[Haskell-cafe] Cabal problem, broken packages?

[Volker Wysk]

Am Donnerstag, dem 15.09.2022 um 16:31 +0100 schrieb Tom Ellis:
> On Thu, Sep 15, 2022 at 05:23:10PM +0200, Volker Wysk wrote:
> > I've lately set up the Haskell environment on my Linux box, with no
> > problems. Then I have installed some packages with "cabal install", again
> > without problems. But now I'm trying to install another package and I get a
> > dependency conflict. It doesn't seem to matter which package I try to
> > install:
> 
> This is quite weird, because neither directory nor ghc are
> dependencies of rfc5051.
> 
> As a first step, can you try the following and report back whether you
> successfully get to a GHCi a prompt?
> 
> $ cabal repl -z --build-depends rfc5051

This results in:


desktop ~ $ cabal repl -z --build-depends rfc5051
Resolving dependencies...
Build profile: -w ghc-8.8.4 -O1
In order, the following will be built (use -v for more details):
 - rfc5051-0.2 (lib) (requires download & build)
 - fake-package-0 (lib) (first run)
Downloading  rfc5051-0.2
Downloaded   rfc5051-0.2
Starting     rfc5051-0.2 (lib)
Building     rfc5051-0.2 (lib)
Installing   rfc5051-0.2 (lib)
Completed    rfc5051-0.2 (lib)
Configuring library for fake-package-0..
Preprocessing library for fake-package-0..
Warning: No exposed modules
GHCi, version 8.8.4: https://www.haskell.org/ghc/  :? for help
Loaded GHCi configuration from /tmp/cabal-repl.-17863/setcwd.ghci
Prelude> 


Looks good, doesn't it..?

Volker