installing ruby 1.9.3 in michael hartl's ruby on rails tutorial - railstutorial.org

I'm working on Michael Hartl's ruby on rails tutorial http://ruby.railstutorial.org/ruby-on-rails-tutorial-book#sec-development_tools.
I installed Git, updated my OS to 10.8.2 and downloaded XCode 4.5.2.
when I type in
rvm install 1.9.3
this long thing comes up...
Ruby (and needed base gems) for your selection will be installed shortly.
Before it happens, please read and execute the instructions below.
Please use a separate terminal to execute any additional commands.
Notes for Mac OS X 10.8.2, Xcode 4.5.2.
For JRuby: Install the JDK. See http://developer.apple.com/java/download/ # Current Java version "1.6.0_26"
For IronRuby: Install Mono >= 2.6
For Ruby 1.9.3: Install libksba # If using Homebrew, 'brew install libksba'
For Opal: Install Nodejs with NPM. See http://nodejs.org/download/
To use an RVM installed Ruby as default, instead of the system ruby:
rvm install 1.8.7 # installs patch 357: closest supported version
rvm system ; rvm gemset export system.gems ; rvm 1.8.7 ; rvm gemset import system.gems # migrate your gems
rvm alias create default 1.8.7
And reopen your terminal windows.
Xcode and gcc:
Right now Ruby requires gcc to compile, but Xcode 4.2 and later no longer ship with gcc. Instead they ship with llvm-gcc (to which gcc is a symlink) and clang, neither of which are supported for building Ruby. Xcode 4.1 was the last version to ship gcc, which was /usr/bin/gcc-4.2.
Xcode 4.1 and earlier:
- Ruby will build fine.
Xcode 4.2 and later (including Command Line Tools for Xcode):
- If you have gcc-4.2 (and friends) from an earlier Xcode version, Ruby will build fine.
- If you don't have gcc-4.2, you have two options to get it:
* Install apple-gcc42 from Homebrew
* Install osx-gcc-installer
Homebrew:
If you are using Homebrew, you can install the apple-gcc42 and required libraries from homebrew/dupes:
brew update
brew tap homebrew/dupes
brew install autoconf automake apple-gcc42
rvm pkg install openssl
Xcode 4.2+ install or/and Command Line Tools for Xcode is required to provide make and other tools.
osx-gcc-installer:
If you don't use Homebrew, you can download and install osx-gcc-installer: https://github.com/kennethreitz/osx-gcc-installer.
Warning: Installing osx-gcc-installer on top of a recent Xcode is known to cause problems, so you must uninstall Xcode before installing osx-gcc-installer. Afterwards you may install Xcode 4.2+ or Command Line Tools for Xcode if you desire.
** NOTE: Currently, Node.js is having issues building with osx-gcc-installer. The only fix is to install Xcode over osx-gcc-installer.
Press 'q' to continue.
~
(END)
Originally I had to get homebrew and
brew install libksba
but I did that already and it works. That leads to "Xcode and gcc:" and everything below it.
So, I have homebrew, and the following three commands work:
brew update
brew tap homebrew/dupes
brew install autoconf automake apple-gcc42
But when I try
rvm pkg install openssl
this is what happens
Fetching openssl-1.0.1c.tar.gz to /Users/adamzerner/.rvm/archives
Extracting openssl to /Users/adamzerner/.rvm/src/openssl-1.0.1c
Configuring openssl in /Users/adamzerner/.rvm/src/openssl-1.0.1c.
Compiling openssl in /Users/adamzerner/.rvm/src/openssl-1.0.1c.
Error running 'make', please read /Users/adamzerner/.rvm/log/openssl/make.log
Please note that it's required to reinstall all rubies:
rvm reinstall all --force
Updating openssl certificates
Error running 'update_openssl_certs', please read /Users/adamzerner/.rvm/log/openssl.certs.log
And this is what happens when I try what it says...
Adam-Zerners-MacBook-Pro:~ adamzerner$ rvm reinstall all --force
Adam-Zerners-MacBook-Pro:~ adamzerner$
some other information...
I don't see a .rvm folder under adamzerner, so I can't read what it tells me to (not that I would understand what I'd be reading anyway).
It seems that I have 1.8.7 installed:
Adam-Zerners-MacBook-Pro:~ adamzerner$ ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]
So... to summarize... when I try to run
rvm install 1.9.3
I get the gcc/Xcode problem. To fix that it says to download apple-gcc42 from Homebrew. When I do that, I get a problem after doing
rvm pkg install openssl
The problem being that I need to reinstall all rubies. When I do that:
rvm reinstall all --force
it seems that nothing happens.
Thanks in advance to anyone willing to help me with this problem!
EDIT: I forgot to say this before. For the "long thing" up above, when I press q to continue, this is what happens...
Searching for binary rubies, this might take some time.
https://rvm.io/binaries/osx/10.8/x86_64/ruby-1.9.3-p327.tar.bz2 - #configure
ruby-1.9.3-p327 - #download
ruby-1.9.3-p327 - #extract
ruby-1.9.3-p327 - #validate
Libraries missing for ruby-1.9.3-p327: env. Refer to your system manual for installing libraries
Mounting remote ruby failed, trying to compile.
Fetching yaml-0.1.4.tar.gz to /Users/adamzerner/.rvm/archives
Extracting yaml to /Users/adamzerner/.rvm/src/yaml-0.1.4
Configuring yaml in /Users/adamzerner/.rvm/src/yaml-0.1.4.
Error running './configure --prefix=/Users/adamzerner/.rvm/usr', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/yaml/configure.log
Compiling yaml in /Users/adamzerner/.rvm/src/yaml-0.1.4.
Error running 'make', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/yaml/make.log
Installing Ruby from source to: /Users/adamzerner/.rvm/rubies/ruby-1.9.3-p327, this may take a while depending on your cpu(s)...
ruby-1.9.3-p327 - #downloading ruby-1.9.3-p327, this may take a while depending on your connection...
ruby-1.9.3-p327 - #extracted to /Users/adamzerner/.rvm/src/ruby-1.9.3-p327 (already extracted)
ruby-1.9.3-p327 - #configuring
Error running './configure --enable-shared --disable-install-doc --prefix=/Users/adamzerner/.rvm/rubies/ruby-1.9.3-p327 --with-opt-dir=/Users/adamzerner/.rvm/usr', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/configure.log
There has been an error while running configure. Halting the installation.
EDIT: What happens when I follow the github link OliverAtkinson posted
Last login: Wed Dec 26 15:55:12 on ttys000
Adam-Zerners-MacBook-Pro:~ adamzerner$ brew update
Updated Homebrew from 751a0d6e to c67c126c.
==> New Formulae
ume
==> Updated Formulae
akka global markdown ruby slrn
basex gnuplot mu ruby-build ttytter
casperjs gradle qt shiboken vice
cassandra groonga qt5 shocco wine
discount jenkins rakudo-star signing-party xvid
Adam-Zerners-MacBook-Pro:~ adamzerner$ brew tap homebrew/dupes
Error: Already tapped!
Adam-Zerners-MacBook-Pro:~ adamzerner$ brew install autoconf automake apple-gcc42
Error: autoconf-2.69 already installed
Error: automake-1.12.6 already installed
Error: apple-gcc42-4.2.1-5666.3 already installed
Adam-Zerners-MacBook-Pro:~ adamzerner$ brew remove autoconf automake apple-gcc42
Uninstalling /usr/local/Cellar/autoconf/2.69...
Uninstalling /usr/local/Cellar/automake/1.12.6...
Uninstalling /usr/local/Cellar/apple-gcc42/4.2.1-5666.3...
Adam-Zerners-MacBook-Pro:~ adamzerner$ brew install autoconf automake apple-gcc42
==> Downloading http://ftpmirror.gnu.org/autoconf/autoconf-2.69.tar.gz
Already downloaded: /Library/Caches/Homebrew/autoconf-2.69.tar.gz
==> Patching
patching file bin/autoreconf.in
==> ./configure --prefix=/usr/local/Cellar/autoconf/2.69
==> make install
/usr/local/Cellar/autoconf/2.69: 69 files, 2.0M, built in 13 seconds
==> Downloading http://ftpmirror.gnu.org/automake/automake-1.12.6.tar.gz
Already downloaded: /Library/Caches/Homebrew/automake-1.12.6.tar.gz
==> ./configure --prefix=/usr/local/Cellar/automake/1.12.6
==> make install
/usr/local/Cellar/automake/1.12.6: 130 files, 2.1M, built in 16 seconds
==> Downloading http://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg
Already downloaded: /Library/Caches/Homebrew/apple-gcc42-4.2.1-5666.3.pkg
==> Caveats
NOTE:
This formula provides components that were removed from XCode in the 4.2
release. There is no reason to install this formula if you are using a
version of XCode prior to 4.2.
This formula contains compilers built from Apple's GCC sources, build
5666.3, available from:
http://opensource.apple.com/tarballs/gcc
All compilers have a `-4.2` suffix. A GFortran compiler is also included.
==> Summary
/usr/local/Cellar/apple-gcc42/4.2.1-5666.3: 104 files, 75M, built in 5 seconds
Adam-Zerners-MacBook-Pro:~ adamzerner$ rvm pkg install openssl
Fetching openssl-1.0.1c.tar.gz to /Users/adamzerner/.rvm/archives
Extracting openssl to /Users/adamzerner/.rvm/src/openssl-1.0.1c
Configuring openssl in /Users/adamzerner/.rvm/src/openssl-1.0.1c.
Compiling openssl in /Users/adamzerner/.rvm/src/openssl-1.0.1c.
Error running 'make', please read /Users/adamzerner/.rvm/log/openssl/make.log
Please note that it's required to reinstall all rubies:
rvm reinstall all --force
Updating openssl certificates
Error running 'update_openssl_certs', please read /Users/adamzerner/.rvm/log/openssl.certs.log
Adam-Zerners-MacBook-Pro:~ adamzerner$ CC=/usr/local/bin/gcc-4.2 rvm reinstall 1.9.3 --patch falcon --force-autoconf -j 3
Removing /Users/adamzerner/.rvm/src/ruby-1.9.3-p327...
/Users/adamzerner/.rvm/rubies/ruby-1.9.3-p327 has already been removed.
Fetching yaml-0.1.4.tar.gz to /Users/adamzerner/.rvm/archives
Extracting yaml to /Users/adamzerner/.rvm/src/yaml-0.1.4
Configuring yaml in /Users/adamzerner/.rvm/src/yaml-0.1.4.
Error running './configure --prefix=/Users/adamzerner/.rvm/usr', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/yaml/configure.log
Compiling yaml in /Users/adamzerner/.rvm/src/yaml-0.1.4.
Error running 'make -j3', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/yaml/make.log
Installing Ruby from source to: /Users/adamzerner/.rvm/rubies/ruby-1.9.3-p327, this may take a while depending on your cpu(s)...
ruby-1.9.3-p327 - #downloading ruby-1.9.3-p327, this may take a while depending on your connection...
ruby-1.9.3-p327 - #extracting ruby-1.9.3-p327 to /Users/adamzerner/.rvm/src/ruby-1.9.3-p327
ruby-1.9.3-p327 - #extracted to /Users/adamzerner/.rvm/src/ruby-1.9.3-p327
Applying patch /Users/adamzerner/.rvm/patches/ruby/1.9.3/p327/falcon.diff
ruby-1.9.3-p327 - #autoreconf-f
ruby-1.9.3-p327 - #configuring
Error running './configure --enable-shared --disable-install-doc --prefix=/Users/adamzerner/.rvm/rubies/ruby-1.9.3-p327 --with-opt-dir=/Users/adamzerner/.rvm/usr', please read /Users/adamzerner/.rvm/log/ruby-1.9.3-p327/configure.log
There has been an error while running configure. Halting the installation.
Adam-Zerners-MacBook-Pro:~ adamzerner$ ruby -v
ruby 1.8.7 (2012-02-08 patchlevel 358) [universal-darwin12.0]
Adam-Zerners-MacBook-Pro:~ adamzerner$

I've successfully downloaded Ruby 1.9.3 now!
I think the problem was that I hadn't downloaded Command Line Tools from XCode. See http://robots.thoughtbot.com/post/27985816073/the-hitchhikers-guide-to-riding-a-mountain-lion
note that for whoami, it's using the backtick key, which is right above the tab key. It is NOT using quotes.
After I downloaded Command Line Tools, I then typed in rvm install 1.9.3. I got the same "long thing" as before, but at that point I had everything I needed, so I just pressed q to continue, and ruby 1.9.3 was successfully installed!
note: although it was successfully installed, when I typed ruby -v, it still said it was 1.8.7 even though it wasn't. However, after closing and reopening the terminal, it then said that the version was indeed 1.9.3.

Related

cannot link libpq on Mac M1

I've been trying to run the Rust Diesel crate on my Macbook M1 and it doesn't work. The final part of the compilation gets broken by the following error:
= note: ld: warning: ignoring file /usr/local/Cellar/libpq/14.1/lib/libpq.dylib, building for macOS-arm64 but attempting to link with file built for macOS-x86_64
Undefined symbols for architecture arm64:
When I get the info for libpq I get the following:
maxwellflitton#Maxwells-MacBook-Pro vanguard % brew info libpq
libpq: stable 14.1 (bottled) [keg-only]
Postgres C API library
https://www.postgresql.org/docs/14/libpq.html
/usr/local/Cellar/libpq/14.1 (2,335 files, 27.8MB)
Poured from bottle on 2022-01-09 at 00:14:32
From: https://github.com/Homebrew/homebrew-core/blob/HEAD/Formula/libpq.rb
License: PostgreSQL
==> Dependencies
Required: krb5 ✔, openssl#1.1 ✔
==> Caveats
libpq is keg-only, which means it was not symlinked into /usr/local,
because conflicts with postgres formula.
If you need to have libpq first in your PATH, run:
echo 'export PATH="/usr/local/opt/libpq/bin:$PATH"' >> ~/.zshrc
For compilers to find libpq you may need to set:
export LDFLAGS="-L/usr/local/opt/libpq/lib"
export CPPFLAGS="-I/usr/local/opt/libpq/include"
I've tried installing with the following command:
RUSTFLAGS='-L /usr/local/Cellar/libpq/14.1/lib' cargo install diesel_cli --no-default-features --features postgres --force
But I still get the same error. Will it just be easier to wipe the whole thing and start again and if so how would I do this? Other people on the internet using the M1 seem to be able to get round the problem with a simple brew install libpq. Never had any issues with my previous intel mac. My ~/.cargo/config.toml has the following configuration:
[target.aarch64-apple-darwin]
rustflags = '-L /usr/local/Cellar/libpq/14.1/lib -L /opt/homebrew/lib'
Surprisingly this worked
brew install postgresql libpq
cargo clean
cargo build
cargo install diesel_cli --no-default-features --features postgres
I think it had to do with installing diesel-cli before installing the necessary dependencies. Cleaning the cargo dependencies and reinstalling worked for me
on my M1 mac, I installed the postgresql client and library with brew:
brew install postgresql libpq
and attempted to install diesel_cli again, this time it worked fine:
cargo install diesel_cli --no-default-features --features postgres
for some reason, simply installing libpq was not enough to install diesel_cli, i had to install the postgres library and the client.
Encountered a similar problem, and the issue was coming from my brew config (I restored my filesystem from my mac Intel) :
❯ brew config
...
macOS: 12.6-x86_64
...
Therefore, brew was downloading packages built for intel processors. I uninstalled and reinstalled brew following their website and now brew config is correct:
❯ brew config
...
macOS: 12.6-arm64
...
Hope this helps!
I have a Mac M1 and installed both postgresql and libpq with brew
I eventually succeeded in installing diesel_cli with these lines in my ~/.cargo/config.toml file
[target.aarch64-apple-darwin]
rustflags = '-L /opt/homebrew/opt/libpq/lib -L /opt/homebrew/lib'
source was https://github.com/diesel-rs/diesel/issues/2605

unable to update to Ruby 2.1.4

Currently running Yosemite and unable to update to ruby 2.1.4 , see below.
Guidos-MacBook-Pro:~ Guido$ rvm install 2.1.4
Searching for binary rubies, this might take some time.
No binary rubies available for: osx/10.10/x86_64/ruby-2.1.4.
Continuing with compilation. Please read 'rvm help mount' to get more information on binary rubies.
Checking requirements for osx_brew.
/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 26: /usr/local/Library/brew.rb: Undefined error: 0
ERROR: '/bin' is not writable - it is required for Homebrew, try 'brew doctor' to fix it!
Requirements installation failed with status: 1.
So after I stepped away from the computer for a few hours and came back again, I figured out the issue was that Homebrew was broken after I updated OS to Yosemite. Here is the link http://ryantvenge.com/2014/09/ruby-homebrea-yosemite/ to the solution. If that is not working see commands below.
To fix Homebrew:
cd /System/Library/Frameworks/Ruby.framework/Versions
sudo ln -s Current 1.8
brew update
sudo rm 1.8
To update to ruby 2.1.4:
rvm install 2.1.4
rvm use 2.1.4

Vagrant cannot install nokogiri-dependent plugins

I'm trying to install the rackspace plugin for vagrant (1.5.1):
vagrant plugin install vagrant-rackspace
But it complains
Bundler, the underlying system Vagrant uses to install plugins,
reported an error. The error is shown below. These errors are usually
caused by misconfigured plugin installations or transient network
issues. The error from Bundler is:
An error occurred while installing nokogiri (1.6.1), and Bundler
cannot continue. Make sure that gem install nokogiri -v '1.6.1'
succeeds before bundling.
However gem install nokogiri -v '1.6.1' and /Applications/Vagrant/embedded/bin/gem install nokogiri -v '1.6.1' both work.
I've looked at a bunch of SO threads and blog posts. Things I've tried that have not worked
Running xcode-select --install
Installing full xcode
brew install gcc-4.2
Remove rvm and rvm version of ruby
Install nokogiri w/ built-in (mac) ruby and vagrant-embedded ruby
Despite the fact that nokogiri installs fine (#5 above) without sudo on both counts, vagrant plugin install vagrant-rackspace still fails...
So, in summary, I can install the nokogiri plugin, however I cannot install the vagrant rackspace plugin, can you help me get the plugin installed?
Related threads
Error to install Nokogiri on OSX 10.9 Maverick?
nokogiri - ERROR: Failed to build gem native extension
Full output of vagrant plugin install vagrant-rackspace --debug
I'm on OSX Mavericks and this worked for me:
Set as environment property:
NOKOGIRI_USE_SYSTEM_LIBRARIES=1
Then install as usual:
vagrant plugin install vagrant-rackspace
Vagrant ships with embedded Ruby and isolated gem environment. So installing gems manually to your "normal" gem environment won't help.
The first issue is that you should never use sudo to run any vagrant command. If possible, please remove ~/.vagrant.d/ or at least chown it recursively back to your own user. You could also try upgrading Vagrant to v1.5.1.
Then please gist/pastebin the output of vagrant plugin install vagrant-rackspace --debug and ~/.vagrant.d/gems/gems/nokogiri-1.6.1/ext/nokogiri/mkmf.log.
The posted solutions didn't work for me. Instead I needed to specify the libxml2, libxslt and libiconv that I installed with homebrew (Do this first).
I installed the gem manually with the embedded ruby with the following [very concise] command line:
/Applications/Vagrant/embedded/bin/gem install \ # select the embedded ruby
--install-dir ~/.vagrant.d/gems \ # install to the vagrant dir
nokogiri -v '1.6.2.1' -- \ # pass options to nokogiri install
--with-xml2-include=/usr/local/Cellar/libxml2/2.7.8/include/libxml2 \
--with-xml2-lib=/usr/local/Cellar/libxml2/2.7.8/lib \
--with-xslt-dir=/usr/local/Cellar/libxslt/1.1.26 \
--with-iconv-include=/usr/local/Cellar/libiconv/1.13.1/include \
--with-iconv-lib=/usr/local/Cellar/libiconv/1.13.1/lib
This worked for me on Mavericks and Vagrant 1.6.1:
CC=/usr/bin/gcc vagrant plugin install vagrant-rackspace
I tried NOKOGIRI_USE_SYSTEM_LIBRARIES=1 but got an error saying that system libxml2 is too old.
Warning: This is a super-hacky solution, though it's hard to call it that.
Yesterday I installed Vagrant on another OSX Mavericks box. Like many other posts I read on SO "all I had to do" was run xcode-select --install and bingo vagrant plugin install vagrant-rackspace worked like a charm.
Today I was mired down in the Bundler code again when it dawned on me that since this is an isolated ruby environment why not nuke my ~/.vagrant.d directory and copy the same directory from the successful build on the other box...
The result? A working vagrant rackspace on my laptop! I'm not sure I'll ever figure out what was really wrong, but if anyone wants a shot at the 100 point bounty, I'm still open to suggestions!
In my case the nokogiri folders and their files located in ~/vagrant.d/gems/gems had wrong rights (user/group).
After changing them to username:staff (username being your console user name), it works like a charm.
Similarly with my case, I have an issue while installing vagrant-omnibus plugin for Vagrant 1.6.3 on OSX Mavericks 10.9.4 and ruby 2.0.0p247 rbenv.
I tried setting the env NOKOGIRI_USE_SYSTEM_LIBRARIES to 1 or true, then update+install but the same error still there.
I found that there is a suggestion in https://github.com/mitchellh/vagrant/issues/3769 to use the specify the baked in nokogiri version and this works for me. So, I also wrote a quick noted for myself to refer this unfortunates issue.
If Nate Murray's solution doesn't work, I found upgrading to a Vagrant version > 1.6.4 fixed the issue (as noted in this Github issue: https://github.com/mitchellh/vagrant/issues/3769)
in my case while trying to install vagrant-parallels, i had to check the Command line tools folder had an error in the naming for some reason. Fixing that allowed nokigiri to work well

Grunt need compass installed in system PATH Warning

I want to install Yeoman, Grunt and bower to my node project.
I made a node project in Eclipse (using the nodeclipse plugin) and navigated to the project folder
(which is H:\Eclipse Workspace\YoTest) in cmd and typed in:
npm install yo -g
npm install generator-webapp -g
yo webapp
selected: Sass (with compass), in cmd
And then typed:
grunt serve
to run the webapp.
I get the following error message:
Done, without errors.
Warning: Running "compass:server" (compass) task
Warnin: You need to have Ruby and Compass installed and in your system PATH for
this task to work. More info: https://github.com/gruntjs/grunt-contrib-compass
Use --force to continue.
Aborted due to warnings. Use --force to continue.
Aborted due to warnings.
How do I fix this so that I can run my node project with grunt?
PS: I'm not sure if it has anything to do with the problem, but I also get the following errors on line 1-27 in my package.json:
Multiple markers at this line
- strings must use singlequote
- strings must use singlequote
This is my package.json
{
"name": "yotest2",
"version": "0.0.0",
"dependencies": {},
"devDependencies": {
"grunt": "~0.4.1",
"grunt-contrib-copy": "~0.4.1",
"grunt-contrib-concat": "~0.3.0",
"grunt-contrib-uglify": "~0.2.0",
"grunt-contrib-compass": "~0.7.0",
"grunt-contrib-jshint": "~0.7.0",
"grunt-contrib-cssmin": "~0.7.0",
"grunt-contrib-connect": "~0.5.0",
"grunt-contrib-clean": "~0.5.0",
"grunt-contrib-htmlmin": "~0.1.3",
"grunt-bower-install": "~0.7.0",
"grunt-contrib-imagemin": "~0.2.0",
"grunt-contrib-watch": "~0.5.2",
"grunt-rev": "~0.1.0",
"grunt-autoprefixer": "~0.5.0",
"grunt-usemin": "~2.0.0",
"grunt-mocha": "~0.4.0",
"grunt-modernizr": "~0.4.0",
"grunt-newer": "~0.6.0",
"grunt-svgmin": "~0.2.0",
"grunt-concurrent": "~0.4.0",
"load-grunt-tasks": "~0.2.0",
"time-grunt": "~0.2.0",
"jshint-stylish": "~0.1.3"
},
"engines": {
"node": ">=0.8.0"
}
}
I'm on Windows.
The warning seems to say it all.
If you're on OS X or Linux you probably already have Ruby installed; test with ruby -v in your terminal. When you've confirmed you have Ruby installed, run gem update --system && gem install compass to install Compass and Sass.
If that doesn't help, then install the grunt-contrib-compass package with the instructions at https://github.com/gruntjs/grunt-contrib-compass
I struggled for hours with this same error message when running a gulp watch, and despite installing, reinstalling, rebooting, it would still show up.
Got it working by uninstalling all my packages :
sudo gem uninstall bundler bundle compass sass compass-core compass-import-once
And installing bundle only
sudo gem install bundle bundler
And then run the command that magically installed everything I needed :
$ bundle
Fetching gem metadata from https://rubygems.org/...........
Fetching version metadata from https://rubygems.org/..
Installing sass 3.4.9
Installing sassy-maps 0.4.0
Installing breakpoint 2.5.0
Installing hitimes 1.2.2
Installing timers 4.0.1
Installing celluloid 0.16.0
Using chunky_png 1.3.3
Using multi_json 1.10.1
Installing compass-core 1.0.1
Using compass-import-once 1.0.5
Using rb-fsevent 0.9.4
Using ffi 1.9.6
Using rb-inotify 0.9.5
Installing compass 1.0.1
Installing json 1.8.1
Installing listen 2.8.3
Installing thor 0.19.1
Installing fontcustom 1.3.7
Installing modular-scale 2.0.5
Installing normalize-scss 3.0.2
Installing sass-css-importer 1.0.0.beta.0
Installing sassy-buttons 0.2.6
Installing susy 2.1.3
Using bundler 1.8.0
Bundle complete! 9 Gemfile dependencies, 24 gems now installed.
Use `bundle show [gemname]` to see where a bundled gem is installed.
Post-install message from compass:
Compass is charityware. If you love it, please donate on our behalf at http://umdf.org/compass Thanks!
Post-install message from fontcustom:
>> Thanks for installing Font Custom! Please ensure that fontforge is installed before compiling any icons. Visit <http://fontcustom.com> for instructions.
Now, don't ask me why, but it all works :-)
Hope that can help anybody out there, I really struggled on this one ...
Just need to write on console -> (or sudo )gem install compass ,because the npm command wouldn´t do anything
For Mac OS X 10.10 (Yosemite)
Search for installed ruby version
ruby -v.
If present
update gems using sudo gem update --system
else install rvm with ruby using
\curl -sSL https://get.rvm.io | bash -s stable --ruby
Then install the Xcode Command Line Tools
xcode-select --install .
This will take some time.
Now install compass using sudo gem install compass.
For me this worked like a charm.
Ruby and Ruby Gems ought to be installed which in turn facilitate the installation of Sass and compass. Check this out http://hecktechsolutions.blogspot.in/2015/03/installation-of-gems-compass-and-sass.html

Installing mongodb with homebrew in mac mountain lion ( 10.8.5 ) never ends

I'm in 10.8.5 and traying to install mongodb but it just never ends, here is the output:
~ r01010010$ brew reinstall mongodb
==> Reinstalling mongodb
==> Downloading http://downloads.mongodb.org/src/mongodb-src-r2.4.7.tar.gz Already
downloaded: /Library/Caches/Homebrew/mongodb-2.4.7.tar.gz
==> Downloading patches
################################################################## 100,0%
==> Patching patching file src/third_party/v8/SConscript
==> scons install --prefix=/usr/local/Cellar/mongodb/2.4.7 -j4 --64 --cc=/usr/bin/clang --cxx=/usr/bin/clang++
So the las line is the last thing i get and still there like open (maybe an infinite loop).
For me, I also got this message:
Warning: No developer tools installed.
You should install the Command Line Tools.
Run xcode-select --install to install them.
and actually running the following command solved the issue.