In Loading source files it states that the search path for finding source files is specified with the -i option :
ghci -idir1:...:dirn
Does this mean that when one performs :
:load test.hs
then ghci looks in the directories above for test.hs? I saw the response at
Problem Specifying Source Directory to GHC but I am still not clear about this.
For example in Windows XP I put test.hs in :
C:\Documents and Settings\winuser\My Documents
and then ran :
ghci -iC:\Documents and Settings\winuser\My Documents
However upon doing :load test.hs
, ghci complained about not being able to find the file.
[EDIT 1]
I want to avoid using :cd
because it unloads all loaded modules, which prevents me from loading files from multiple locations
[EDIT 2 : response to jozefg]
--C:\A\A.hs
module A where
myaddA::Int->Int->Int
myaddA x y = x+y
--C:\B\B.hs
module B where
myaddB::Int->Int->Int
myaddB x y = x+y
Then I can do the following :
Prelude> :cd C:\A
Prelude> :load A
[1 of 1] Compiling A ( A.hs, interpreted )
Ok, modules loaded: A.
*A> myaddA 2 3
5
*A> :cd C:\B
Warning: changing directory causes all loaded modules to be unloaded,
because the search path has changed.
Prelude> :load B
[1 of 1] Compiling B ( B.hs, interpreted )
Ok, modules loaded: B.
*B> myaddB 3 4
7
However I haven't found a way to make modules A and B simultaneously available when the modules are stored in files in different locations
[EDIT 3 : response to jozefg]
>ls
temp temp2
>more temp/A.hs
module A where
addA = (+)
>more temp2/B.hs
module B where
addB = (+)
>cd temp
>ghci -i../temp2
GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> import A B
<interactive>:1:10: parse error on input `B'
[EDIT 4 : response to jozefg]
>ls
temp temp2
>more temp/A.hs
module A where
addA = (+)
>more temp2/B.hs
module B where
addB = (+)
>cd temp
>ghci -i../temp2
GHCi, version 7.6.3: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Prelude> import A
<no location info>:
Could not find module `A'
It is not a module in the current program, or in any known package.
Prelude> import B
<no location info>:
Could not find module `B'
It is not a module in the current program, or in any known package.