How To Install happy on Debian 10
Introduction
In this tutorial we learn how to install happy on Debian 10.
What is happy
happy is:
Happy is a parser generator system for Haskell, similar to the tool
yacc' for C. Likeyacc’, it takes a file containing an annotated BNF specification of a grammar and produces a Haskell module containing a parser for the grammar.
Happy is flexible: you can have several Happy parsers in the same program, and several entry points to a single grammar. Happy can work in conjunction with a lexical analyser supplied by the user (either hand-written or generated by another program), or it can parse a stream of characters directly (but this isn’t practical in most cases).
There are three methods to install happy on Debian 10. We can use apt-get, apt and aptitude. In the following sections we will describe each method. You can choose one of them.
Install happy Using apt-get
Update apt database with apt-get using the following command.
sudo apt-get update
After updating apt database, We can install happy using apt-get by running the following command:
sudo apt-get -y install happy
Install happy Using apt
Update apt database with apt using the following command.
sudo apt update
After updating apt database, We can install happy using apt by running the following command:
sudo apt -y install happy
Install happy Using aptitude
If you want to follow this method, you might need to install aptitude first since aptitude is usually not installed by default on Debian. Update apt database with aptitude using the following command.
sudo aptitude update
After updating apt database, We can install happy using aptitude by running the following command:
sudo aptitude -y install happy
How To Uninstall happy on Debian 10
To uninstall only the happy package we can use the following command:
sudo apt-get remove happy
Uninstall happy And Its Dependencies
To uninstall happy and its dependencies that are no longer needed by Debian 10, we can use the command below:
sudo apt-get -y autoremove happy
Remove happy Configurations and Data
To remove happy configuration and data from Debian 10 we can use the following command:
sudo apt-get -y purge happy
Remove happy configuration, data, and all of its dependencies
We can use the following command to remove happy configurations, data and all of its dependencies, we can use the following command:
sudo apt-get -y autoremove --purge happy
Dependencies
happy have the following dependencies:
References
Summary
In this tutorial we learn how to install happy package on Debian 10 using different package management tools: apt, apt-get and aptitude.