How To Install ormolu on Fedora 34

ormolu is A formatter for Haskell source code

Introduction

In this tutorial we learn how to install ormolu on Fedora 34.

What is ormolu

Ormolu is a formatter for Haskell source code. The project was created with the following goals in mind - Using GHC’s own parser to avoid parsing problems caused by haskell-src-exts. - Let some whitespace be programmable. The layout of the input influences the layout choices in the output. This means that the choices between single-line/multi-line layouts in each particular situation are made by the user, not by an algorithm. This makes the implementation simpler and leaves some control to the user while still guaranteeing that the formatted code is stylistically consistent. - Writing code in such a way so it’s easy to modify and maintain. - Implementing one “true” formatting style which admits no configuration. - That formatting style aims to result in minimal diffs while still remaining very close to “conventional” Haskell formatting people use. - Choose a style compatible with modern dialects of Haskell. As new Haskell extensions enter broad use, we may change the style to accommodate them. - Idempotence - Be well-tested and robust to the point that it can be used in large projects without exposing unfortunate, disappointing bugs here and there.

We can use yum or dnf to install ormolu on Fedora 34. In this tutorial we discuss both methods but you only need to choose one of method to install ormolu.

Install ormolu on Fedora 34 Using dnf

Update yum database with dnf using the following command.

sudo dnf makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ormolu using dnf by running the following command:

sudo dnf -y install ormolu

Install ormolu on Fedora 34 Using yum

Update yum database with yum using the following command.

sudo yum makecache --refresh

The output should look something like this:

Fedora 34 - x86_64                               20 kB/s | 6.6 kB     00:00
Fedora 34 openh264 (From Cisco) - x86_64        1.4 kB/s | 989  B     00:00
Fedora Modular 34 - x86_64                       68 kB/s | 6.5 kB     00:00
Fedora 34 - x86_64 - Updates                    3.5 kB/s | 6.2 kB     00:01
Fedora Modular 34 - x86_64 - Updates             17 kB/s | 5.9 kB     00:00
Metadata cache created.

After updating yum database, We can install ormolu using yum by running the following command:

sudo yum -y install ormolu

How To Uninstall ormolu on Fedora 34

To uninstall only the ormolu package we can use the following command:

sudo dnf remove ormolu

ormolu Package Contents on Fedora 34

/usr/bin/ormolu
/usr/lib/.build-id
/usr/lib/.build-id/07
/usr/lib/.build-id/07/3022f8f81b9ee65abf4f2d3d8348c41c45a5fb

References

Summary

In this tutorial we learn how to install ormolu on Fedora 34 using yum and dnf.