# Ticket #218 (closed defect: fixed)

Opened 4 years ago

## Firefox dislikes Haddock master index on Windows

Reported by: MtnViewMark major 2.9.4

### Description

If you edit the cabal configuration file and add the lines

then cabal-install generates a master package index every time it installs a new package. Internet Explorer is perfectly happy with this page, and the W3C validator passes it, but Firefox dislikes it.

Specifically, Firefox won't follow any of the links, complaining that "the transfer protocol is not registered". Basically, all of the links are absolute paths that begin "C:\Documents and Settings\...", and Firefox apparently thinks that "C:" is a transfer protocol specification, just like "http:" or "mailto:". (I'm using Firefox 3.5 for Windows, in case it makes a difference.)

Note that this bug does not affect the index of packages supplied with HP, which uses relative paths. This index page works with every browser I've tried. It's the absolute paths in the cabal-install package index that are failing.

Since the document index is always in the folder above the individual package documentation, I would suggest that making Haddock always use relative paths would fix this. (The alternative is to prefix all absolute paths with "file:", which seems to make Firefox happy.)

## Change History

### Changed 4 years ago by SimonHengel

If I understand correctly, this is a Cabal/cabal-install issue. Haddock can read interface files with e.g.

--read-interface=<base-url>,<path-to-haddock-interface-file>


where base-url has to be a a valid URL. On Windows, Cabal passes something like C:\foo\bar\baz as base-url which is not a valid URL.

### Changed 4 years ago by SimonHengel

I opened a corresponding ticket on Cabal's issue tracker: https://github.com/haskell/cabal/issues/1064

I'll still investigated whether we can workaround this in Haddock.

### Changed 3 years ago by feuerbach

• status changed from new to closed
• resolution set to fixed

This has been fixed in Cabal: https://github.com/haskell/cabal/pull/1407

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