bug#47335: Hide GHC not used for building Was: xmonad fails to recompile on guix system

2021-09-15 Thread zimoun
Hi,

On Wed, 15 Sept 2021 at 13:02, Xinglu Chen  wrote:

> Agreed, but I guess using the ‘-next’ suffix was be the easiest
> workaround for now.

Yeah but more than often, the workarounds remain longer than expected
and thus they cannot be considered as workaround. ;-)

> Maybe running ‘guix install ghc’ should install the GHC package that the
> ‘ghc’ variable refers to.  Then this would not only apply to language
> ecosystems, but all packages in general.  Right now running ‘guix
> install rsync’ installs the ‘rsync-next’ package, but I would expect it
> to install the package that the ‘rsync’ variable is bound to.

Well, the name has to be distinguished from the symbol.  The symbol
name does not matter from a CLI point of view; and usually not so much
from a regular user perspective.

What really matters, IMHO, is the name and the version.  Basically,
"guix install foo" will install the latest version of the package
'foo'.  To avoid this, the trick is to tweak to the name of the latest
version.  It is what happens with 'rsync'; so to be in agreement with
the '-next' approach, the name should be 'rsync-next' and not 'rsync'.

Anyway, we all agree that something is odd. :-)

Cheers,
simon





bug#47335: Hide GHC not used for building Was: xmonad fails to recompile on guix system

2021-09-15 Thread Xinglu Chen
On Wed, Sep 15 2021, zimoun wrote:

> Hi,
>
> On Wed, 15 Sept 2021 at 09:43, Lars-Dominik Braun  wrote:
>
>> > I'd be very much in favor of the latter, or maybe rename it to ghc-next.
>> > I have some profiles ghc pinned to a version and upgrading those is
>> > always a mess because Guix tries to build the old version from source
>> > instead of using the next version.
>>
>> I renamed ghc@8.8 to ghc-next in commit
>> 39b43d0d0428474a1d0bf58779d0135163b9c6e3.
>
> Well, I am late to the party and probably out of point but I think
> this '-next' is not something we should introduce and generalize.
> Well, who knows if these '-next' will be the real next. ;-)   My
> comment is also about guile-next, emacs-next and python-next.  Noting
> that gcc-toolchain does not have a '-next'; packages are built using
> 7.5.0 but "guix install gcc-toolchain" will install 11.2.0 and then it
> could lead to the same issue as the one reported with GHC, I guess.
>
> Instead of this '-next' trick, we should find a better mechanism where
> "guix install ghc" would install the default GHC used by the Haskell
> build-system.  Idem for the others guile-next, python-next etc..  And
> any other version should be installed using  the explicit mention,
> i.e., "guix install ghc@8.8", IMHO.

Agreed, but I guess using the ‘-next’ suffix was be the easiest
workaround for now.

Maybe running ‘guix install ghc’ should install the GHC package that the
‘ghc’ variable refers to.  Then this would not only apply to language
ecosystems, but all packages in general.  Right now running ‘guix
install rsync’ installs the ‘rsync-next’ package, but I would expect it
to install the package that the ‘rsync’ variable is bound to.


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bug#47335: Hide GHC not used for building Was: xmonad fails to recompile on guix system

2021-09-15 Thread zimoun
Hi,

On Wed, 15 Sept 2021 at 09:43, Lars-Dominik Braun  wrote:

> > I'd be very much in favor of the latter, or maybe rename it to ghc-next.
> > I have some profiles ghc pinned to a version and upgrading those is
> > always a mess because Guix tries to build the old version from source
> > instead of using the next version.
>
> I renamed ghc@8.8 to ghc-next in commit
> 39b43d0d0428474a1d0bf58779d0135163b9c6e3.

Well, I am late to the party and probably out of point but I think
this '-next' is not something we should introduce and generalize.
Well, who knows if these '-next' will be the real next. ;-)   My
comment is also about guile-next, emacs-next and python-next.  Noting
that gcc-toolchain does not have a '-next'; packages are built using
7.5.0 but "guix install gcc-toolchain" will install 11.2.0 and then it
could lead to the same issue as the one reported with GHC, I guess.

Instead of this '-next' trick, we should find a better mechanism where
"guix install ghc" would install the default GHC used by the Haskell
build-system.  Idem for the others guile-next, python-next etc..  And
any other version should be installed using  the explicit mention,
i.e., "guix install ghc@8.8", IMHO.

Cheers,
simon





bug#47335: Hide GHC not used for building Was: xmonad fails to recompile on guix system

2021-09-15 Thread Lars-Dominik Braun
Hi,

> I'd be very much in favor of the latter, or maybe rename it to ghc-next.
> I have some profiles ghc pinned to a version and upgrading those is
> always a mess because Guix tries to build the old version from source
> instead of using the next version.
I renamed ghc@8.8 to ghc-next in commit
39b43d0d0428474a1d0bf58779d0135163b9c6e3.

Cheers,
Lars






bug#47335: Hide GHC not used for building Was: xmonad fails to recompile on guix system

2021-08-01 Thread raingloom
On Mon, 26 Jul 2021 08:47:53 +0200
Lars-Dominik Braun  wrote:

> Hi,
> 
> I’m seeing the same issue, but it works when explicitly installing
> ghc@8.6.  Looking at haskell-build-system all Haskell libraries are
> currently built with version 8.6, whereas the newest GHC version
> available (and thus installed by `guix install`) is 8.8.
> 
> I feel that either xmonad should depend on the correct GHC or all
> GHC versions not used to build libraries should be hidden to avoid
> this situation.
> 
> Lars
> 
> 
> 
> 

I'd be very much in favor of the latter, or maybe rename it to ghc-next.
I have some profiles ghc pinned to a version and upgrading those is
always a mess because Guix tries to build the old version from source
instead of using the next version.