They can (and usually do) come with additional files to give information about the package, and despite the importance, only sometimes with a decent usage manual.Once the package manager installs a package, all these elements become accessible inside the environment they are set (e.g. and helps you with many things from downloading to packaging and distributing Ruby applications -- and of course, relevant binaries and libraries.
For example, when packages are built, the build can only download software during the "fetch" phase of ports building. This conflicts in some sense with gem which fetchs, builds and installs all in one step.
Another part of the reason we package gems is that it simplifies things.
Ports doesn't support installing multiple versions of the same package as easily as gem, yet some ports depend on the same gem but different versions of it.
For example: This creates a conflict in ports or creates extra work creating a port for both 1.0.1 and 1.1.1.
(This happens because gem and ruby software authors follow the default pessimistic version constraints shown on which suggests depending on the exact patch versions of a gem.
We're referring here to the suggested depend line like: This overly strict dependency version requirement isn't necessary as long as gems are following semantic versioning.
One of the goals of Ports is to build some packages that can be used to either build from ports or simply pkg install. Some prefer not to use one packaging system for installing their web server and another for installing the web application they run in that web server (and it's dependencies), instead just using one package system for everything.
Also, gems are often updated, but some prefer to always stick with known good versions of software before upgrading, so they like to have the same versions of packages all the time, even building themselves and using the same package files across many systems.
The Ruby Gems is a tool which manages Ruby application packages' lifecycle from creation to distribution. These tools make it very easy to find, install, and keep track of all other libraries that, as a developer, your programs need.
If you have ever worked with a Ruby based application, chances are you have used Ruby Gems to manage dependencies, libraries, or frameworks (e.g. In this Digital Ocean article, we will learn all the important bits and pieces of Ruby Gems, from the most basic to more advanced features. Application packages which are distributed via these tools are generally simple archives containing programs and metadata.
Once it finishes you will have Ruby on Rails installed on your droplet.