[Haskell-cafe] Packages all screwed up

[Arnaud Bailly]

Hello,
I recently tried to upgrade some package (eg. yesod) and it seems
that, in the process, I screwed up my Haskell packages setup.
When I am trying to do a simple:
> ghc --make Crete1941

It fails with message:

Loader\Communication.hs:14:7:
    Could not find module `System.Process':
      Use -v to see a list of the files searched for.

which is quite annoying !

Is there a way to reconstruct a sane baseline ?

Thanks in advance
Arnaud

PS: In case it might be helpful, here is the output of ghc-pkg check -v

There are problems in package pandoc-1.6:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package zip-archive-0.1.1.6:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package url-2.1.2:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package filestore-0.3.4.3:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package happstack-server-0.5.0.2:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package happstack-data-0.5.0.2:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
There are problems in package feed-0.3.7:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package SHA-1.4.1.3:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
There are problems in package hashed-storage-0.5.3:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
There are problems in package yesod-0.6.0.2:
  dependency "cereal-0.3.0.0-835aef1b61feb29c879c2cdae5c16608" doesn't exist
  dependency "clientsession-0.4.0.3-83420d6960f048ed87e049bcfa4d3d35"
doesn't exist
  dependency "neither-0.1.0-50e3e802c117062181b91d4cbd45270b" doesn't exist
  dependency "wai-0.2.2-11adeb24d79e447264a1c6aa73a257e8" doesn't exist
There are problems in package xss-sanitize-0.2.2:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package web-routes-0.23.0:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package wai-extra-0.2.4:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
  dependency "wai-0.2.2-11adeb24d79e447264a1c6aa73a257e8" doesn't exist
  dependency "zlib-bindings-0.0.0-c2a6f489bd57d072e884afc1d6466b99"
doesn't exist
There are problems in package snap-server-0.2.11:
  dependency "cereal-0.3.0.0-835aef1b61feb29c879c2cdae5c16608" doesn't exist
  dependency "monads-fd-0.1.0.2-8e71857db7c17ae96ca5bff72f20d9fa" doesn't exist
There are problems in package snap-core-0.2.11:
  dependency "cereal-0.3.0.0-835aef1b61feb29c879c2cdae5c16608" doesn't exist
  dependency "monads-fd-0.1.0.2-8e71857db7c17ae96ca5bff72f20d9fa" doesn't exist
There are problems in package pureMD5-2.1.0.2:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
  dependency "cereal-0.3.0.0-835aef1b61feb29c879c2cdae5c16608" doesn't exist
There are problems in package persistent-0.3.0.1:
  dependency "neither-0.1.0-50e3e802c117062181b91d4cbd45270b" doesn't exist
There are problems in package hsx-0.7.0:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package HStringTemplate-0.6.5:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package HSlim-0.1:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package hint-0.3.3.0:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package haskeline-0.6.3.1:
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package happstack-state-0.5.0.2:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
  dependency "happstack-data-0.5.0.2-80c87686add000961445ac7ad8f41385"
doesn't exist
  dependency "happstack-util-0.5.0.2-781b128492ee5ce69eb3c01f6e6a02bb"
doesn't exist
There are problems in package happstack-ixset-0.5.0.2:
  dependency "happstack-data-0.5.0.2-80c87686add000961445ac7ad8f41385"
doesn't exist
  dependency "happstack-util-0.5.0.2-781b128492ee5ce69eb3c01f6e6a02bb"
doesn't exist
There are problems in package happstack-0.5.0.2:
  dependency "happstack-data-0.5.0.2-80c87686add000961445ac7ad8f41385"
doesn't exist
  dependency "happstack-server-0.5.0.2-9d48ec66664b8dd67d495020314c5d2b"
doesn't exist
  dependency "happstack-util-0.5.0.2-781b128492ee5ce69eb3c01f6e6a02bb"
doesn't exist
  dependency "utf8-string-0.3.6-02c7018b15768d3d72b99557d0f847ff" doesn't exist
There are problems in package crypto-api-0.1.2.4:
  dependency "cereal-0.3.0.0-835aef1b61feb29c879c2cdae5c16608" doesn't exist
There are problems in package bytestring-show-0.3.3:
  dependency "binary-0.5.0.2-0da250ded3b79a6e76d15de8e7ffc885" doesn't exist
There are problems in package attoparsec-iteratee-0.1.1:
  dependency "monads-fd-0.1.0.2-8e71857db7c17ae96ca5bff72f20d9fa" doesn't exist
There are problems in package regex-compat-0.93.1:
  dependency "regex-posix-0.94.2-0a3c1e41d8c2d26547372e229b3f776c" doesn't exist
There are problems in package haskell-platform-2010.2.0.0:
  dependency "regex-posix-0.94.2-0a3c1e41d8c2d26547372e229b3f776c" doesn't exist

The following packages are broken, either because they have a problem
listed above, or because they depend on a broken package.
pandoc-1.6
zip-archive-0.1.1.6
url-2.1.2
filestore-0.3.4.3
happstack-server-0.5.0.2
happstack-data-0.5.0.2
feed-0.3.7
SHA-1.4.1.3
hashed-storage-0.5.3
yesod-0.6.0.2
xss-sanitize-0.2.2
web-routes-0.23.0
wai-extra-0.2.4
snap-server-0.2.11
snap-core-0.2.11
pureMD5-2.1.0.2
persistent-0.3.0.1
hsx-0.7.0
HStringTemplate-0.6.5
HSlim-0.1
hint-0.3.3.0
haskeline-0.6.3.1
happstack-state-0.5.0.2
happstack-ixset-0.5.0.2
happstack-0.5.0.2
crypto-api-0.1.2.4
bytestring-show-0.3.3
attoparsec-iteratee-0.1.1
regex-compat-0.93.1
haskell-platform-2010.2.0.0
ConfigFile-1.0.6
MissingH-1.1.0.3
hsp-0.5.2
HJScript-0.5.0