Failed to load interface for `Hat.PreludeBasic'

This appears to be a Hat installation problem.  Running the
command
"hmake -v -hat Test" yields the results:

------------------------------------------------------------
------------------------
hat-trans   DoublyLinked.hs
Wrote Hat/DoublyLinked.hs
/usr/bin/haskell-compiler   -v    -c -package hat -o
Hat/DoublyLinked.o Hat/Doub lyLinked.hs
Glasgow Haskell Compiler, Version 6.4.1, for Haskell 98,
compiled by
GHC version  6.4.1
Using package config file: /usr/lib/ghc-6.4.1/package.conf
Hsc static flags: -static -funregisterised
*** Checking old interface for Hat.DoublyLinked:
*** Parser:
*** Renamer/typechecker:

Hat/DoublyLinked.hs:11:0:
    Failed to load interface for `Hat.PreludeBasic':
        Could not find module `Hat.PreludeBasic':
          locations searched:
            Hat/PreludeBasic.hi
            Hat/PreludeBasic.hi-boot
*** Deleting temp files
Deleting: /tmp/ghc7184.hc
Warning: deleting non-existent /tmp/ghc7184.hc
------------------------------------------------------------
-------------------------
I have explicitly enabled hat via ghc-pkg -l lists
"hat" not in
parenthesis, so I think the package is enabled.

------------------------------------------------------------
----
When apt-getting hat for ubuntu 6.06, note the troubling
output of the
package manager
"ghc-pkg: cannot find package hat" - this was
before the hat package
was enabled -- could this be the problem?  If so, should I
more
properly ask the package maintainers about this?

Setting up hmake (3.10-1.1) ...

Setting up hat (2.04-0ubuntu2) ...
Setting up hat-ghc6 (2.04-0ubuntu2) ...
ghc-pkg: cannot find package hat
Reading package info from stdin ... done.
Saving old package config file... done.
Writing new package config file... done.
------------------------------------------------------------
------------------------

Possibly related: "[Hat] hat installation problem"
http://www.haskell.org/pipermail/hat/2006-February
/000255.html

------------------------------------------------------------
-------------------------

Any idea what the problem could be?
CC me in the reply please, I don't subscribe.
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"David Morse" <dcmorsegmail.com> wrote:

> /usr/bin/haskell-compiler   -v    -c -package hat -o
>     Hat/DoublyLinked.o Hat/DoublyLinked.hs

I wonder how /usr/bin/haskell-compiler differs from a
straight ghc.

> Hat/DoublyLinked.hs:11:0:
>     Failed to load interface for `Hat.PreludeBasic':
>         Could not find module `Hat.PreludeBasic':
>           locations searched:
>             Hat/PreludeBasic.hi
>             Hat/PreludeBasic.hi-boot

It is clear that this ghc is not looking in the package
directories, so
it is no wonder it does not find the Hat files.

> I have explicitly enabled hat via ghc-pkg -l lists
> "hat" not in parenthesis, so I think the
package is enabled.

Sounds OK.

> "ghc-pkg: cannot find package hat" - this was
before the hat package
> was enabled -- could this be the problem?

Possibly.  But I think the installer does try to remove any
existing Hat
package before installing a new one, which may be the cause
of the
warning, and therefore nothing to worry about.

> If so, should I more
> properly ask the package maintainers about this?

You could try asking them if they have had any positive
feedback that
Hat definitely works for someone else on the same platform.

Regards,
    Malcolm
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