I want capistrano to invoke rake with --trace so I can figure out why it's failing. How do I do this? set :rake 'rake --trace'
doesn't work.
The best way I found is:
set :rake, "#{rake} --trace"
This way you don't overwrite the rake variable.
For example if you use bundler this is set before to:
"bundle exec rake"
and after to:
"bundle exec rake --trace"
The chances are your custom tasks aren't using the rake
variables, but instead hard-coding rake, here's an example:
run("rake sass:compile")
This is hard-coded, and won't care about your setting set :rake, 'rake --trace'
, here's the correct way:
run("#{fetch(:rake)} sass:compile")
Or, shorthand:
run("#{rake} sass:compile")
You can see this in practice in the Capistrano source code, in the one place that the default recipes actually invoke rake
, in the migrations task: https://github.com/capistrano/capistrano/blob/master/lib/capistrano/recipes/deploy.rb#L387
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