[DRE-maint] Bug#899324: ruby-font-awesome-rails: broken with fonts-font-awesome 5

[Antonio Terceiro]

Package: ruby-font-awesome-rails
Version: 4.7.0.2-1
Severity: grave
Justification: renders package unusable

Recently fonts-font-awesome 5 has been uploaded to ustable. There are
some significant changes upstream, including but not limited to font
files being renamed. fonts-font-awesome 5.0.10-4 includes a
compatibility layer for packages that assumed the structure of
FontAwesome v4, but some packages that make too aggressive assumptions
about the internal structure of FontAwesome are beyond help.

This is the case of ruby-font-awesome-rails.

The symlinks to the font files are not broken:

~$ ll /usr/share/ruby-font-awesome-rails/app/assets/fonts/
total 12K
lrwxrwxrwx 1 root root 61 jul  6  2017 fontawesome-webfont.woff2 -> ../../../../fonts/woff/font-awesome/fontawesome-webfont.woff2
lrwxrwxrwx 1 root root 60 jul  6  2017 fontawesome-webfont.woff -> ../../../../fonts/woff/font-awesome/fontawesome-webfont.woff
lrwxrwxrwx 1 root root 63 jul  6  2017 fontawesome-webfont.ttf -> ../../../../fonts/truetype/font-awesome/fontawesome-webfont.ttf
lrwxrwxrwx 1 root root 58 jul  6  2017 fontawesome-webfont.svg -> ../../../../fonts/svg/font-awesome/fontawesome-webfont.svg
lrwxrwxrwx 1 root root 58 jul  6  2017 fontawesome-webfont.eot -> ../../../../fonts/eot/font-awesome/fontawesome-webfont.eot
lrwxrwxrwx 1 root root 55 jul  6  2017 FontAwesome.otf -> ../../../../fonts/opentype/font-awesome/FontAwesome.otf

and, this package includes a modified copy of the FontAwesome CSS file
(/usr/share/ruby-font-awesome-rails/app/assets/stylesheets/font-awesome.css.erb),
that is also out of date.

My suggestion would be to:

- base the CSS template on
  /usr/share/fonts-font-awesome/css/font-awesome.css which is a modified
  version of the FontAwesome v5 stylesheet adding backwards
  compatibility for usage of FontAwesome v4.
- symlink /usr/share/ruby-font-awesome-rails/app/assets/fonts/ directly
  to /usr/share/fonts-font-awesome/webfonts instead of symlinking
  individual files (and probably rename the link from fonts to webfonts)

-- System Information:
Debian Release: buster/sid
  APT prefers unstable-debug
  APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'unstable'), (500, 'testing'), (1, 'experimental-debug'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.16.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=pt_BR.UTF-8, LC_CTYPE=pt_BR.UTF-8 (charmap=UTF-8), LANGUAGE=pt_BR:pt:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages ruby-font-awesome-rails depends on:
ii  fonts-font-awesome  5.0.10-4
ii  ruby                1:2.5.1

ruby-font-awesome-rails recommends no packages.

ruby-font-awesome-rails suggests no packages.

-- no debconf information
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