(just) retrieve and unpack a gem

[Rich Morin]

I need to retrieve and unpack a large number of gems, without
either (a) affecting my local gem installation or (b) getting
involved with dependencies. "gem fetch" will retrieve random
gems, but "gem unpack" is a bit more picky.

According to http://docs.rubygems.org/read/chapter/10#page34:

You can only unpack gems that you have installed, ...

I can hack the gem command to get the results I want, but it
seems like there should be a way to do this. Clues, anyone?

-r
--
http://www.cfcl.com/rdm Rich Morin
http://www.cfcl.com/rdm/resume (e-mail address removed)
http://www.cfcl.com/rdm/weblog +1 650-873-7841

Technical editing and writing, programming, and web development

 

[geistteufel]

Rich Morin a =E9crit :

I need to retrieve and unpack a large number of gems, without
either (a) affecting my local gem installation or (b) getting
involved with dependencies. "gem fetch" will retrieve random
gems, but "gem unpack" is a bit more picky.

According to http://docs.rubygems.org/read/chapter/10#page34:

You can only unpack gems that you have installed, ...

I can hack the gem command to get the results I want, but it
seems like there should be a way to do this. Clues, anyone?

-r
=20

Do it like this

cd /tmp
GEM_HOME=3D$PWD GEM_PATH=3D$PWD gem install PACKAGE
So look in cache directory. All gem is there.
Just do gem unpack GEM and done !
System is protected ! You can do it as user to be sure of that.


--=20
http://blog.celogeek.fr : Celogeek Blog
- a geek web site, with my tricks for phone (tuto, test ...), linux and m=
ore (french only)
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s ! Tous mes trucs et astuces la !

 

[Roger Pack]

I need to retrieve and unpack a large number of gems, without
either (a) affecting my local gem installation or (b) getting
involved with dependencies. "gem fetch" will retrieve random
gems, but "gem unpack" is a bit more picky.

According to http://docs.rubygems.org/read/chapter/10#page34:

You can only unpack gems that you have installed, ...

Oh no--you can unpack arbitrary gems [I think that's the only ones you
can].
gem fetch gem_name
gem unpack gem_name.version.gem
Cheers.
=r

 

[Joel VanderWerf]

cd /tmp
GEM_HOME=$PWD GEM_PATH=$PWD gem install PACKAGE
So look in cache directory. All gem is there.
Just do gem unpack GEM and done !
System is protected ! You can do it as user to be sure of that.

Won't that still install bin stuff? For example, gem install rake.

 

[geistteufel]

Joel VanderWerf a =E9crit :

Won't that still install bin stuff? For example, gem install rake.

You can do like this :

gem fetch rake
ls rake*.gem

et pour l'unpack
gem unpack rake*.gem

=3D> nothing install

--=20
http://blog.celogeek.fr : Celogeek Blog
- a geek web site, with my tricks for phone (tuto, test ...), linux and m=
ore (french only)
- Fan de linux, de mobile et de programmation, mon blog est fait pour vou=
s ! Tous mes trucs et astuces la !

 

[Rich Morin]

gem unpack gem_name.version.gem

That is really close, but it gets a nastygram:

$ gem unpack rails.2.3.2.gem
ERROR: While executing gem ... (Gem::Exception)
Cannot load gem at [rails.2.3.2.gem] in .../rails

However, this seems to work just fine:

$ gem unpack rails-2.3.2.gem
Unpacked gem: '.../rails/rails-2.3.2'

Thanks!

-r

 

[geistteufel]

Rich Morin a =C3=A9crit :

Roger Pack wrote:
=20

gem unpack gem_name.version.gem
=20

That is really close, but it gets a nastygram:

$ gem unpack rails.2.3.2.gem
ERROR: While executing gem ... (Gem::Exception)
Cannot load gem at [rails.2.3.2.gem] in .../rails

However, this seems to work just fine:

$ gem unpack rails-2.3.2.gem
Unpacked gem: '.../rails/rails-2.3.2'

Thanks!

-r
=20

no prob !

--=20
http://blog.celogeek.fr : Celogeek Blog
- a geek web site, with my tricks for phone (tuto, test ...), linux and m=
ore (french only)
- Fan de linux, de mobile et de programmation, mon blog est fait pour vou=
s ! Tous mes trucs et astuces la !

 

[Eric Hodel]

You can only unpack gems that you have installed, ...

There's probably a feature request for that, but I've not bothered to
implement it.

It would be a nice feature to have, though, so I welcome a patch if
you have more time than me.