Resolving dependencies... Downloading tracer-0.1 Downloaded tracer-0.1 Configuring tracer-0.1... Warning: Instead of 'ghc-options: -XDoAndIfThenElse' use 'extensions: DoAndIfThenElse' Preprocessing library for tracer-0.1.. Building library for tracer-0.1.. [1 of 1] Compiling Debug.Tracer ( Debug/Tracer.hs, dist/build/Debug/Tracer.o, dist/build/Debug/Tracer.dyn_o ) Debug/Tracer.hs:32:1: warning: [GHC-66111] [-Wunused-imports] The import of Control.Applicative is redundant except perhaps to import instances from Control.Applicative To import instances alone, use: import Control.Applicative() | 32 | import Control.Applicative (Applicative(..)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Debug/Tracer.hs:202:3: warning: [GHC-22705] [-Wnoncanonical-monad-instances] Noncanonical return definition detected in the instance declaration for Monad (TracerT p m). return will eventually be removed in favour of pure Suggested fix: Either remove definition for return (recommended) or define as return = pure See also: https://gitlab.haskell.org/ghc/ghc/-/wikis/proposal/monad-of-no-return | 202 | return x = TracerT $ seq x $ \p -> return (x, (pstep p)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Preprocessing library for tracer-0.1.. Running Haddock on library for tracer-0.1.. Warning: --source-* options are ignored when --hyperlinked-source is enabled. [1 of 1] Compiling Debug.Tracer ( Debug/Tracer.hs, nothing ) Debug/Tracer.hs:32:1: warning: [GHC-66111] [-Wunused-imports] The import of Control.Applicative is redundant except perhaps to import instances from Control.Applicative To import instances alone, use: import Control.Applicative() | 32 | import Control.Applicative (Applicative(..)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Debug/Tracer.hs:202:3: warning: [GHC-22705] [-Wnoncanonical-monad-instances] Noncanonical return definition detected in the instance declaration for Monad (TracerT p m). return will eventually be removed in favour of pure Suggested fix: Either remove definition for return (recommended) or define as return = pure See also: https://gitlab.haskell.org/ghc/ghc/-/wikis/proposal/monad-of-no-return | 202 | return x = TracerT $ seq x $ \p -> return (x, (pstep p)) | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Haddock coverage: Warning: 'TracerT' is ambiguous. It is defined * at Debug/Tracer.hs:168:25 * at Debug/Tracer.hs:168:1 You may be able to disambiguate the identifier by qualifying it or by specifying the type/value namespace explicitly. Defaulting to the one defined at Debug/Tracer.hs:168:1 100% ( 17 / 17) in 'Debug.Tracer' Warning: Debug.Tracer: could not find link destinations for: - Debug.Tracer.pinitial - Debug.Tracer.plabel - Debug.Tracer.pstep - Debug.Tracer.prewind - Debug.Tracer.ppush - Debug.Tracer.ppop - Debug.Tracer.ptrace Documentation created: dist/doc/html/tracer/, dist/doc/html/tracer/tracer.txt Installing library in /var/lib/hackage-doc-builder/build-cache/tmp-install/lib/x86_64-linux-ghc-9.8.4/tracer-0.1-KWGQeGxTPG2DYanXvwUJZ7 Completed tracer-0.1