I think you wanted v1-install to install a library into the user package database, since your cabal is 3.x and the v2-* commands are now the default (that is, you did what used to be cabal new-install or cabal v2-install).
On Mon, Apr 15, 2019 at 5:47 PM Simon Peyton Jones via ghc-devs < ghc-devs@haskell.org> wrote: > I’m trying to install ‘hspec’ on my WSL (Windows subsystem for Linux) > system. > > But I fail; see below. > > For some reason cabal complains about installing a library. (That seems > peculiar – isn’t that what cabal is for?) But it helpfully suggests adding > –lib. > > Alas, cabal then crashes outright, which should never happen. > > So I’m stuck. What should I do? > > Thanks > > Simon > > > > simonpj@MSRC-9870733:~$ cabal --version > > cabal-install version 3.0.0.0 > > compiled using version 3.0.0.0 of the Cabal library > > simonpj@MSRC-9870733:~$ cabal install hspec > > Resolving dependencies... > > Up to date > > Warning: You asked to install executables, but there are no executables in > > target: hspec. Perhaps you want to use --lib to install libraries instead. > > simonpj@MSRC-9870733:~$ cabal install --lib hspec > > Resolving dependencies... > > Up to date > > Distribution/Simple/GHC.hs:1959:5-56: Irrefutable pattern failed for > pattern Just ghcPkgProg > > > > simonpj@MSRC-9870733:~$ which ghc > > /opt/ghc/bin/ghc > > simonpj@MSRC-9870733:~$ which ghc-pkg > > /opt/ghc/bin/ghc-pkg > > simonpj@MSRC-9870733:~$ > > > _______________________________________________ > ghc-devs mailing list > ghc-devs@haskell.org > http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs > -- brandon s allbery kf8nh allber...@gmail.com
_______________________________________________ ghc-devs mailing list ghc-devs@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/ghc-devs
