Hi,
When trying to package some dependencies for a new version of Nanoc, I
noticed that some gems start to ship SHA256 digests instead of SHA1 in
addition to SHA512.
This happens for example with the ddmetrics gem
https://rubygems.org/gems/ddmetrics
As a consequence, gem2deb fails on such gems with the following error.
ddmetrics doesn't seem to exist. Let's try to download it with 'gem fetch ddmetrics'
gem fetch ddmetrics
Fetching: ddmetrics-1.0.0.gem (100%)
Downloaded ddmetrics-1.0.0
-- Creating source tarball from ddmetrics-1.0.0.gem ...
tar xfm /tmp/ddmetrics-1.0.0.gem
/usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:131:in `block (2 levels) in verify_and_strip_checksums': undefined method `[]' for nil:NilClass (NoMethodError)
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:130:in `each'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:130:in `block in verify_and_strip_checksums'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:128:in `each'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:128:in `verify_and_strip_checksums'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:85:in `block in extract_gem_contents'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:83:in `chdir'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:83:in `extract_gem_contents'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:67:in `convert!'
from /usr/lib/ruby/vendor_ruby/gem2deb/gem2tgz.rb:33:in `convert!'
from /usr/bin/gem2deb:114:in `<main>'
I am considering adding Digest::SHA256 to the list of digests tested in
gem2tgz and skip the checksum computation if the digest name is not a
key of the hash read from the YAML file.
What do you think?
Cédric
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