[Haskell-cafe] --disable-{executable-}profiling cabal-install- with ghc-7.6.3

Johan Tibell johan.tibell at gmail.com
Tue Jan 13 16:08:59 UTC 2015

Just to separate two things: cabal-install, the executable itself, must be
compiled against a matching Cabal version. An external Setup executable can
be compiled against an older version, if that's all that's available. One
reason that only an old Cabal might be available is that you're using a
cabal-install against some old GHC version you have installed, which
shipped with an old Cabal.

It's a more friendly behavior than saying "you must upgrade Cabal".

On Tue, Jan 13, 2015 at 8:01 AM, Ozgur Akgun <ozgurakgun at gmail.com> wrote:

> On 13 January 2015 at 14:56, Johan Tibell <johan.tibell at gmail.com> wrote:
>> Chatted a bit with Duncan. cabal-install needs to be prepared to handle
>> calling older Cabal lib versions. In this case cabal-install needs to check
>> which Cabal install version was used (or rather, which of the available
>> versions it wants to use) and then call the setup executable correctly (in
>> this case not passing --disable-profiling to older Cabals, but instead
>> using the old flag.)
> This sounds reasonable. There must be a reason since you are not doing so
> already, but what is the reason for not requiring Cabal- for
> cabal-install- in the first place?
> Ozgur
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