singletons-base-3.4: dependencies

Dependencies for singletons-base-3.4

library	base (>=4.20 && <4.21) pretty singletons (>=3.0 && <3.1) singletons-th (>=3.4 && <3.5) template-haskell (>=2.22 && <2.23) text (>=1.2) th-desugar (>=1.17 && <1.18)