Error "E: required field Package not found in (Debian::FieldError) " on some rare packages

[Mohammad Anwar Shah]

While using Debian::DpkgDeb module, sometimes "E: required field Package not found in (Debian::FieldError)" exception is thrown.

The package involved here is "libegl1-mesa_10.3.0-0ubuntu2intel1_i386.deb" which is from Intel driver.

Here is the error log

/usr/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /home/learner/Programming/older-debs-cleaner/test.rb
/var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:201:in `block in parseFields': E: required field Package not found in (Debian::FieldError)
 from /var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:199:in `each'
 from /var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:199:in `parseFields'
 from /var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:442:in `initialize'
 from /var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:153:in `new'
 from /var/lib/gems/1.9.1/gems/ruby-debian-0.3.8/lib/debian.rb:153:in `load'
 from /home/learner/Programming/older-debs-cleaner/test.rb:59:in `block in read_package_info2'
 from /home/learner/Programming/older-debs-cleaner/test.rb:56:in `collect'
 from /home/learner/Programming/older-debs-cleaner/test.rb:56:in `read_package_info2'
 from /home/learner/Programming/older-debs-cleaner/test.rb:84:in `<top (required)>'
 from -e:1:in `load'
 from -e:1:in `<main>'

After inspecting several hours, I found the cause. It it the method `load` in DpkgDeb module. in Line 143 of debian.rb source file. The comparison made won't match with that package's string, which is "control.tar.gz/". I have patched the file and it worked.

[Mohammad Anwar Shah (mohammadanwarshah)]

I am uploading a patch which helped me resolve the issue

[Ubuntu Foundations Team Bug Bot (crichton)]

The attachment "ruby-debian.fix.patch" seems to be a patch. If it isn't, please remove the "patch" flag from the attachment, remove the "patch" tag, and if you are a member of the ~ubuntu-reviewers, unsubscribe the team.

[This is an automated message performed by a Launchpad user owned by ~brian-murray, for any issues please contact him.]