[aur-general] TU application_R: Metal A-wing (a-wing)

[Bert Peters]

David Runge schreef op 2019-01-22 12:30:
> On 2019-01-22 17:09:35 (+0800), Metal A-wing wrote:
>> On Tue Jan 8 20:19:43 UTC 2019, David Runge wrote:
>> Why is use
>> `$(gem env gemdir)`
>> 
>> Instead of
>> 
>> `$(ruby -e'puts Gem.default_dir')`
> It's shorter and you don't have to spawn a ruby process to print
> something, if you can use the gem command directly.

I'm not a TU so take my this with a grain of salt, but I don't think 
this is the best advice.

It's shorter, admittedly, but `gem` spawns a ruby process just as the 
`ruby` version does. Using gem doesn't work however when `$GEM_HOME` is 
set, since then it reports the contents of that variable.

Especially for AUR packages using `$(ruby -e'puts Gem.default_dir')` is 
more convenient since most users do not build in a clean chroot, and the 
wiki actually recommends settings that environment variable so quite a 
few will have it.

Best,

Bert Peters.