user package blocks standard ones

Please, what is the matter with the packages in  ghc-6.0.1  ?

  (ghc-6.0.1 
   installed from RPM on  Red Hat Linux release 7.3 (Valhalla),
   i-386 unknown
  )

It does not find the library items, say  List.sort,
when it `makes' under the  user package  in the user project  
importing standard library.
This package is called  docon,  and it is for a contrived project 
of a single small module.
Similarly,                      ghci -package-conf docon.conf
reports
  Loading package docon ... linking ...
  /home/mechvel/test/export/HSdocon.o: unknown symbol `__stginit_List_'
  ghc-6.0.1: panic! (the `impossible' happened, GHC version 6.0.1):
        can't load package `docon'
  Please report it as a compiler bug to glasgow-haskell-bugs@xxxxxxxxxxx,
  or http://sourceforge.net/projects/ghc/.

Either it loads the packages of GHC itself, or, if it deals with 
the user package, the packages of GHC are somehow blocked out.

When the user project does not  import List  and the such, then
                      
                ghc --make -package-conf docon.conf   
works 
but             ghci       -package-conf docon.conf

still does not (probably, it still needs to load some ghc packages).
The user package is 
         Package {name            = "docon",
                  import_dirs     = [$e], 
                  source_dirs     = [],     
                  library_dirs    = [$e], 
                  hs_libraries    = ["HSdocon"],
                  extra_libraries = [],
                  include_dirs    = [],
                  c_includes      = [],
                  package_deps    = [],
                  extra_ghc_opts  = [],
                  extra_cc_opts   = [],
                  extra_ld_opts   = [] 
                 }
, $e is the the path to user package .hi, .o, and library directory.

I struggled with it for two days.
Then, occasionally, tried to set   package_deps = ["data"]

, even though my contrived user package does not use "data".
And it started to work, to load everything needed!

Then I try                 package_deps = ["base"]

And here                   ghci -package-conf docon.conf
reports again the `panic'. 

Here follows the precise data.

The file  Head.hs  in the `root' directory  $(s)  contains

    module Head where  import List (sort)
                       f = sort [1,2]  :: [Int] 
 
The file  Makefile  in the same directory is for creating the 
package and `making' the project. So that the command 
                                                      make docon
does the following in succession.

* creates a directory  $(e) = $(s)/export
* makes a project by
                  $(ghc) $(HCFlags) --make Head  -package-name docon

* creates the libraries   $(e)/libHSdocon.a  $(e)/HSdocon.o
  with  ar  and  ld
* creates a package  docon  referring to these libraries:
          echo $(pack) | ghc-pkg -f $(s)/docon.conf -u
,
where  $(pack)  is a string for the package which Makefile sets 
earlier.

The command   make clear   is for un-doing of all this.

Here is the precise  Makefile:

----------------------------------------------------------------
ghc = /usr/bin/ghc
#                           edit these two  ***
s   = /home/mechvel/test

e       = $(s)/export
RANLIB  = ar -s
HCFlags = -odir $(e) -hidir $(e)

pack = Package {name            = "\"docon\"",     \
                import_dirs     = ["\"$(e)\""],    \
                source_dirs     = [],              \
                library_dirs    = ["\"$(e)\""],    \
                hs_libraries    = ["\"HSdocon\""], \
                extra_libraries = [], \
                include_dirs    = [], \
                c_includes      = [], \
                package_deps    = [], \
                extra_ghc_opts  = [], \
                extra_cc_opts   = [], \
                extra_ld_opts   = [] }

obj:
        if [ ! -d $(e) ]; then mkdir $(e); fi
        $(ghc) $(HCFlags) --make Head  -package-name docon

docon: obj
        rm -f  $(e)/libHSdocon.a $(e)/HSdocon.o
        ar -qc $(e)/libHSdocon.a $(wildcard $(e)/*.o)
        $(RANLIB)  $(e)/libHSdocon.a
        ld -r -x --whole-archive $(e)/libHSdocon.a -o $(e)/HSdocon.o
        ghc-pkg -f $(s)/docon.conf -l
        echo $(pack) | ghc-pkg -f $(s)/docon.conf -u
        ghc-pkg -f $(s)/docon.conf -l

clear:
        ghc-pkg -f $(s)/docon.conf -r docon
        rm -f  $(s)/docon.conf.old
        rm -rf $(e)
        rm -f $(s)/log
----------------------------------------------------------------
  

To exclude the List library,   comment out the line  `import ..'
and replace the line  `f = ...'  with  `f = True'.



Question on  ghc-pkg -g
=======================

User guide for packages does not explain this precisely.
I suspect that       
                                         ghc-pkg -g
may help to replace the messy line
       
    ld -r -x --whole-archive $(e)/libHSdocon.a -o $(e)/HSdocon.o

in the above Makefile, but cannot guess how to use here this  
ghc-pkg -g.
Is it clear from the guide paragraph 
                           4.10.4  ... `--auto-ghci-libs, -g'  
?


Answer, please, to  mechvel@xxxxxxxx

With kind regards,

-----------------
Serge Mechveliani
mechvel@xxxxxxxx