Resolving dependencies... Starting indexed-profunctors-0.1.1.1 Starting indexed-traversable-0.1.2.1 Building indexed-profunctors-0.1.1.1 Building indexed-traversable-0.1.2.1 Completed indexed-profunctors-0.1.1.1 Completed indexed-traversable-0.1.2.1 Starting optics-core-0.4.1.1 Building optics-core-0.4.1.1 Completed optics-core-0.4.1.1 Starting optics-operators-0.1.0.0 Building optics-operators-0.1.0.0 Failed to install optics-operators-0.1.0.0 Build log ( /home/builder/.cabal/logs/ghc-9.2.4/optics-operators-0.1.0.0-2jySeFUjFY3EwjlGda4VGd.log ): cabal: Entering directory '/tmp/cabal-tmp-309252/optics-operators-0.1.0.0' Configuring optics-operators-0.1.0.0... Preprocessing executable 'readme' for optics-operators-0.1.0.0.. Building executable 'readme' for optics-operators-0.1.0.0.. ghc: could not execute: markdown-unlit cabal: Leaving directory '/tmp/cabal-tmp-309252/optics-operators-0.1.0.0' Error: cabal: Some packages failed to install: optics-operators-0.1.0.0-2jySeFUjFY3EwjlGda4VGd failed during the building phase. The exception was: ExitFailure 1