Re: [Haskell-cafe] lambdabot check

25 May 2011

      On Wed, 25 May 2011 13:20:19 +0200, Jacek Generowicz  wrote:
...
Hi Mark,
Thanks for your wonderfully lucid, concise and complete explanation of  
the problem and its solution (included below).
When I apply your patch and reinstall lambabot, I now get the  
following problem:
lambdabot> check True
   Could not find module `ShowIO`:
    It is a member of the hidden package `show-0.3.4`.
    Use -v to see a list of the files searched for.
I recognize the message about -v as a ghci one. How could I inject  
this -v into lambabot ?
Hi Jacek,

I don't know how to inject the -v into lambdabot, I guess I must
of debugged this earlier by grep'ing in the lambdabot and show source
files for ShowIO.
...
I get the same error on both of the machines on which I am trying  
this. On one of them I already have show-0.3.4 and show-0.4.1.1, on  
the other I have only show-0.4.1.1.
Any suggestions?
The show module names were changed in the upgrade from show 0.3.4 to
show 0.4.1.1.  On gentoo I conditionally sed lambdabot to account
for this, then print out a note that the user may need to copy
the State/* files, in particular L.hs and Pristine.hs for this problem,
to ~/.lambdabot/State.

src_prepare() {
	cd "${S}"
	epatch "${FILESDIR}/${P}-eval.patch"
	if has_version "=dev-haskell/show-0.4.1.1"; then
		sed -e 's@import ShowIO@import ShowFun@' \
			-i "${S}/State/L.hs" \
			-i "${S}/State/Pristine.hs" \
			|| die "Could patch State/L.hs and State/Pristine.hs for show upgrade"
	fi
}

pkg_postinst() {
	ghc-package_pkg_postinst
	elog "It may be necessary to: mkdir -p ~/.lambdabot/State && cp /usr/share/lambdabot-*/ghc-*/State/* ~/.lambdabot/State"
}

Thanks, Mark

PS the lambdabot gentoo ebuild is here:
https://github.com/gentoo-haskell/gentoo-haskell/blob/57501a585edd8587d89ed6...
...
On 2011 May 25, at 06:06, Mark Wright wrote:
...
Hi Jacek and Gwern,
In the upgrade from mueval from 0.8 to 0.8.1, some of the mueval  
command
line options were changed:
--loadfile  =>  --load-file
--noimports =>  --no-imports
For Plugins/Check.hs I change --loadfile to -l.
To convince lambdabot to run on gentoo, I patch it to use --no- 
imports to
avoid this problem:
% mueval -e '1 + 2'
Ambiguous module name `Control.Monad.Cont':
 it was found in multiple packages:
 monads-fd-0.1.0.2 mtl-2.0.1.0 monads-tf-0.1.0.0
%
And I patch the lambdabot /usr/share/lambdabot-4.2.3.2/ghc-7.0.3/ 
State/L.hs
to used -XPackageImports.  Then mueval works:
% mueval --no-imports -l ~/.lambdabot/State/L.hs -e '1 + 2'
3
%
And lambdabot works:
% lambdabot
Initialising  
plugins ................................................... done.
lambdabot> @check True
 +++ OK, passed 100 tests.
"OK, passed 100 tests."
lambdabot>
The patch is here:
https://github.com/markwright/gentoo-haskell/blob/master/dev-haskell/lambdab...
Regards, Mark