this pull request; contact @boegel if you're not sure what to do.

@ocaisa: why reopen?

Ah I just added the cache clearing and want Jenkins to check if it was working...curiosity

EasyBuild framework unit test suite PASSed (see https://jenkins1.ugent.be/job/easybuild-framework-pr-builder/2723/console for more details).

This pull request is now ready for review/testing.

Please try and find someone who can tackle this; contact @boegel if you're not sure what to do.

And it works ;)