Comment (by Roland Haas):

If this depends on setting CACTUS_CONFIGS_DIR by the user (or having configs somewhere other than Cactus/configs) then I am tempted to downgrade to “minor” since it would not seem to require attention beore the next release.

About Formaline’s setting of CACTUS_CONFIGS_DIR, as far as I can tell it should best not do any such thing and instead use CONFIGS_DIR which the main Cactus Makefile exports to make available to sub-makes.

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Ticket URL: https://bitbucket.org/einsteintoolkit/tickets/issues/2236/formaline-fails-for-trying-to-remove-non