Precisely because I value a diversity of features, and am tolerant of churn at the bottom of the tech stack (the compiler), I expect everything built over it will get wobbly from time to time. What I don’t expect is you could mix-and-match different versions of base with different releases of GHC. As if you could pull-push blocks in-out of the bottom of the Jenga tower, and keep the upper storeys somehow suspended from a sky-hook.
As I thought I made clear, I reverted to HUGS not because I’m an antedeluvian, not because GHC is moving too fast or is too unstable, but because GHC is moving sideways relative to where I want to go. And because I found I could understand and tweak the innards of HUGS.