[Bug 2020000] Re: Merge Cargo source package into Rust

[Simon Chopin]

So, there was a slight communication mishap on the review. It was *not*
completed, just ongoing.

I finished the first round, with the following comments:

* Could you add a Recommends: rustc-doc to cargo doc? I'm betting there
are more cross references in that direction than the other one (that
already has that field).

* What's your rationale behind using binary version wrangling for cargo
vs just being vigilant that it might be a cause of breakage in the
future? I'm not saying you're wrong, but I tend to concur with Michael's
comment on the spec that "we would want to have a good reason to do
that" :slightly_smiling_face:

I know it might seem weird coming from me since I raised the issue in
the first place, but I mainly wanted an acknowledgement that you were
aware of the potential problems this might cause us in the future. The
issues I find with sticking with the crate version number are the
following:

  - This version number is unexpected for pretty much any Rustacean. Nobody uses it.
  - That's a minor papercut, but that means you can't just do a $RUSTC_PACKAGE_VERSION.deb to quickly designate all debs from that package. Like I said, minor, but highly annoying. And yes I know it's unsafe in the general case, but it's worked pretty well for me so far :wink:
  - You have to remember to bump the version number when doing a packaging upload (as in not changing the upstream sources)
  - This adds some more complexity to d/rules

* (kind of out of scope as it's not in src:cargo either) at some point
*someone* wrote some autopkgtests for cargo that were basically just
dealing with a simple crate (creating the project, adding a dependency,
etc...). I don't know who did it nor where the code ended up, but it'd
be a nice thing to have in addition to the full-blown rebuild. Again,
out of scope.

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https://bugs.launchpad.net/bugs/2020000

Title:
  Merge Cargo source package into Rust

Status in cargo package in Ubuntu:
  New
Status in rustc package in Ubuntu:
  New

Bug description:
  This bug report tracks the progress where we merge the Cargo source
  package into Rust source package in Ubuntu.

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