Merge pull request #6430 from phadej/backport-install-z-to-3.2

Cabal/Cabal.cabal

Cabal/Distribution/Backpack/Configure.hs

Cabal/Distribution/Compat/Binary.hs

Cabal/Distribution/Parsec.hs

Cabal/Distribution/Simple/Build/Macros.hs

Cabal/Distribution/Simple/BuildTarget.hs

Cabal/Distribution/Simple/GHC.hs

Cabal/Distribution/Simple/GHCJS.hs

Cabal/Distribution/Simple/Haddock.hs

Cabal/Distribution/Simple/ShowBuildInfo.hs

Cabal/Distribution/Simple/Test/LibV09.hs

Cabal/Distribution/Simple/UHC.hs

Cabal/Distribution/Utils/Structured.hs

cabal-install/Distribution/Client/BuildReports/Storage.hs

cabal-install/Distribution/Client/CmdErrorMessages.hs

cabal-install/Distribution/Client/CmdInstall.hs

...tall/Distribution/Client/CmdInstall/ClientInstallFlags.hs

cabal-install/Distribution/Client/CmdRepl.hs

cabal-install/Distribution/Client/Compat/Semaphore.hs

cabal-install/Distribution/Client/Config.hs