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comp.lang.ruby

Gem dependency (Hpricot

Han Holl

11/22/2006 12:38:00 PM

Hi,

This is from Hpricot's install page:

If you'd prefer not to use RubyGems, you can also acquire a plain Ruby
distribution: http://code.whytheluckystiff.net/dist/hpric...

However, if you download, and try to build with rake, you get:
bever:/usr/src/ruby/hpricot-0.4> rake
(in /home/source/src/ruby/hpricot-0.4)
rake aborted!
no such file to load -- rubygems
/home/source/src/ruby/hpricot-0.4/Rakefile:3:in `require'
(See full trace by running task with --trace)

So not preferring to use gems doesn't really buy you much.

Han Holl

PS I'm sending this to this list because Hpricot is not alone in this.
Dependencies on gem are not good. Of course I'll give in, install gem,
and subsequent dependencies will go unnoticed here, until I try to run
something on a different computer.
4 Answers

Ross Bamford

11/22/2006 1:12:00 PM

0

On Wed, 22 Nov 2006 12:38:13 -0000, Han Holl <han.holl@gmail.com> wrote:=


> Hi,
>
> This is from Hpricot's install page:
>
> If you'd prefer not to use RubyGems, you can also acquire a plain Ruby=

> distribution: http://code.whytheluckystiff.net/dist/hpric...
>
> However, if you download, and try to build with rake, you get:
> bever:/usr/src/ruby/hpricot-0.4> rake
> (in /home/source/src/ruby/hpricot-0.4)
> rake aborted!
> no such file to load -- rubygems
> /home/source/src/ruby/hpricot-0.4/Rakefile:3:in `require'
> (See full trace by running task with --trace)
>
> So not preferring to use gems doesn't really buy you much.
>
> Han Holl
>
> PS I'm sending this to this list because Hpricot is not alone in this.=

> Dependencies on gem are not good. Of course I'll give in, install gem,=

> and subsequent dependencies will go unnoticed here, until I try to run=

> something on a different computer.
>

I think that most projects whose Rakefile depends on Gems do so because =
=

they need Gem::Specification for the Rake GemPackageTask. Generally I te=
nd =

to leave out an explicit require and do something like:

require 'rubygems' rescue nil

# .... later:

if ! defined?(Gem)
warn "Package Target requires RubyGEMs"
else
spec =3D Gem::Specification.new do |s|
...
end
end

-- =

Ross Bamford - rosco@roscopeco.remove.co.uk

Ross Bamford

11/22/2006 1:16:00 PM

0

On Wed, 22 Nov 2006 13:12:05 -0000, Ross Bamford
<rosco@roscopeco.remove.co.uk> wrote:

> I think that most projects whose Rakefile depends on Gems do so because
> they need Gem::Specification for the Rake GemPackageTask. Generally I
> tend to leave out an explicit require and do something like:
>

Oops, I meant explicit dependency (in gems) rather than explicit require.

--
Ross Bamford - rosco@roscopeco.remove.co.uk

_why

11/22/2006 5:28:00 PM

0

On Wed, Nov 22, 2006 at 09:38:13PM +0900, Han Holl wrote:
> If you'd prefer not to use RubyGems, you can also acquire a plain Ruby
> distribution: http://code.whytheluckystiff.net/dist/hpric...
>
> However, if you download, and try to build with rake, you get:
> bever:/usr/src/ruby/hpricot-0.4> rake
> (in /home/source/src/ruby/hpricot-0.4)
> rake aborted!
> no such file to load -- rubygems
> /home/source/src/ruby/hpricot-0.4/Rakefile:3:in `require'
> (See full trace by running task with --trace)
>
> So not preferring to use gems doesn't really buy you much.

Oh, I'm sorry, there should be a setup.rb in there. I've just updated the file
give it a try again. The installation commands is just `ruby setup.rb`.

_why

Han Holl

11/23/2006 10:34:00 AM

0

On 11/22/06, _why <why@ruby-lang.org> wrote:
> Oh, I'm sorry, there should be a setup.rb in there. I've just updated the file
> give it a try again. The installation commands is just `ruby setup.rb`.
>

Thanks. It doesn't seem to be in SVN though, which is what I use.
It's no big deal, and I'm very enthioustastic about Hpricot.
Before this I experimented with htree, to_rexml and xpath, but this
combo was to slow to be workable.
The README file, by the way, ends rather abrubtly.

Han Holl

(Gmail seems to encourage top-posting, strange)