Homebrew is installing wxmac in bottle form (a pre-compiled binary of wxmac). To build from source, add the `--build-from-source` flag when calling `brew install`:

    $ brew install --build-from-source wxmac

To rebuild all installed FORMULAE from source:

&lt;pre&gt;
$ brew list | xargs brew reinstall --build-from-source
&lt;/pre&gt;


I want to return a HTTP 400 response from my django view function if the request GET data is invalid and cannot be parsed.

How do I do this? There does not seem to be a corresponding `Exception` class like there is for 404:

    raise Http404

How to return HTTP 400 response in Django?

I want to have the whole set of animation to play forever. When the last photo fades off, I want the first one to appear again an so on. What I did (and I dont like) is set the page to reload at the end of the last photo fade out. Is there any other way to do this using css???

    &lt;html&gt;
    	&lt;head&gt;
    		&lt;style&gt;
    .content{
    	height: 400px !important;
    	/*margin: auto !important;*/
    	overflow: hidden !important;
    	width: 780px !important;
    }

    .imgholder{
    	height: 400px;
    	margin: auto;
    	width: 780px;
    }

    .photo1{
    	opacity: 0;
    	        animation: fadeinphoto 7s 1; 
    	   -moz-animation: fadeinphoto 7s 1; 
    	-webkit-animation: fadeinphoto 7s 1; 
    	     -o-animation: fadeinphoto 7s 1; 
    	float: left;
    	position: relative;
    	top: 0px;
    	z-index: 1;
    }

    .photo2 {
    	opacity: 0;
    	        animation: fadeinphoto 7s 5s 1;
    	   -moz-animation: fadeinphoto 7s 5s 1;
    	-webkit-animation: fadeinphoto 7s 5s 1;
    	     -o-animation: fadeinphoto 7s 5s 1;
    	float: left;
    	position: relative;
    	top: -400px;
    	z-index: 1;
    }
    .photo3 {
    	opacity:0;
    	        animation: fadeinphoto 7s 10s 1;
    	   -moz-animation: fadeinphoto 7s 10s 1;
    	-webkit-animation: fadeinphoto 7s 10s 1;
    	     -o-animation: fadeinphoto 7s 10s 1;
    	float: left;
    	position: relative;
    	top: -800px;
    	z-index: 1;
    }

    .photo4 {
    	opacity: 0;
    	animation: fadeinphoto 7s 15s 1;
    	-moz-animation: fadeinphoto 7s 15s 1;
    	-webkit-animation: fadeinphoto 7s 15s 1;
    	-o-animation: fadeinphoto 7s 15s 1;
    	float: left;
    	position: relative;
    	top: -1200px;
    	z-index: 1;
    }

    .photo5 {
    	opacity: 0;
    	        animation: fadeinphoto 7s 20s 1;
    	   -moz-animation: fadeinphoto 7s 20s 1;
    	-webkit-animation: fadeinphoto 7s 20s 1;
    	     -o-animation: fadeinphoto 7s 20s 1;
    	float: left;
    	position: relative;
    	top: -1600px;
    	z-index: 1;
    }

    /* Animation Keyframes*/
    @keyframes fadeinphoto {
    	0% { opacity: 0; }
    	50% { opacity: 1; }
    	100% { opacity: 0; }
    }

    @-moz-keyframes fadeinphoto {
    	0% { opacity: 0; }
    	50% { opacity: 1; }
    	A100% { opacity: 0; }
    }

    @-webkit-keyframes fadeinphoto {
    	0% { opacity: 0; }
    	50% { opacity: 1; }
    	100% { opacity: 0; }
    }

    @-o-keyframes fadeinphoto {
    	0% { opacity: 0; }
    	50% { opacity: 1; }
    	100% { opacity: 0; }
    }
    		&lt;/style&gt;
    		&lt;body&gt;
    			&lt;div class=&quot;content&quot;&gt;
   					&lt;div class=&quot;imgholder&quot;&gt;
    					&lt;img src=&quot;images/image1.jpg&quot; width=&quot;780&quot; height=&quot;400&quot; class=&quot;photo1&quot;/&gt;
    					&lt;img src=&quot;images/image2.JPG&quot; width=&quot;780&quot; height=&quot;400&quot; class=&quot;photo2&quot;/&gt;
    					&lt;img src=&quot;images/image3.JPG&quot; width=&quot;780&quot; height=&quot;400&quot; class=&quot;photo3&quot;/&gt;
    					&lt;img src=&quot;images/image4.jpg&quot; width=&quot;780&quot; height=&quot;400&quot; class=&quot;photo4&quot;/&gt;
    					&lt;img src=&quot;images/image5.jpg&quot; width=&quot;780&quot; height=&quot;400&quot; class=&quot;photo5&quot;/&gt;
    				&lt;/div&gt;
    			&lt;/div&gt;
    		&lt;/body&gt;
    	&lt;/head&gt;
    &lt;/html&gt;



How to have css3 animation to loop forever

I&#39;m trying to install wxWidgets on Mac OS X 10.9. It&#39;s already installed, but I&#39;m having the problem described [here][1]. Someone suggested to add `ENV.append_to_cflags &quot;-stdlib=libc++&quot;`. I did, but I&#39;m not able to recompile the code.

    $ brew install wxmac
    Warning: wxmac-3.0.0 already installed
    $ brew edit wxmac
    =&gt; ok, modifications done, now I want to recompile and reinstall
    $ brew uninstall wxmac
    Uninstalling /usr/local/Cellar/wxmac/3.0.0...
    $ brew install wxmac
    ==&gt; Downloading https://downloads.sf.net/project/machomebrew/Bottles/wxmac-    3.0.0.mavericks.bottle.2.tar.gz
    Already downloaded: /Library/Caches/Homebrew/wxmac-3.0.0.mavericks.bottle.2.tar.gz
    ==&gt; Pouring wxmac-3.0.0.mavericks.bottle.2.tar.gz
    &#127866;  /usr/local/Cellar/wxmac/3.0.0: 775 files, 41M

How can I force homebrew to recompile?

  [1]: https://github.com/Homebrew/homebrew/issues/23666

How can I force homebrew to recompile?

I'm trying to install wxWidgets on Mac OS X 10.9. It's already installed, but I'm having the problem described <a href="https://github.com/Homebrew/homebrew/issues/23666" target="_blank" rel="noopener noreferrer">here</a>. Someone suggested to add <code>ENV.append_to_cflags "-stdlib=libc++"</code>. I did, but I'm not able to recompile the code.
<pre><code class="hljs language-bash">$ brew install wxmac
Warning: wxmac-3.0.0 already installed
$ brew edit wxmac
=> ok, modifications done, now I want to recompile and reinstall
$ brew uninstall wxmac
Uninstalling /usr/local/Cellar/wxmac/3.0.0...
$ brew install wxmac
==> Downloading https://downloads.sf.net/project/machomebrew/Bottles/wxmac- 3.0.0.mavericks.bottle.2.tar.gz
Already downloaded: /Library/Caches/Homebrew/wxmac-3.0.0.mavericks.bottle.2.tar.gz
==> Pouring wxmac-3.0.0.mavericks.bottle.2.tar.gz
🍺 /usr/local/Cellar/wxmac/3.0.0: 775 files, 41M
</code></pre>
How can I force homebrew to recompile?

I installed `rbenv` via Homebrew on an OS X 10.9.3 MacBook Pro:

    brew update
    brew upgrade rbenv ruby-build

According to `rbenv install --list` on my laptop `Ruby 2.1.0-dev` is the latest.

rbenv install --list does not list version 2.1.2

Attempting to install the  zlib-devel on mac os x mavericks with homebrew doesn&#39;t work:

    brew install zlib-devel
    Error: No available formula for zlib-devel 
    Searching taps...

This install 

    brew install zlib

works fine though.

brew install zlib-devel on Mac OS X Mavericks

I recently upgrade to the 10.10 Yosemite beta, but I&#39;m having trouble getting Nokogiri installed. I&#39;m using RVM and Ruby 1.9.3. I&#39;ve also followed the steps [here](https://gist.github.com/vparihar01/5856524) and tried following the instructions on Nokogiri&#39;s homepage. 

I&#39;ve installed libxml2 (2.9.1) and libxslt (1.1.28) via homebrew, and have tried using the command line tools from both my Xcode 5 install and Xcode 6 beta. 

    gem install nokogiri -v &#39;1.5.5&#39;
    Building native extensions.  This could take a while...
    ERROR:  Error installing nokogiri:
    	ERROR: Failed to build gem native extension.
    
            /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/bin/ruby extconf.rb
    checking for libxml/parser.h... *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of
    necessary libraries and/or headers.  Check the mkmf.log file for more
    details.  You may need configuration options.
    
    Provided configuration options:
    	--with-opt-dir
    	--with-opt-include
    	--without-opt-include=${opt-dir}/include
    	--with-opt-lib
    	--without-opt-lib=${opt-dir}/lib
    	--with-make-prog
    	--without-make-prog
    	--srcdir=.
    	--curdir
    	--ruby=/Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/bin/ruby
    	--with-zlib-dir
    	--without-zlib-dir
    	--with-zlib-include
    	--without-zlib-include=${zlib-dir}/include
    	--with-zlib-lib
    	--without-zlib-lib=${zlib-dir}/lib
    	--with-iconv-dir
    	--without-iconv-dir
    	--with-iconv-include
    	--without-iconv-include=${iconv-dir}/include
    	--with-iconv-lib
    	--without-iconv-lib=${iconv-dir}/lib
    	--with-xml2-dir
    	--without-xml2-dir
    	--with-xml2-include
    	--without-xml2-include=${xml2-dir}/include
    	--with-xml2-lib
    	--without-xml2-lib=${xml2-dir}/lib
    	--with-xslt-dir
    	--without-xslt-dir
    	--with-xslt-include
    	--without-xslt-include=${xslt-dir}/include
    	--with-xslt-lib
    	--without-xslt-lib=${xslt-dir}/lib
    	--with-libxslt-config
    	--without-libxslt-config
    	--with-pkg-config
    	--without-pkg-config
    	--with-libxml-2.0-config
    	--without-libxml-2.0-config
    	--with-libiconv-config
    	--without-libiconv-config
    /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:381:in `try_do&#39;: The compiler failed to generate an executable file. (RuntimeError)
    You have to install development tools first.
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:506:in `try_cpp&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:970:in `block in find_header&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:254:in `open&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:254:in `open&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:280:in `postpone&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for&#39;
    	from /Users/grantdavis/.rvm/rubies/ruby-1.9.3-p362/lib/ruby/1.9.1/mkmf.rb:969:in `find_header&#39;
    	from extconf.rb:114:in `&lt;main&gt;&#39;

Anyone have an idea on how to fix these install errors?

**EDIT 6/10/14:** After trying for a couple days to get Nokogiri installed on OSX 10.10, I ended up abandoning the task and restored 10.9 on my machine. Several libraries and bundles need to be updated in order to work in the 10.10 environment.

Installing Nokogiri on OSX 10.10 Yosemite

After installing Yosemite, I was unable to run brew or ruby. 

I was getting this error on brew update:

    /usr/local/bin/brew: /usr/local/Library/brew.rb: /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby: bad interpreter: No such file or directory
    /usr/local/bin/brew: line 23: /usr/local/Library/brew.rb: Undefined error: 0

getting this error on irb:

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:245:in mkdir&#39;: Permission denied - /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-14 (Errno::EACCES) from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:245:infu_mkdir&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:219:in block (2 levels) in mkdir_p&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:217:inreverse_each&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:217:in block in mkdir_p&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:203:ineach&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/fileutils.rb:203:in mkdir_p&#39; from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:210:inwrite_gem_make_out&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:132:in build_error&#39; from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:171:inrescue in build_extension&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:156:in build_extension&#39; from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:198:inblock in build_extensions&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:in each&#39; from /Library/Ruby/Site/2.0.0/rubygems/ext/builder.rb:195:inbuild_extensions&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1436:in block in build_extensions&#39; from /Library/Ruby/Site/2.0.0/rubygems/user_interaction.rb:45:inuse_ui&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:1434:in build_extensions&#39; from /Library/Ruby/Site/2.0.0/rubygems/stub_specification.rb:60:inbuild_extensions&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/basic_specification.rb:56:in contains_requirable_file?&#39; from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:925:inblock in find_inactive_by_path&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:in each&#39; from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:infind&#39;
    from /Library/Ruby/Site/2.0.0/rubygems/specification.rb:924:in find_inactive_by_path&#39; from /Library/Ruby/Site/2.0.0/rubygems.rb:185:intry_activate&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:150:in block in search_file&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:158:inblock in each_localized_path&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:167:in each_sublocale&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:157:ineach_localized_path&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:145:in search_file&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:124:infind&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:108:in load&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/locale.rb:32:ininitialize&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/init.rb:114:in new&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/init.rb:114:ininit_config&#39;
    from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb/init.rb:16:in setup&#39; from /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/lib/ruby/2.0.0/irb.rb:380:instart&#39;
    from /usr/bin/irb:12:in `&#39;



How to get Ruby / Homebrew / RVM to work on Yosemite?

##Upon using a new terminal session in OS X, `nvm` forgets the node version and defaults to nothing:

`$ nvm ls`:

             .nvm
         v0.11.12
         v0.11.13

I have to keep hitting `nvm use v.0.11.13` in every session:

             .nvm
         v0.11.12
    -&gt;   v0.11.13

I&#39;ve tried both the `brew` install, as well as the official installation script.

My **`.profile`** for the brew version:

    #nvm
    export NVM_DIR=~/.nvm
    source $(brew --prefix nvm)/nvm.sh

And for the install.sh script:

`$ curl https://raw.githubusercontent.com/creationix/nvm/v0.10.0/install.sh | bash`

    #nvm
    export NVM_DIR=&quot;/Users/farhad/.nvm&quot;
    [ -s &quot;$NVM_DIR/nvm.sh&quot; ] &amp;&amp; . &quot;$NVM_DIR/nvm.sh&quot;  # This loads nvm

##Any clue to what I&#39;m doing wrong?

Content Type	Original Author	Original Content on Stackoverflow
Question	Frias	View Question on Stackoverflow
Solution 1 - Homebrew	mipadi	View Answer on Stackoverflow
Solution 2 - Homebrew	Károly Kass	View Answer on Stackoverflow

How can I force homebrew to recompile?

Homebrew Problem Overview

Homebrew Solutions

Solution 1 - Homebrew

Solution 2 - Homebrew

How to have css3 animation to loop forever

How to return HTTP 400 response in Django?

Attributions