What am I doing wrong?

ruby-talk
1

After installing pathname2 on my Windows box went so well, I decided to
go ahead and install it elsewhere for consistency, and it universally failed.
On the same Windows box under Cygwin, on Linux, on Mac OS X, I got the same
result. The gem installation appeared to succeed but Ruby couldn't find
the newly-installed module file. Any help?

$ sudo gem install pathname2
Password:
Attempting local installation of 'pathname2'
Local gem file not found: pathname2*.gem
Attempting remote installation of 'pathname2'
Updating Gem source index for: http://gems.rubyforge.org
Install required dependency facade? [Yn] y
Successfully installed pathname2-1.1.0
Successfully installed facade-1.0.1
Installing RDoc documentation for pathname2-1.1.0...
Installing RDoc documentation for facade-1.0.1...
$ irb -r pathname2
/usr/lib/ruby/1.8/irb/init.rb:215:in `require': No such file to load -- pathname2 (LoadError)
        from /usr/lib/ruby/1.8/irb/init.rb:215:in `load_modules'
        from /usr/lib/ruby/1.8/irb/init.rb:213:in `each'
        from /usr/lib/ruby/1.8/irb/init.rb:213:in `load_modules'
        from /usr/lib/ruby/1.8/irb/init.rb:21:in `setup'
        from /usr/lib/ruby/1.8/irb.rb:54:in `start'
        from /usr/bin/irb:13
$

2

try this:

irb -r rubygems -r pathname2

···

On 8/11/05, Mark J. Reed <mreed@thereeds.org> wrote:

After installing pathname2 on my Windows box went so well, I decided to
go ahead and install it elsewhere for consistency, and it universally failed.
On the same Windows box under Cygwin, on Linux, on Mac OS X, I got the same
result. The gem installation appeared to succeed but Ruby couldn't find
the newly-installed module file. Any help?

$ sudo gem install pathname2
Password:
Attempting local installation of 'pathname2'
Local gem file not found: pathname2*.gem
Attempting remote installation of 'pathname2'
Updating Gem source index for: http://gems.rubyforge.org
Install required dependency facade? [Yn] y
Successfully installed pathname2-1.1.0
Successfully installed facade-1.0.1
Installing RDoc documentation for pathname2-1.1.0...
Installing RDoc documentation for facade-1.0.1...
$ irb -r pathname2
/usr/lib/ruby/1.8/irb/init.rb:215:in `require': No such file to load -- pathname2 (LoadError)
        from /usr/lib/ruby/1.8/irb/init.rb:215:in `load_modules'
        from /usr/lib/ruby/1.8/irb/init.rb:213:in `each'
        from /usr/lib/ruby/1.8/irb/init.rb:213:in `load_modules'
        from /usr/lib/ruby/1.8/irb/init.rb:21:in `setup'
        from /usr/lib/ruby/1.8/irb.rb:54:in `start'
        from /usr/bin/irb:13
$

3

Jason Foreman <threeve.org@gmail.com> writes:

try this:

irb -r rubygems -r pathname2

Thanks, that worked . . . as does using "-r ubygems", which is a nice "nroff
-man"ish touch. And I see that the reason it worked on Windows is that it adds
"-rubygems" to $RUBYOPT, and children's mods to the environment affect their
parents in Windows, unlike in the Unixy world.

Is $RUBYOPT the best way to set things up so that rubygems is always
"prequire"d?

4

If you consistently use rubygems and can control your own environment, it is
probably the easiest choice.

See http://docs.rubygems.org/read/chapter/3#page70 for your list of options.

···

On Thursday 11 August 2005 04:21 pm, Mark J.Reed wrote:

Jason Foreman <threeve.org@gmail.com> writes:
>try this:
>
>irb -r rubygems -r pathname2

Thanks, that worked . . . as does using "-r ubygems", which is a nice
"nroff -man"ish touch. And I see that the reason it worked on Windows is
that it adds "-rubygems" to $RUBYOPT, and children's mods to the
environment affect their parents in Windows, unlike in the Unixy world.

Is $RUBYOPT the best way to set things up so that rubygems is always
"prequire"d?

--
-- Jim Weirich jim@weirichhouse.org http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct,
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)

5

Jim Weirich <jim@weirichhouse.org> writes:

See http://docs.rubygems.org/read/chapter/3#page70 for your list of options.

Which seem to boil down to "set RUBYOPT". Except that doesn't work
for gems which are themselves specified via -r. An explict
"ruby -rubygems -rsomeGem" works, but with RUBYOPT set to "-rubygems",
"ruby -rsomeGem" doesn't; I guess $RUBYOPT gets appended instead of
prepended and you wind up with the moral equivalent of
"ruby -rsomeGem -rubygems". So it's still not a complete solution.

What if I run a find command in my profile to find all the gem
directories and just manually add them all to RUBYLIB myself?

6

Mark J.Reed said:

Which seem to boil down to "set RUBYOPT". Except that doesn't work
for gems which are themselves specified via -r. An explict
"ruby -rubygems -rsomeGem" works, but with RUBYOPT set to "-rubygems",
"ruby -rsomeGem" doesn't; I guess $RUBYOPT gets appended instead of
prepended and you wind up with the moral equivalent of
"ruby -rsomeGem -rubygems". So it's still not a complete solution.

My understanding is that -r does not honor the override of the require
command.

···

--
-- Jim Weirich jim@weirichhouse.org http://onestepback.org
-----------------------------------------------------------------
"Beware of bugs in the above code; I have only proved it correct,
not tried it." -- Donald Knuth (in a memo to Peter van Emde Boas)