Thanks for the explanation about the requirement to expose an executable
file.
In answer to what I was trying to do:
I came across this when automating patch/build of gems after doing a
gem/bundle update.
My initial use case was patching `gem-ctags` to use `ripper-tags`.
I wrote a extremely robust (don't hate me!) shell script to
automatically patch and build gems.
If you're interested in what I came up with:
https://gist.github.com/HaleTom/275f28403828b9b9b93d313990fc94f4
Features:
# Work around `patch` returning non-zero if some patch hunks are already
applied
# Apply all patches in $patch_dir (in order) to their corresponding gem(s)
# Build a gem only after all patches have been applied
# Only build the gem if it was patched
# Robust error handling
Cheers,
Tom
On 2016-08-19 10:15, Ryan Bigg wrote:
The `gem-ctags` gem does not expose a library file (a file in lib) which
matches that name. It is a RubyGems plugin, and so it doesn’t need to do
that.
Contrast this with `gem which rails`, which, on my machine, shows this path:
/Users/ryanbigg/.gem/ruby/2.3.1/gems/railties-5.0.0/lib/rails.rb
Rails _does_ have a file to expose and so `gem which` works.
Out of curiosity: why are you doing `gem which` in this case?
On August 19, 2016 at 1:03:58 PM, Ravi (Tom) Hale ([email protected]
<mailto:[email protected]>) wrote:
Any idea why my gem-ctags can't be seen by `gem which`?
+ravi@boxy:~/prj/sample_app$ gem uninstall gem-ctags
Successfully uninstalled gem-ctags-1.0.7
+ravi@boxy:~/prj/sample_app$ gem install gem-ctags
Fetching: gem-ctags-1.0.7.gem (100%)
Successfully installed gem-ctags-1.0.7
Parsing documentation for gem-ctags-1.0.7
Installing ri documentation for gem-ctags-1.0.7
Done installing documentation for gem-ctags after 0 seconds
1 gem installed
+ravi@boxy:~/prj/sample_app$ gem list | grep tags
gem-ctags (1.0.7)
ripper-tags (0.3.3)
+ravi@boxy:~/prj/sample_app$ gem which ripper-tags
/home/ravi/.gem/ruby/2.3.1/gems/ripper-tags-0.3.3/lib/ripper-tags.rb
+ravi@boxy:~/prj/sample_app$ gem which gem-ctags
ERROR: Can't find ruby library file or shared library gem-ctags
+ravi@boxy:~/prj/sample_app[1]$
I uninstalled and reinstalled ripper-tags and it can be seen just fine.
Puzzled,
Tom
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