如何在 codenvy.io / goormide.io 中安装 gem pg 和 mysql2？

Question

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user@c6b65b118139:/projects/rails-jafar$ gem install pg
Building native extensions. This could take a while...
ERROR:  Error installing pg:
        ERROR: Failed to build gem native extension.

    current directory: /usr/local/bundle/gems/pg-1.1.4/ext
/usr/local/bin/ruby -r ./siteconf20190831-425-ife1vi.rb extconf.rb
checking for pg_config... no
No pg_config... trying anyway. If building fails, please try again with
 --with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
Can't find the 'libpq-fe.h header
*** 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.

apt-get 安装 libmysqlclient-dev

libmysqlclient-dev E: Could not open lock file /var/lib/dpkg/lock - open (13: Permission denied) E: Unable to lock the administration directory (/var/lib/dpkg/), are you root?

Answer 1

goorm.io 我通过安装 libpq-dev

来解决

apt-get install libpq-dev

Answer 2

sudo apt-get update

sudo apt-get install mysql-client libmysqlclient-dev

gem install mysql2

如何在 codenvy.io / goormide.io 中安装 gem pg 和 mysql2？

How to install gem pg and mysql2 in codenvy.io / goormide.io?

ruby-on-rails

ruby

pg

mysql2