[Haskell-cafe] how to expand ~ in a filepath

[Brandon Allbery]

There's also
https://github.com/xmonad/xmonad-contrib/blob/master/XMonad/Prelude.hs#L135-L156
although it also does a few other things.

On Mon, Jul 21, 2025 at 7:57 AM Tristan Cacqueray via Haskell-Cafe <
haskell-cafe at haskell.org> wrote:

>
> Hello, unfortunately there is no "expandHomePath" or "realpath" helpers
> in the standard libraries. Searching for "FilePath -> IO FilePath" in
> hoogle shows an implementation in the hledger project:
>
> https://hackage-content.haskell.org/package/hledger-lib-1.43.2/docs/Hledger-Utils-IO.html#v:expandHomePath
>
> … which check if the path begins with "~/", and replace that with the
> output of "getHomeDirectory"
>
> -Tristan
>
> On Mon, Jul 21, 2025 at 07:19 PICCA Frederic-Emmanuel wrote:
> > Hello, I am trying to open and read the content of this kind of filepath.
> >
> > ~/debian/changelog
> >
> > So is there a prefered way to expand the ~ into the real $HOME.
> >
> > thanks for your help
> >
> > Frédéric
> >
> >
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-- 
brandon s allbery kf8nh
allbery.b at gmail.com
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