Ok, I have got an ugly hack for you :-): 1. Change ghcOptions in yi/src/library/Yi/Main.hs: - ghcOptions = [], + ghcOptions = ["-auto-all", "-prof", "-osuf=p_o", "-hisuf=p_hi", "-rtsopts"], 2. Recompile yi with --enable-library-profiling: cabal configure --enable-library-profiling && cabal install --reinstall 3. Run yi first to get a compiled "real" executable. 4. Then call "real" executable from cache with profiling options. On any XDG-compatible (Unix-like) system cached binary should be like: ~/.cache/yi/yi-linux-x86_64 +RTS -Pa -- Enjoy! Michal
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