Below I get a warning when I recompile everything, but no warning when I only recompile the Main module (that contains the unused import). In fact Main.hi changes.
Cheers Christian
Compiling GUI.ConvertDevToAbstractGraph ( GUI/ConvertDevToAbstractGraph.hs, GUI/ConvertDevToAbstractGraph.o )
Compiling Main ( GUI/hetdg.hs, GUI/hetdg.o )
GUI/hetdg.hs:1:
Warning: Module `Data.IORef' is imported, but nothing from it is used
(except perhaps to re-export instances visible in `Data.IORef')
ghc: linking ...
[EMAIL PROTECTED]:~/haskell/HetCATS> ll GUI/Main.hi
[EMAIL PROTECTED]:~/haskell/HetCATS> ll GUI/Main.hi
-rw-r--r-- 1 maeder wimi 5272 2003-03-21 16:47 GUI/Main.hi
[EMAIL PROTECTED]:~/haskell/HetCATS> rm GUI/Main.hi
[omitted the list of Skipping after ghc --make -fglasgow-exts -fwarn-unused-imports ...]
Skipping GUI.ConvertDevToAbstractGraph ( GUI/ConvertDevToAbstractGraph.hs, GUI/ConvertDevToAbstractGraph.o )
Compiling Main ( GUI/hetdg.hs, GUI/hetdg.o )
ghc: linking ...
[EMAIL PROTECTED]:~/haskell/HetCATS> ll GUI/Main.hi
-rw-r--r-- 1 maeder wimi 5840 2003-03-21 16:48 GUI/Main.hi
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