Detect shared-mime-info being installed in mingw32/mingw64 environments

[ziggythehamster]

Windows users can pacman -S mingw-w64-x86_64-shared-mime-info if they're running MSYS2 and then this gem will require no manual configuration. Should I add that to the README too?

[jellybob]

I've honestly not developed anything on Windows in so long I'm not sure how common MSYS2 is... if this is likely to be a solution for a good proportion of Windows users then sounds reasonable to add this and a note in the readme.

[haines]

I think MSYS2 is quite common because it's used by https://rubyinstaller.org/, so this seems like a sensible inclusion to me!

[jellybob]

Ahh cool, @ziggythehamster do you want to update the readme as well then? I'll get this merged later today, and probably another release out since there's a few other PRs that have gone in.

[ahorek]

good idea @ziggythehamster,
yes, MSYS2 is the most common solution on Windows.

however, it doesn't work for me. Path locations are ok, but they're executed outside of the msys2 environment, so ruby can't find these files.

ridk enable
ls /mingw64/share/mime/packages/freedesktop.org.xml
/mingw64/share/mime/packages/freedesktop.org.xml

File.exist?("/mingw64/share/mime/packages/freedesktop.org.xml")
=> false

[ziggythehamster]

It hadn't occurred to me that Ruby is enough Windows-aware that it wouldn't go through the MSYS2 path redirection subsystem.

Can you run this and let me know if it returns true? If so, I'll adjust my patch.

ruby -e 'require "pathname"; puts Pathname.new(RbConfig.ruby).parent.parent.join("share", "mime", "packages", "freedesktop.org.xml").exist?'

[ahorek]

@ziggythehamster nope, but this path works

File.join(ENV['RI_DEVKIT'].to_s, "/mingw64/share/mime/packages/freedesktop.org.xml")

where RI_DEVKIT is C:\Ruby27-x64\msys64