[Bug 1192737] New: Haskell can't be updated - "nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1) needed by alex-3.1.3-1.fc22.x86_64."

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1192737

            Bug ID: 1192737
           Summary: Haskell can't be updated - "nothing provides
                    ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1)
                    needed by alex-3.1.3-1.fc22.x86_64."
           Product: Fedora
           Version: rawhide
         Component: alex
          Severity: high
          Assignee: petersen at redhat.com
          Reporter: PTrenholme at gmail.com
        QA Contact: extras-qa at fedoraproject.org
                CC: haskell-devel at lists.fedoraproject.org,
                    petersen at redhat.com



Description of problem:

This is a package configuration problem, not a coding one. Here's a typical
output line from a "dns --best update" run:

Error: nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1)
needed by alex-3.1.3-1.fc22.x86_64.

(See the "Actual results" section for a few more lines.)

Version-Release number of selected component (if applicable):
3.0.5 trying to update to 3.1.3

How reproducible: Every time


Steps to Reproduce:
1.run (as su)  "dns --best update"
2.
3.

Actual results:
# dnf --best  update
Using metadata from Sat Feb 14 12:28:30 2015
Error: nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1)
needed by alex-3.1.3-1.fc22.x86_64.
nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1) needed by
cabal-install-1.18.0.5-1.fc22.x86_64.
nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1) needed by
ghc-GLURaw-1.4.0.1-1.fc22.x86_64.
nothing provides ghc-devel(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1)
needed by ghc-GLURaw-devel-1.4.0.1-1.fc22.x86_64.
nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1) needed by
ghc-GLUT-2.5.1.1-1.fc22.x86_64.
nothing provides ghc-devel(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1)
needed by ghc-GLUT-devel-2.5.1.1-1.fc22.x86_64.
nothing provides ghc(base-4.7.0.2-cb23b5265b6e147094c0cd9ac819acb1) needed by
ghc-HTTP-4000.2.10-1.fc22.x86_64.
.....
Expected results:
No errors

Additional info:
This is, of course, a problem for all the Glasgow Haskell programs in the
repository. I just picked Alex to "flag" because it's the first program listed.

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