Information about the package, happy, which is shipped with common Linux distributions. The happy package is designed for, LALR(1) Parser Generator for Haskell.
Package Name:
happy
Summary:
LALR(1) Parser Generator for Haskell
Description:
Happy is a parser generator system for Haskell, similar to the tool `yacc' for C. Like `yacc', 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).
Architecture:
x86_64
Version:
1.18.6
Release:
8.el6.2
Size:
232 k
Repository:
epel
From Repository:
Licence:
BSD
Control the happy package with the following handy commands outlined below.
yum install happy
This command will install happy on the server.
yum remove happy
This command will un-install happy on the server. When you run this command, you will be asked if you are sure that you want to remove happy, so you have to manually confirm that you want to do this.
yum -y remove happy
This command will un-install happy on the server. When you run this command with th e -y flag, you will not be prompted to check that you are sure you want to remove the package - so be sure you absolutely want to remove happy when using the -y flag.
yum update happy
This command will update happy to the latest version. When you run this command, you will be asked if you are sure that you want to remove happy, so you have to manually confirm that you want to do this.
yum -y update happy
This command will update happy to the latest version. When you run this command with the -y flag, you will not be prompted to check that you are sure you want to remove the package - so be sure you absolutely want to remove happy when using the -y flag.
yum info happy
This command will show you core information about the happy package.
yum deplist happy
This command will show you the dependencies for happy. Thankfully, when using Yum, if dependencies are required, these are also installed at the same time so you don't have to worry too much about that.
yum check-update happy
This command will check if there is an update waiting on happy. When you run this command this will return nothing if there is nothing to update, or, will return the package name if the package is due to be updated.