You have unlinked kegs in your Cellar / libiconv

[oschrenk]

brew doctor warns me about an unlinked keg libiconv. I tried unlinking it but it gives me the error No available formula for libiconv. Installing it doesn't work as it is distributed with OSX.

Can anyone tell me what this means?

PS
I stumbled upon the problem after I tried upgrading subversion, which failed because of unlinked pkg-config. Running brew doctor listed many warnings for unlinked kegs, which all could be solved by unlinking and linking them again. Only libiconv is stubborn.

[mxcl]

So you sure you did: brew unlink libiconv? Because the error message you specified is impossible for that command. Why are you unlinking anyway? You should be linking. It says they are unlinked.

[oschrenk]

Yes, I'm sure.

Both link and unlink give me

 Error: No available formula for libiconv 

I was unlinking the kegs first as homebrew threw erors at me that the path it tried to create symlinks at already existed, so I "re"-linked them.

Here is the output of brew doctor

Warning: You have unlinked kegs in your Cellar
Leaving kegs unlinked can lead to build-trouble and cause brews that depend on
those kegs to fail to run properly once built.

    libiconv

Warning: Your Xcode is configured with an invalid path.
You should change it to the correct path. Please note that there is no correct
path at this time if you have *only* installed the Command Line Tools for Xcode.
If your Xcode is pre-4.3 or you installed the whole of Xcode 4.3 then one of
these is (probably) what you want:

    sudo xcode-select -switch /Developer
    sudo xcode-select -switch /Applications/Xcode.app/Contents/Developer

My env:
sw_vers | grep 'ProductVersion:' | grep -o '[0-9]*\.[0-9]*\.[0-9]*' = 10.7.3
brew --version = 0.9

[oschrenk]

Just saw your commit 4571077 and updated. I still get the warning from doctor and the error for link and unlink

[mxcl]

brew update && brew link libiconv

[mxcl]

Please specify the exact command you are typing. Please provide the output with --debug.

[oschrenk]

$ brew update --debug
Already up-to-date.

$ brew log -1 --format="%H"
37a3f7ce4f287fbf6ec9e0fbe10955d029c98f5d

$ brew link --debug libiconv
Error: No available formula for libiconv 
/usr/local/Library/Homebrew/formula.rb:362:in `factory'
/usr/local/Library/Homebrew/extend/ARGV.rb:39:in `kegs'
/usr/local/Library/Homebrew/extend/ARGV.rb:21:in `collect'
/usr/local/Library/Homebrew/extend/ARGV.rb:21:in `kegs'
/usr/local/Library/Homebrew/cmd/link.rb:12:in `link'
/usr/local/bin/brew:83:in `send'
/usr/local/bin/brew:83

$ brew link --debug libiconv
Error: No available formula for libiconv 
/usr/local/Library/Homebrew/formula.rb:362:in `factory'
/usr/local/Library/Homebrew/extend/ARGV.rb:39:in `kegs'
/usr/local/Library/Homebrew/extend/ARGV.rb:21:in `collect'
/usr/local/Library/Homebrew/extend/ARGV.rb:21:in `kegs'
/usr/local/Library/Homebrew/cmd/link.rb:12:in `link'
/usr/local/bin/brew:83:in `send'
/usr/local/bin/brew:83

$ brew install --debug libiconv
Error: No available formula for libiconv
Apple distributes libiconv with OS X, you can find it in /usr/lib.
Some build scripts fail to detect it correctly, please check existing
formulae for solutions.
/usr/local/Library/Homebrew/cmd/install.rb:11:in `install'
/usr/local/Library/Homebrew/cmd/install.rb:9:in `each'
/usr/local/Library/Homebrew/cmd/install.rb:9:in `install'
/usr/local/bin/brew:83:in `send'
/usr/local/bin/brew:83

[mxcl]

ls -la /usr/local/Cellar/libiconv

[oschrenk]

$ ls -la /usr/local/Cellar/libiconv
total 0
drwxr-xr-x+  4 Oliver  staff   136 21 Sep 12:31 .
drwxr-xr-x+ 85 Oliver  staff  2890 19 Mär 11:49 ..
drwxr-xr-x+ 10 Oliver  staff   340 22 Aug  2011 1.13.1
drwxr-xr-x+ 10 Oliver  staff   340 21 Sep 12:32 1.14

[mxcl]

K, I see the problem, thanks for the report, fix coming!

Sadly because the formula was deleted, your only option is to delete the 1.13.1 version manually from the Cellar. Apologies, I know this is dumb.

[mxcl]

@adamv, @MikeMcQuaid, @jacknagel, @Sharpie, @mistydemeo

This situation shows how naive Homebrew is about this sort of thing. We need to stop relying on the formula itself as the definition of keg state.

[oschrenk]

No need to apologize.

Thanks for homebrew!