Moved a bunch of outdated comments here, AFAIK all these issues are fixed.

The Haskell Platform installer for OSX uses GHC 7.0.4, which doesn't seem able to support the current version of git-annex.

Cabal throws a very cryptic error about not being able to use the proper base package.

I was able to install it by

  1. cloning the repo
  2. merging the ghc7.0 branch
  3. resolving merge conflicts in git-annex.cabal
  4. cabal install git-annex.cabal

(Note I also tried this with homebrew and had similar results)

You did the right thing, although just checking out the ghc-7.0 branch will avoid merge conflicts. I am trying to keep it fairly close to up-to-date.
Comment by http://joey.kitenet.net/ Wed Mar 28 19:18:58 2012

I got the following error message trying to install git-annex:

cabal: cannot configure git-annex-3.20120418. It requires base >=4.5 && <5
For the dependency on base >=4.5 && <5 there are these packages: base-4.5.0.0.
However none of them are available.
base-4.5.0.0 was excluded because of the top level dependency base -any

These are the steps I performed to make it work

  1. Download Ghc 7.4.
  2. Run sudo cabal install git-annex --bindir=$HOME/bin.
  3. Compilation of the Crypto-4.2.4 dependency failed since it's not updated to work with Ghc 7.4. You need to patch SHA2.hs (steps below).
  4. Run sudo cabal install git-annex --bindir=$HOME/bin a second time.

The steps I did to patch the SHA2.hs file in Crypto-4.2.4:

  1. cabal unpack crypto-4.2.4
  2. cd Crypto-4.2.4
  3. patch -p1 < crypto-4.2.4-ghc-7.4.patch
  4. sudo cabal install.

PS: I used this patchfile. Then I did the last step a third time.

If you're missing the sha256sum command with Homebrew, it's provided by coreutils. You have to change your $PATH before running cabal install git-annex.cabal:

PATH="$(brew --prefix coreutils)/libexec/gnubin:$PATH"
Last night I made it look in /opt/local/libexec/gnubin .. if there's another directory it could look in, let me know. I am reluctant to make it run the brew command directly.
Comment by http://joeyh.name/ Fri Jun 1 17:24:29 2012

$(brew --prefix) should, in most cases, be /usr/local. That's the recommended install location for homebrew.

I already had git installed and homebrew as my package manager - my install steps were as follows:

  1. brew install haskell-platform ossp-uuid md5sha1sum coreutils pcre
  2. PATH="$(brew --prefix coreutils)/libexec/gnubin:$PATH" cabal install git-annex
Comment by http://www.davidhaslem.com/ Tue Jun 19 04:41:27 2012

I try installing with brew because I already had brew setup in my machine, but all run ok but when I try to run cabal install git-annex I got an error with the hinotify-0.3.2 library complaining about a header file.

Full trace:

sudo cabal install git-annex
Resolving dependencies...
Configuring hinotify-0.3.2...
Building hinotify-0.3.2...
Preprocessing library hinotify-0.3.2...
INotify.hsc:35:25: error: sys/inotify.h: No such file or directory
INotify.hsc: In function ‘main’:
INotify.hsc:259: error: invalid use of undefined type ‘struct inotify_event’
INotify.hsc:260: error: invalid use of undefined type ‘struct inotify_event’
INotify.hsc:261: error: invalid use of undefined type ‘struct inotify_event’
INotify.hsc:262: error: invalid use of undefined type ‘struct inotify_event’
INotify.hsc:265: error: invalid use of undefined type ‘struct inotify_event’
INotify.hsc:266: error: invalid application of ‘sizeof’ to incomplete type ‘struct inotify_event’ 
compiling dist/build/System/INotify_hsc_make.c failed (exit code 1)
command was: /usr/bin/gcc -c dist/build/System/INotify_hsc_make.c -o dist/build/System/INotify_hsc_make.o -m64 -fno-stack-protector -m64 -D__GLASGOW_HASKELL__=704 -Ddarwin_BUILD_OS -Ddarwin_HOST_OS -Dx86_64_BUILD_ARCH -Dx86_64_HOST_ARCH -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/directory-1.1.0.2/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/unix-2.5.1.0/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/old-time-1.1.0.0/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/bytestring-0.9.2.1/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/base-4.5.0.0/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/include -Idist/build/autogen -include dist/build/autogen/cabal_macros.h -I/usr/local/Cellar/ghc/7.4.1/lib/ghc-7.4.1/include/
cabal: Error: some packages failed to install:
git-annex-3.20120624 depends on hinotify-0.3.2 which failed to install.
hinotify-0.3.2 failed during the building phase. The exception was:
ExitFailure 1

Anyone has an idea how can I solve this.

Thanks for the time!

Agustin

Hi Joey! I just comment that I could not install it but the issue is with the last version (the one you just release today, so no problem!! man on sunday?? you're awesome!!!) so I installed the previous one and no problem at all

Thanks for all the efford and if you need me to try os whatever, feel free to ask!

Thanks again

Agustin

@Agustin you should be able to work around that with: cabal install git-annex --flags=-Inotify

I've fixed it properly for the next release, it should only be using that library on Linux.

Comment by http://joeyh.name/ Mon Jun 25 15:38:44 2012

Hi @joey! Perfect!... I'll do that then!

Thanks for your time man!

in reply to comment 6: On my Mac (10.7.4) there's /usr/bin/shasum -a 256 <file> command that will produce the same output as sha256sum <file>.
…and another approach to the same problem: apparently git-annex also relies on the GNU coreutils (for instance, when doing git annex get ., cp complains about illegal option -- -). I do have the GNU coreutils installed with Homebrew, but they are all prefixed with g. So maybe you should try gsha256sum and gcp before sha256sum and cp, that seems like a more general solution.
@Damien, hmm, it should not be using any cp options, unless when it was built there was a cp in the path that supported some option like -p. Can you check with --debug what cp parameters it's trying to use?
Comment by http://joeyh.name/ Wed Jul 4 12:43:54 2012

git-annex will now fall back to slower pure Haskell hashing code if sha256sum, etc programs are not in PATH. I'd still recommend installing the coreutils, as they're probably faster.

(The shasum command seems to come from a perl library, so I have not tried to make git-annex use that one.)

Comment by http://joeyh.name/ Wed Jul 4 13:14:00 2012

I came across an issue when following the instructions here: http://git-annex.branchable.com/install/OSX/

I'm compiling the 'assistant' branch (522f568450a005ae81b24f63bb37e75320b51219).

The pre-compiled version of Haskell for OSX recommends the 32 bit installer, however git-annex compiles

Utility/libdiskfree.o Utility/libkqueue.o Utility/libmounts.o

as 64 bit. The 'make' command fails on linking 32- and 64-bit code.

So... I made a small change to the Makefile

CFLAGS=-Wall

becomes

CFLAGS=-Wall -m32

I don't know if there is an easy way to programmatically check for this, or even if you'd want to spend time doing it, but it might help someone else out.

https://gist.github.com/3167798

Comment by https://a-or-b.myopenid.com/ Tue Jul 24 03:26:45 2012
@a-or-b that issue is logged here subtle build issue on OSX 10.7 and Haskell Platform (if you have the 32bit version installed), you can use cabal to build and install git-annex and it will detect if its 32 or 64bit automatically.
The instructions say to use cabal for a reason -- it's more likely to work. But I have made the Makefile detect the mismatched GHC and C compiler and force the C compiler to 32 bit.
Comment by http://joeyh.name/ Tue Jul 24 15:03:49 2012
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