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How do I create a Unity launcher icon for Redcar in an RVM environment?

rated 0 times [ 2] [ 0] / answers: 1 / hits: 1560 / 2 Years ago, mon, february 14, 2022, 6:30:33

Redcar is a graphical application that is installed via a Ruby gem, and I have installed it in a Ruby environment that is managed by RVM.

A launcher icon isn't automatically installed, so I need to create one myself. I've tried using Unity's "Keep in launcher" option for the icon that is displayed while Redcar is running:

But when I exit Redcar and then click the launcher icon, the icon only flashes and Redcar does not open.

How can I create a working launcher icon?

I tried creating ~/.local/share/applications/redcar.desktop with the following contents:

[Desktop Entry]

Type=Application

Version=1.0

Name=Redcar

Comment=A programmer's text editor written in Ruby!

Icon=/home/ak/.rvm/gems/ruby-1.9.2-p290/gems/redcar-0.11/share/icons/redcar-icon-beta.png

Exec=/home/ak/.rvm/gems/ruby-1.9.2-p290/bin/redcar

Categories=Development;IDE;

The file is executable and is shown with the Redcar icon when I browse to ~/.local/share/applications in Nautilus, but nothing happens when I double-click it. Redcar runs fine when I enter /home/ak/.rvm/gems/ruby-1.9.2-p290/bin/redcar in a terminal.

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ranquctive

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answered 2 Years ago moloy · Accepted Answer

Ruby gems are installed to ~/.rvm/gems/ruby-$version@$gemset/ with RVM.

First, download this icon and save to ~/.local/share/icons/redcar.png.

Now, save the following to ~/bin/redcar.sh and make it executable with chmod +x ~/bin/redcar.sh.

#!/bin/bash

if [[ -s "$HOME/.rvm/scripts/rvm" ]] ; then



  # First try to load from a user install

  source "$HOME/.rvm/scripts/rvm"



elif [[ -s "/usr/local/rvm/scripts/rvm" ]] ; then



  # Then try to load from a root install

  source "/usr/local/rvm/scripts/rvm"



else



  printf "ERROR: An RVM installation was not found.

"



fi



rvm use 1.9.3@redcar-install

gem install redcar

redcar

Now, you'll need to create a desktop file manually pointing to the correct executable and icon. It should look something like:

[Desktop Entry]

Type=Application

Version=1.0

Name=Redcar

Comment=A programmer’s text editor written in Ruby and Java.

Icon=~/.local/share/icons/redcar.png

Exec=~/bin/redcar.sh

Categories=Development;IDE;

Place it in ~/.local/share/applications/redcar.desktop It should then show up in the dash search, and then you should be able to drag it to the Launcher.