Problem with Rails Installfest, what do I enter to correct issue? libreadline6-dev (issue)

I keep getting this error when using the first step of the Installfest.

The line is:

sudo apt-get install autoconf automake bison build-essential curl git-core libapr1 libaprutil1 libc6-dev libltdl-dev libreadline6 libreadline6-dev libsqlite3-0 libsqlite3-dev libssl-dev libtool libxml2-dev libxslt-dev libxslt1-dev libyaml-dev ncurses-dev nodejs openssl sqlite3 zlib1g zlib1g-dev

I receive:

Reading package lists… Done
Building dependency tree
Reading state information… Done
Note, selecting ‘git’ instead of ‘git-core’
Note, selecting ‘libreadline-dev’ instead of ‘libreadline6-dev’
Note, selecting ‘libxslt1-dev’ instead of ‘libxslt-dev’
Note, selecting ‘libncurses5-dev’ instead of ‘ncurses-dev’
Package libreadline6 is not available, but is referred to by another package.
This may mean that the package is missing, has been obsoleted, or
is only available from another source
E: Package ‘libreadline6’ has no installation candidate

After that message I entered:

dpkg --list|grep libreadline (at the suggestion of someone online)

I was returned:

ii libreadline7:amd64 7.0-3 amd64 GNU readline and history libraries, run-time libraries

The link to the site is below, the issue arises with the code in Step 1. "libreadline7" in the code a few lines above is actually highlighted in red if that helps. Thanks guys and gals!

1 Answer

I suggest to remove libreadline version from apt-get command and use universal one - libreadline-dev.

So the complete command would be

sudo apt-get install autoconf automake bison build-essential curl git-core \
libapr1 libaprutil1 libc6-dev libltdl-dev libreadline-dev libsqlite3-0 \
libsqlite3-dev libssl-dev libtool libxml2-dev libxslt-dev libxslt1-dev \
libyaml-dev ncurses-dev nodejs openssl sqlite3 zlib1g zlib1g-dev

Then follow InstallFest guide.

But I recommend to use Ruby 2.4.4 on step 4 (as it is marked stable on official site).