link executables dynamically to speed up linking

cabal.project

@@ -17,6 +17,10 @@ benchmarks: True
 
 write-ghc-environment-files: never
 
+-- Link executables dynamically so the linker doesn't produce test
+-- executables of ~150MB each and works lightning fast at that too
+executable-dynamic: True
+
 -- Many of our tests only work single-threaded, and the only way to
 -- ensure tasty runs everything purely single-threaded is to pass
 -- this at the top-level