That’s not realistic or “fair” - most Haskell projects will use a dozen or so extensions easily. GHC has been a platform for language experimentation for a long time; standardisation efforts keep on cropping up in annual surveys. (Eg, swapping in Text for String in base is long overdue, but it’s a hold over from days where FP pedagogy was seen as more important.)
GHC has had experimental support for linear types in Haskell since version 9.0.1
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That’s not realistic or “fair” - most Haskell projects will use a dozen or so extensions easily. GHC has been a platform for language experimentation for a long time; standardisation efforts keep on cropping up in annual surveys. (Eg, swapping in Text for String in base is long overdue, but it’s a hold over from days where FP pedagogy was seen as more important.)