Show messages errors:
Required ruby-2.6.1 is not installed.
To install do: 'rvm install "ruby-2.6.1"'
ruby -v
ruby 2.6.1p33 (2019-01-30 revision 66950) [x64-mingw32]
rails -v
Rails 5.2.2
First of all, I doubt that RVM may not be updated to support this version of Ruby. As I know the following version is supported, you can version by following command and response should match.
rvm --version
1.29.7
If you have updated version then I will do the following to check if RVM has also the same version of ruby installed.
I will check the content of my project root folder's following file
cat .ruby-version
If it has mention same, as rvm is also complaining that I will run the following command on rvm to check if this ruby is really installed in RVM
rvm list
It will show a list of rubies installed and it should include 2.6.1 in the end. If you can't see this list then you probably need to install using the following command
rvm install "ruby-2.6.1"
If it is showing than can you try the following command and see what result comes
rvm use 2.6.1
If all good, then try the following command to see which ruby is being used
which ruby
response must include .rvm/rubies/ mean you are using .rvm ruby otherwise, you may using the system built in ruby.
Just wrote may help you to diagnos issue.
Are you using rbenv? If so, I'd recommend running rvm implode as described here.
if you are using rbenv
see if you have it available in your list :
rbenv install --list | grep 2.6.1
if not, fetch it
cd ~/.rbenv/plugins/ruby-build && git pull && cd -
now if you try again
rbenv install -l | grep 2.6.1
so just run the installation command:
rbenv install 2.6.1
Downloading ruby-2.6.1.tar.bz2... 08:36:17
-> https://cache.ruby-lang.org/pub/ruby/2.6/ruby-2.6.1.tar.bz2
Installing ruby-2.6.1...
Installed ruby-2.6.1 to ~/.rbenv/versions/2.6.1
now you can use it for global or local projects. if local :
rbenv local 2.6.1
Am trying to set up rails on mac using rbenv and Homebrew.
Currently getting the following message when attempting to 'gem install rails':
ERROR: While executing gem ... (Gem::FilePermissionError)
You don't have write permissions for the /Library/Ruby/Gems/2.0.0 directory.
username-mbp:projects username$ gem install rails
Any ideas??
If you are using rbenv, you should not use sudo to install gems. rbenv very helpfully installs your gems under your home directory in a way that allows you to use different gems for each installed Ruby version. When you change versions of Ruby you will really appreciate this.
To see the current version of Ruby, use rbenv local. For me this prints:
2.2.2
To see all the Ruby versions on your system of which rbenv is aware:
rbenv versions
rbenv stores the version specifier in a file called .ruby-version. This allows you to use different versions of Ruby for different projects, each version having its own set of gems.
When you try to install rails and get the Gem::FilePermissionError, it means that rbenv is not active, or you are deliberately installing into the "system" Ruby. There is nothing wrong with this per se, but you are not taking advantage of rbenv.
I recommend installing Rails again, using rbenv local to ensure that you are adding the gems to the correct path. You'll know this is working when
gem env gemdir
produces something like:
/Users/username/.rbenv/versions/2.2.2/lib/ruby/gems/2.2.0
See https://github.com/sstephenson/rbenv#installation for more info.
This probably means that you used sudoat some point, which means that you run a command that allows you (as a permitted user to execute a command as the superuser or another user) See here: http://linux.about.com/od/commands/l/blcmdl8_sudo.htm.
Can you please paste the commands you used for installing rbenv, ruby, gem, brew, etc.? Also please paste the output of brew doctorto see if environment is correctly configured for Homebrew. Also, please paste the OSX version and rbenv versionsif rbenv is installed.
The steps for installing ruby on rails on OSX are:
Install Homebrew by:
ruby -e "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/master/install)"`` (as seen here: http://brew.sh/). Run brew doctor and brew updateto see if everything is fine.
Install ruby: OS X comes with Ruby installed (Mavericks/Yosemite even gets version 2.0.0, previously it was only 1.8.7).
Install rbenv: it can be done either by GitHub Checkout or Brew. You probably should use brew. Run brew install rbenv ruby-build(this will also install ruby-build -https://github.com/sstephenson/ruby-build#readme-). You can also use this command brew install rbenv ruby-build rbenv-gem-rehash. Then echo 'eval "$(rbenv init -)"' >> ~/.bash_profile (to enable shims and autocompletion). You should problably run this too: echo 'export PATH="$HOME/.rbenv/bin:$PATH"' >> ~/.bash_profile. Close terminal and open it again. Install the preferred version of ruby (if you want): rbenv install 2.0.0-p353.
Install Bundler: gem install bundler.
Install SQLite: gem install sqlite3
Install Rails: gem install rails.
So, the error you are having is due to permissions (you can understand about them here: http://www.tutorialspoint.com/unix/unix-file-permission.htm). Many people suggest fixing the issue with sudo or chown (http://www.cyberciti.biz/faq/how-to-use-chmod-and-chown-command/). I don't recommend that as it messes with system configuration. It will be better that you run:
rbenv install 2.1.2
rbenv global 2.1.2
gem update --system
When I run with this error like a year ago, what I did was uninstall everything and start again... but, probably that'll take too long.
These links might help you:
ruby for mac, ruby rbenv, rbenv githube, rubies and gems, question on stack
Use sudo:
sudo gem install rails
This guide helped me a lot: Setup Ruby On Rails on
Mac OS X 10.10 Yosemite
I used rvm to install ruby 1.9.3. even though it was successfully installed, it complained about libyaml. and now every time i wanna install a gem (say rails) this warning shows up:
It seems your ruby installation is missing psych (for YAML output). To eliminate this warning, please install libyaml and reinstall your ruby.
I use Mac os X 10.7 (Lion).
In my case
rvm pkg install libyaml
and
rvm reinstall ruby-1.9.3-p125
solved the problem.
For people using Ubuntu, make sure that libtool is installed prior to the steps above:
sudo apt-get install libtool
For macOS users (with homebrew):
rm -rf /usr/local/lib/ruby/gems/ && brew reinstall ruby
brew install libyaml
rvm reinstall 1.9.3
Is what worked for me (on Snow Leopard).
for ubuntu and rvm
sudo apt-get install libtool
rvm pkg install libyaml
rvm reinstall 1.9.3
worked
If not using rvm, but rather you are building and installing ruby 1.9.3 from scratch — for example, you're managing your ruby versions with rbenv — you must install libyaml first. Get it from http://pyyaml.org/; at the moment, the file you want is http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz. Open the tarball and cd into the resulting folder. Then:
./configure --prefix=/usr/local
make
sudo make install
You are now ready to build ruby. Download ruby from http://ftp.ruby-lang.org/pub/ruby/. Open the tarball and cd into the resulting folder. Now:
./configure --prefix=/wherever/you/want/it/to/go
make
make install
(Or possibly sudo make install, depending on where you're putting it.) If using rbenv, you'll know it has worked if you switch to rbenv global 1.9.3-p194 (or whatever your version is called) and gem --version works without a warning. That worked for me on Mac OS X 10.6.8. (Update: I just tried this on Mac OS X 10.8.1 and it seems to have worked fine there too.)
In my case the solution was to add the psych gem to the Gemfile.
I had this problem. libyaml wouldn't compile. It turns out I was missing libtool.
yum install libtool
yum install libyaml (or rvm pkg install libyaml)
rvm reinstall 1.9.3
That solved my problem.
If you have installed ruby on macOS with homebrew, try this solution.
rm -rf /usr/local/lib/ruby/gems/ && brew reinstall ruby
Note that this will get rid of all installed gems. Best save a list of installed gems with gem list before you run this.
$ brew doctor
$ brew link libyaml
I reinstalled ruby 1.9.3 with libyaml support:
rvm reinstall 1.9.3 --with-libyaml
I made sure that I would use 1.9.3 before installing psych:
rvm use 1.9.3
I installed psych:
gem install psych
I got this fixed finally. The issue was that even though I installed libyaml with brew, it was never linked. I had to remove a conflicting header file and then brew link libyaml.
Installing ruby with rvm for mac osx, use autolibs to install libyaml and first uninstalling libyaml helps.
This worked for me:
brew uninstall libyaml
rvm autolibs enable
rvm reinstall ruby-2.1.1
I had the same problem (Lion 10.7.4), and fixed it by upgrading rvm then reinstalling ruby
1) upgrade rvm https://rvm.io//rvm/install/
curl -L https://get.rvm.io | bash -s stable --ruby
2) Then use rvm to reinstall ruby 1.9.3 (which had been previously installed with the earlier version of rvm)
rvm reinstall 1.9.3
sudo port install libyaml # or brew install libyaml
rvm get latest
rvm pkg install iconv
rvm pkg install openssl
rvm reinstall 1.9.3 --with-openssl-dir=~/.rvm/usr --with-iconv-dir=~/.rvm/usr
curl -OL http://rubyforge.org/frs/download.php/75414/linecache19-0.5.13.gem
curl -OL http://rubyforge.org/frs/download.php/75415/ruby-debug-base19-0.11.26.gem
gem install linecache19-0.5.13.gem ruby-debug-base19-0.11.26.gem -- --with-ruby-include=$rvm_path/src/ruby-1.9.3-p125/
gem install ruby-debug19
rvm reload
reload your .rvmrc (cd out, cd in)
bundle
None of these answers worked for me.
I found my answer on https://github.com/sstephenson/ruby-build/issues/119
I am on Centos 6.3 Virtual Machine.
YOU MUST install libyaml before you install ruby. IF you ALREADY installed ruby you must get rid of the files before compiling source again!!!
# cd to your ruby source location
rm -rf /usr/local/lib/ruby # clean out ruby files
./configure
make && make install
gem -v # check if error is fixed
I built the libyaml files separately from source and installed them in /usr/local/lib. The ruby that RVM created still did not see them, and rather than muck with the makefile or the system LD_LIBRARY_PATH I just copied /usr/local/lib/libyaml* to ~/.rvm/rubies/ruby-1.9.3-p327/lib/
That quieted the warning.
This is what worked for me on Ubuntu:
- installing libyaml-dev (sudo apt-get install libyaml-dev)
- installing rvm + ruby 1.9.3
I tried all of these answers and still wasn't able to get it working. I installed libyaml with homebrew and then installed Ruby 1.9.3 and 2.0.0 with rvm. Each time it complained that I was missing psych (libyaml). But trying to install libyaml told me it was already installed. Rinse, repeat. Urgh.
Finally, what I did was to uninstall libyaml. Then I enabled autolibs in rvm, which (at least in OSX) allows rvm to install and manage dependencies more directly. Now when I installed the Rubies, rvm was able to install libyaml and recognize that it was in the right spot.
So if you've tried all of the other options, try actually removing libyaml and then installing your Rubies. It's count-intuitive from the error messages, but that's what finally worked for me.
I had the same problem (Cent OS 5.7), none of the above solutions worked to me.
// My console warning
/usr/local/rvm/rubies/ruby-1.9.3-p286/lib/ruby/1.9.1/yaml.rb:56:in `<top (required)>':
It seems your ruby installation is missing psych (for YAML output).
To eliminate this warning, please install libyaml and reinstall your ruby.
After doing several re-installs, I realized it's looking for yaml in ruby version of 1.9.1 instead of 1.9.3. So i downgraded
// obviously after installing `libyaml`
rvm remove all
rvm install 1.9.1
rvm use 1.9.1 --default
And it worked 8D!
On CentOS 6.3 none of the above worked. However installing libyaml from source before installing ruby resolved the problem.
$ wget http://pyyaml.org/download/libyaml/yaml-0.1.4.tar.gz
$ tar xzvf yaml-0.1.4.tar.gz
$ cd yaml-0.1.4
$ ./configure --prefix=/usr/local
$ make
$ sudo make install
and then
rvm install 1.9.3
gem install rails
I'm using
rvm 1.16.20 (version) by Wayne E. Seguin ,
Michal Papis [https://rvm.io/]
and also got the following error during bundle install
.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/yaml.rb:56:in `': It seems
your ruby installation is missing psych (for YAML output). To
eliminate this warning, please install libyaml and reinstall your
ruby.
Here are three different ways to resolve this error w/o having to gem install psych
export LD_LIBRARY_PATH=/usr/local/lib
alter /etc/ld.so.conf
sudo su - root
echo /usr/local/lib64 >> /etc/ld.so.conf
echo /usr/local/lib >> /etc/ld.so.conf
ldconfig
Fix rvm ruby 1.9.3 installation via
patch .rvm/scripts/functions/manage/ruby < ruby-1.9.3-LDFLAGS.patch
rvm uninstall ruby-1.9.3-p194
export LDFLAGS='-L /usr/local/lib64 -L/usr/local/lib -Xlinker -R/usr/local/lib64 -Xlinker -R/usr/local/lib'
rvm install ruby-1.9.3-p194 --disable-binary
grep configure_args .rvm/src/ruby-1.9.3-p194/config.log # to confirm LDFLAG
$ diff -c .rvm/{src/rvm/,}scripts/functions/manage/ruby
*** .rvm/src/rvm/scripts/functions/manage/ruby 2012-11-10 06:28:14.000000000 +0000
--- .rvm/scripts/functions/manage/ruby 2013-01-25 17:18:00.000000000 +0000
***************
*** 106,123 ****
# when relative is in effect libyaml is installed in ruby itself so it will be moved with ruby
prefix_path="${rvm_rubies_path}/${rvm_ruby_string}" libyaml
! __rvm_update_configure_env CFLAGS="-I${rvm_rubies_path}/${rvm_ruby_string}/include"
! __rvm_update_configure_env LDFLAGS="-L${rvm_rubies_path}/${rvm_ruby_string}/lib"
if [[ -d "${rvm_rubies_path}/${rvm_ruby_string}/lib64" ]]
! then __rvm_update_configure_env LDFLAGS="-L${rvm_rubies_path}/${rvm_ruby_string}/lib64"
fi
else
libyaml_installed || libyaml # Installs libyaml
! __rvm_update_configure_env CFLAGS="-I${rvm_path}/usr/include"
! __rvm_update_configure_env LDFLAGS="-L${rvm_path}/usr/lib"
if [[ -d "${rvm_path}/usr/lib64" ]]
! then __rvm_update_configure_env LDFLAGS="-L${rvm_path}/usr/lib64"
fi
fi
--- 106,123 ----
# when relative is in effect libyaml is installed in ruby itself so it will be moved with ruby
prefix_path="${rvm_rubies_path}/${rvm_ruby_string}" libyaml
! __rvm_update_configure_env CFLAGS="-I${rvm_rubies_path}/${rvm_ruby_string}/include ${CFLAGS}"
! __rvm_update_configure_env LDFLAGS="-L${rvm_rubies_path}/${rvm_ruby_string}/lib ${LDFLAGS}"
if [[ -d "${rvm_rubies_path}/${rvm_ruby_string}/lib64" ]]
! then __rvm_update_configure_env LDFLAGS="-L${rvm_rubies_path}/${rvm_ruby_string}/lib64 ${LDFLAGS}"
fi
else
libyaml_installed || libyaml # Installs libyaml
! __rvm_update_configure_env CFLAGS="-I${rvm_path}/usr/include ${CFLAGS}"
! __rvm_update_configure_env LDFLAGS="-L${rvm_path}/usr/lib ${LDFLAGS}"
if [[ -d "${rvm_path}/usr/lib64" ]]
! then __rvm_update_configure_env LDFLAGS="-L${rvm_path}/usr/lib64 ${LDFLAGS}"
fi
fi
I also struggled with the same failures with rvm install ruby-2.0.0 for many, MANY hours. I had tried all the different methods to install libyaml; wget source, yum and rvm. I also tried all of the different approaches listed in similar threads. Because I tried all the different methods, I had multiple installations and locations of libyaml.
RVM is perfectly capable of installing the necessary dependencies in ~/.rvm. Simply removing the libyaml files from non-RVM install fixed this issue for me:
sudo rm /usr/local/lib/libyaml*.*
rvm reinstall ruby-2.0.0-p0
Works!
NON-RVM ruby install method.
% uname -a
Linux localhost.localdomain 2.6.32-358.el6.x86_64 #1 SMP Fri Feb 22 00:31:26 UTC 2013 x86_64 x86_64 x86_64 GNU/Linux
% cat /etc/redhat-release
CentOS release 6.4 (Final)
% wget http://apt.sw.be/redhat/el5/en/x86_64/dag/RPMS/rpmforge-release-0.3.6-1.el5.rf.x86_64.rpm
% sudo rpm -K rpmforge-release-0.3.6-1.el5.rf.*.rpm"
% sudo rpm -ivh rpmforge-release-0.3.6-1.el5.rf.*.rpm"
DISABLE rpmforge by editing this file and set enabled=0
% sudo vi /etc/yum.repos.d/rpmforge.repo
% grep rpmforge ~/.aliases
alias rpmforge "sudo yum --disablerepo='*' --enablerepo='rpmforge'"
% rpmforge install libyaml libyaml-devel
% sudo yum list installed | grep libyaml
libyaml.x86_64 0.1.4-1.el5.rf #rpmforge
libyaml-devel.x86_64 0.1.4-1.el5.rf #rpmforge
The libyaml-devel is the key.
% tar zxvf ruby-1.9.3-p448.tar.gz
% cd ruby-1.9.3-p448
% ./configure -prefix=$HOME/ruby-1.9.3-p448
% make ; make install
% cd $HOME; ln -s ./ruby-1.9.3-p448 ruby
Update your path and source .cshrc
% echo $PATH
/home/francis/ruby/bin:/usr/sbin:/home/francis/bin:/home/francis/jdk1.7.0_25/bin:/usr/lib64/qt-3.3/bin:/usr/local/bin:/usr/bin:/bin
% which ruby
/home/francis/ruby/bin/ruby
% gem update --system
Set your GEM_HOME in .cshrc and source
% echo $GEM_HOME
% /home/francis/ruby/lib/ruby/gems
% gem install mysql2 pg ruby-debug-ide rails capistrano capistrano-ext passenger
If you are building ruby from source (I built 1.9.3 on Fedora 20), you will need this before you do the configure/make to build ruby:
yum install libyaml-devel
(in addition to yum install libyaml.) Similar to Francis's answer using rpmforge above.
I was having this error and noticed I had different versions of Ruby installed with HomeBrew, along with many gems that I no longer used. So did a full clean up like this:
$ brew remove --force ruby # remove all versions installed
$ sudo rm -rf /usr/local/lib/ruby # remove all gems and leftover files
$ brew install ruby
$ gem install bundler
$ bundle install
If you don't use a Gemfile, make sure you know which gems to reinstall.
In my case all I needed to do was
rm -rf /usr/local/lib/ruby/gems/2.4.0/gems/psych-2.2.4
rm -rf /usr/local/lib/ruby/gems/2.4.0/extensions/x86_64-darwin-16/2.4.0/psych-2.2.4
Now, FWIW, gem list includes
psych (2.2.4, default: 2.2.2)
Ubuntu
Using RVM
Reason: Conflicting Psych gem versions between ruby 2.4.4 and ruby 2.5.1
I spent a few hours trying to get my error to go away and none of the replies here suited my case, so I thought I would post how I solved it...
In my case when I ran gem list | grep psych, I had the following output: psych(default: 3.1.0, default: 3.0.2).
Apparently since version 2.5.0, ruby depends on the newer version of psych (3.1.0) and having both set as default was messing up everything. Notice that I never ended up finding out why those were both set as default - I completely wiped out rvm and ruby versions from my computer due to this.
So in order to remove the older version (3.0.2) from being set as default, head to ~/.rvm/gems/ruby-x.x.x#global/specifications/default. If you run ls | grep psych it will return both versions of the gem here. If you want to maintain 3.1.0 as default just run mv psych-3.0.2.gemspec ../ and then try running gemlist to make sure it is listing only one version as default now...
tl;dr
cd /.rvm/gems/ruby-x.x.x#global/specifications/default
mv psych-3.0.2 ../
Hope this helps someone!
On Snow Leopard, the solution by Catharz did not work for me. This solution, however, did:
brew install libyaml
rvm get head
rvm reinstall 1.9.3 --with-gcc=clang
(The rvm reinstall gave me a warning about clang not having the option "--with-libyaml" but it solved the error message regardless.)
This worked for me at least on Ubuntu 10.04
$ sudo apt-get install libtool
$ rvm reinstall 1.9.3
On Solaris:
# sudo crle -64 -l /usr/local/lib
to add /usr/local/lib to the shared library search path
(see man crle)
When I switch from 64 bit to 32 bit on Snow Leopard 10.6.8, I had reinstalled ruby (used rvm) to run on 32bit and met the same problem. So I just 'cleanup' all thing that cached by rvm before and problems solved. Hope this tip can help someone.
rvm cleanup all
rvm install ruby_version_here //(This way, rvm will also re-download newest yaml).
BTW, if you still meet this problem, I think you can try:
gem install psych