ghc fails to find installed user package even though "ghc-pkg list" shows it

[xoltar]

Building haskell-cgi (Bjorn Bringert's) requires the xhtml package. I built and installed that package (with setup install --user, since I don't have root access on this box), and ghc-pkg list shows it in place. "./setup configure" in the haskell-cgi tree finds the xhtml package. However, when I go to "./setup build", it can't find the Text.Html module within the xhtml package. Perhaps there's something I'm doing wrong with the user packages settings?

[me@xoltar ~/src/haskell-cgi]$ ./setup build Preprocessing library cgi-compat-2006.10.28... Building cgi-compat-2006.10.28... Chasing modules from: Network.NewCGI,Network.CGI.Monad,Network.CGI.Protocol,Netw ork.CGI.Compat,Network.CGI.Cookie,Network.CGI.Multipart,Network.CGI.RFC822Header s Could not find module `Text.XHtml':

use -v to see a list of the files searched for (imported from ./Network/NewCGI.hs)

[me@xoltar ~/src/haskell-cgi]$ ghc-pkg list /usr/local/lib/ghc-6.4.2/package.conf:

Cabal-1.1.4, HUnit-1.1, QuickCheck?-1.0, base-1.0, (concurrent-1.0), (data-1.0), fgl-5.2, haskell-src-1.0, haskell98-1.0, (hssource-1.0), (lang-1.0), mtl-1.0, (net-1.0), network-1.0, parsec-1.0, (posix-1.0), readline-1.0, rts-1.0, stm-1.0, template-haskell-1.0, (text-1.0), unix-1.0, (util-1.0)

/home/private/.ghc/i386-freebsd-6.4.2/package.conf:

fps-0.8, xhtml-2006.9.13

[me@xoltar ~/src/haskell-cgi]$ ./setup build -v Preprocessing library cgi-compat-2006.10.28... Building cgi-compat-2006.10.28... /usr/local/bin/ghc -package-name cgi-compat --make -fallow-overlapping-instances

-fallow-undecidable-instances -O2 -Wall -hide-all-packages -i -idist/build/auto

gen -i. -odir dist/build -hidir dist/build -package base-1.0 -package network-1. 0 -package parsec-1.0 -package mtl-1.0 -package xhtml-2006.9.13 -package fps-0.8

Network.NewCGI Network.CGI.Monad Network.CGI.Protocol Network.CGI.Compat Networ

k.CGI.Cookie Network.CGI.Multipart Network.CGI.RFC822Headers Chasing modules from: Network.NewCGI,Network.CGI.Monad,Network.CGI.Protocol,Netw ork.CGI.Compat,Network.CGI.Cookie,Network.CGI.Multipart,Network.CGI.RFC822Header s Could not find module `Text.XHtml':

use -v to see a list of the files searched for (imported from ./Network/NewCGI.hs)

[me@xoltar ~/src/haskell-cgi]$

[xoltar]

Sorry about the formatting, should have marked it as preformatted...

[Lemmih]

Can you use Text.XHtml from ghci?

[xoltar]

No, and that gives a little more informative error message:

[me@xoltar /home/htdocs]$ ghci -package xhtml
   ___         ___ _
  / _ \ /\  /\/ __(_)
 / /_\// /_/ / /  | |      GHC Interactive, version 6.4.2, for Haskell 98.
/ /_\\/ __  / /___| |      http://www.haskell.org/ghc/
\____/\/ /_/\____/|_|      Type :? for help.

Loading package base-1.0 ... linking ... done.
Loading package haskell98-1.0 ... linking ... done.
Loading package xhtml-2006.9.13 ... ghc-6.4.2: can't load .so/.DLL for: HSxhtml-
2006.9.13 (Shared object "libHSxhtml-2006.9.13.so" not found, required by "ghc-6
.4.2")
[me@xoltar /home/htdocs]$

[xoltar]

Ah, got it. The problem is that when I initially configured the packages, I did:

./setup --prefix=~/ghc

and apparently using ~/ghc doesn't work at all, and though "./setup install" happily claims to be doing the work of installing to ~/ghc, it doesn't actually even create a directory.

However, if I provide an explicit path:

./setup --prefix=/home/private/ghc

then everything works fine. Thanks for your help.

[Lemmih]

Perhaps we should create a Cabal ticket for this.