reorg, moving MacPorts to a separate page

doc/install/OSX.mdwn

@@ -31,25 +31,5 @@ git-annex is now [[available in Homebrew|Homebrew]]!
 
 ## using MacPorts
 
-Install the Haskell Platform from [[http://hackage.haskell.org/platform/mac.html]].
-The version provided by Macports is too old to work with current versions of git-annex.
-Then execute
-
-<pre>
-sudo port install git-core ossp-uuid md5sha1sum coreutils gnutls libxml2 libgsasl pkgconfig
-sudo cabal update
-PATH=$HOME/bin:$PATH
-cabal install c2hs git-annex --bindir=$HOME/bin
-</pre>
-
-## PATH setup
-
-Do not forget to add to your PATH variable your ~/bin folder. In your .bashrc, for example:
-<pre>
-PATH=$HOME/bin:$PATH
-</pre>
-
-See also:
-
-* [[forum/OSX__39__s_haskell-platform_statically_links_things]]
-* [[forum/OSX__39__s_default_sshd_behaviour_has_limited_paths_set]]
+git-annex is not available in MacPorts, but can be built from source using
+MacPorts tools. See [[MacPorts]]

doc/install/OSX/MacPorts.mdwn

@@ -0,0 +1,27 @@
+This is not a recommended way to install git-annex. Use [[HomeBrew]] or the
+prebuilt app bundle instead.
+
+But if you really want to use MacPorts:
+
+Install the Haskell Platform from [[http://hackage.haskell.org/platform/mac.html]].
+The version provided by Macports is too old to work with current versions of git-annex.
+Then execute
+
+<pre>
+sudo port install git-core ossp-uuid md5sha1sum coreutils gnutls libxml2 libgsasl pkgconfig
+sudo cabal update
+PATH=$HOME/bin:$PATH
+cabal install c2hs git-annex --bindir=$HOME/bin
+</pre>
+
+## PATH setup
+
+Do not forget to add to your PATH variable your ~/bin folder. In your .bashrc, for example:
+<pre>
+PATH=$HOME/bin:$PATH
+</pre>
+
+See also:
+
+* [[forum/OSX__39__s_haskell-platform_statically_links_things]]
+* [[forum/OSX__39__s_default_sshd_behaviour_has_limited_paths_set]]