Configuring loop-0.3.0...
Preprocessing library for loop-0.3.0..
Building library for loop-0.3.0..
[1 of 2] Compiling Control.Loop     ( src/Control/Loop.hs, .stack-work/dist/x86_64-linux/Cabal-2.4.0.1/build/Control/Loop.o )
[2 of 2] Compiling Control.Loop.Internal ( src/Control/Loop/Internal.hs, .stack-work/dist/x86_64-linux/Cabal-2.4.0.1/build/Control/Loop/Internal.o )
Installing library in /home/sv/.stack/snapshots/x86_64-linux/lts-13.22/8.6.5/lib/x86_64-linux-ghc-8.6.5/loop-0.3.0-KBOFzTkURfGITuXz2VUslN
Registering library for loop-0.3.0..