Help with cabal

Herbert Valerio Riedel hvriedel at
Thu Apr 4 13:26:18 UTC 2019

On Thu, Apr 4, 2019 at 2:56 PM Simon Peyton Jones <simonpj at>

> Ah, so you installed the `cabal-install-3.0` package?
> Yes I attached your repo and then said
> apt install cabal-install
> and lo! cabal 3.0 appeared in /opt/cabal/bin

Ok, so here's the weird thing... I don't have any "cabal-install" package
in my PPA; I do however have a "cabal-install-3.0" package (i.e. the 3.0 is
part of the version number, because I supply one package per major version
of cabal).

So I'd expect you'd find something like

ii  cabal-install-3.0
 3.0+git20190317.1.b3d6d0b-6~16.04            amd64        Command-line
interface for Cabal and Hackage

if you executed `dpkg -l | grep cabal-install`... (i.e. the "version" is
that monstrous "3.0+git20190317.1.b3d6d0b-6~16.04"  thing)

> In the meantime you can just keep using your current cabal 3.0 exe; does
> `cabal --version` currently have any noticeable startup latency for you on
> WSL?

> No, no noticeable startup latency.

Interesting. I'll investigate... maybe I'll be able to discontinue the WSL
ppa at last... :-)

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