# How to examine dependencies of previous gems **URL:** \ **Category:** Ruby\ **Created:** [September 4, 2009, 5:58pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960 "2009-09-04T17:58:09Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 5:58pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/1 "2009-09-04T17:58:09Z")
Hi, I am trying to see if there are any differences in the dependencies for a specific gem between different releases. For example: sherwin-mac{198}% gem -v 1.3.4 sherwin-mac{199}% gem dep -r mongrel -v 1.1.5 Gem mongrel-1.1.5 gem\_plugin (\>= 0.2.3, runtime) daemons (\>= 1.0.3, runtime) fastthread (\>= 1.0.1, runtime) cgi\_multipart\_eof\_fix (\>= 2.4, runtime) sherwin-mac{200}% gem dep -r mongrel -v 1.1.4 No gems found matching mongrel (= 1.1.4) Am I missing something simple? tks, louie ---
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 6:33pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/2 "2009-09-04T18:33:21Z")
On Sep 4, 2009, at 12:00 PM, Louis Sherwin wrote: > Am I missing something simple? > > ## tks, louie > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). Well, we certainly are! How about: gem list mongrel Do you have mongrel 1.1.4 installed? -Rob Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) removed\_email\_address@domain.invalid ---
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 6:46pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/3 "2009-09-04T18:46:24Z")
Rob B. wrote: > On Sep 4, 2009, at 12:00 PM, Louis Sherwin wrote: > > Well, we certainly are! How about: gem list mongrel > Do you have mongrel 1.1.4 installed? > > -Rob > > Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) > removed\_email\_address@domain.invalid Hi Rob, I don’t have 1.1.4 installed locally. In fact that is what I’m trying to avoid. What I am hoping to do is look at the remote gems (-r) without having to install each release on my system first. tks, louie ---
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 7:12pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/4 "2009-09-04T19:12:00Z")
On Sep 4, 2009, at 12:46 PM, Louis Sherwin wrote: > > removed\_email\_address@domain.invalid > > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). Oh, that leads to an explanation, too. Does this help? $ gem list -d mongrel \*\*\* LOCAL GEMS \*\*\* mongrel (1.1.5, 1.1.4, 1.1.3, 1.0.1) Author: Zed A. Shaw Rubyforge: [http://rubyforge.org/projects/mongrel](http://rubyforge.org/projects/mongrel) Homepage: [http://mongrel.rubyforge.org](http://mongrel.rubyforge.org) Installed at (1.1.5): /Library/Ruby/Gems/1.8 (1.1.4): /Library/Ruby/Gems/1.8 (1.1.3): /Library/Ruby/Gems/1.8 (1.0.1): /System/Library/Frameworks/Ruby.framework/ Versions/1.8/usr/lib/ruby/gems/1.8 ``` A small fast HTTP library and server that runs Rails, Camping, ``` Nitro and Iowa apps. $ gem dep mongrel -v=1.1.4 Gem mongrel-1.1.4 gem\_plugin (\>= 0.2.3, runtime) daemons (\>= 1.0.3, runtime) fastthread (\>= 1.0.1, runtime) cgi\_multipart\_eof\_fix (\>= 2.4, runtime) So there doesn’t appear to be any difference in the dependencies between 1.1.4 and 1.1.5. -Rob Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) removed\_email\_address@domain.invalid ---
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 7:46pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/5 "2009-09-04T19:46:47Z")
Rob B. wrote: > Oh, that leads to an explanation, too. Does this help? Sorry I guess I was not clear that my question is about using gem commands and not specifically about mongrel. I just used mongrel as an example I just noticed something the leads me to believe that this issue has to do with the way the gem server is setup and not with the dependency command. There is a new release or rails and the default query now shows the last two releases. I can look a the dependencies for each of the releases listed but not any previous release. gem query -r -n ^rails$ \*\*\* REMOTE GEMS \*\*\* rails (2.3.4, 2.3.3) gem dep rails -r -v 2.3.3 Gem rails-2.3.3 rake (\>= 0.8.3, runtime) activesupport (= 2.3.3, runtime) activerecord (= 2.3.3, runtime) actionpack (= 2.3.3, runtime) actionmailer (= 2.3.3, runtime) activeresource (= 2.3.3, runtime) sherwin-mac{226}% gem dep rails -r -v 2.2.2 No gems found matching rails (= 2.2.2) tks, louie ---
**Author:** ![sherwin](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/s/7ea924/32.png) [@sherwin](https://www.ruby-forum.com/u/sherwin)\ **Post date:** [September 4, 2009, 7:55pm UTC](https://www.ruby-forum.com/t/how-to-examine-dependencies-of-previous-gems/174960/6 "2009-09-04T19:55:54Z")
On Sep 4, 2009, at 1:46 PM, Louis Sherwin wrote: > to > rails (2.3.4, 2.3.3) > sherwin-mac{226}% gem dep rails -r -v 2.2.2 > No gems found matching rails (= 2.2.2) > > tks, louie $ gem query --remote --name-matches ‘^rails$’ --all \*\*\* REMOTE GEMS \*\*\* rails (2.3.4, 2.3.3, 2.3.2, 2.2.2, 2.1.2, 2.1.1, 2.1.0, 2.0.5, 2.0.4, 2.0.2, 2.0.1, 2.0.0, 1.2.6, 1.2.5, 1.2.4, 1.2.3, 1.2.2, 1.2.1, 1.2.0, 1.1.6, 1.1.5, 1.1.4, 1.1.3, 1.1.2, 1.1.1, 1.1.0, 1.0.0, 0.14.4, 0.14.3, 0.14.2, 0.14.1, 0.13.1, 0.13.0, 0.12.1, 0.12.0, 0.11.1, 0.11.0, 0.10.1, 0.10.0, 0.9.5, 0.9.4.1, 0.9.4, 0.9.3, 0.9.2, 0.9.1, 0.9.0, 0.8.5, 0.8.0, 0.7.0, 0.6.5, 0.6.0) You may be right. The older versions certainly do exist (2.2.2 in particular), but must not be searched/found the same way. -Rob Rob B. [http://agileconsultingllc.com](http://agileconsultingllc.com) removed\_email\_address@domain.invalid