[Haskell-cafe] Cabal: other-modules necessary?

[Volker Wysk]

Am Freitag, dem 16.09.2022 um 10:53 +0200 schrieb Nicolas Trangez:
> Hello Volker,
> 
> Compilation will, indeed, succeed. However, distribution won't: if the
> module is not listed in `Other-Modules` (or any of the other sections),
> it won't be included in the tarball generated when you invoke `cabal
> sdist`, i.e., the source archive uploaded to Hackage.

That's fine im my case. I don't want to distribute that.

Regarding my other question (Can that warning message be turned off?), I've
found out. It can be turned off with this line in the cabal.project file:

Wmissing-home-modules: False


Regards,
Volker


> Hence, if someone then tries to download and build your package from
> Hackage, this will fail, since some module source files are missing.
> 
> There may be other effects of not listing some module, though above is
> the one I'm aware of.
> 
> Cheers,
> 
> Nicolas
> 
> On Fri, 2022-09-16 at 10:47 +0200, Volker Wysk wrote:
> > Hi
> > 
> > The cabal user guide says (in section 6.2.12): "Every module in the
> > package
> > must be listed in one of other-modules, library:exposed-modules or
> > executable:main-is fields."
> > 
> > However, I only get a warning message, when I comment out the other-
> > modules
> > field in my .cabal file. The program compiles. This is the message:
> > 
> > <no location info>: warning: [-Wmissing-home-modules]
> >     These modules are needed for compilation but not listed in your
> > .cabal 
> >     file's other-modules: 
> >         Hsskripte Sicherung SicherungAktionen Text Wahl Zeit
> > 
> > Is it really necessary to specify all the imported modules? If so,
> > why does
> > the program compile? Can that warning message be turned off?
> > 
> > Apart from that, I'm happy with cabal.   :-)
> > 
> > Cheers,
> > Volker
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