This stops using `to_string` as a proxy for this now-provided precise API.
This reverts commit b71927224f and bupms the
dependency version in Cargo.toml.
Updates to path source walking.
This is a collection of loosely related changes to path source walking:
* Add more context to error messages.
* Allow `package.exclude` patterns to match directories. Previously, the walker would recurse into the directory, and skip every file. Instead, just skip the whole directory. This can be helpful if the directory is not readable, or otherwise want to avoid walking.
* Don't require `Cargo.toml` to be in root of a git repo in order to use git to guide the selection. I'm not sure I understand the original reasoning that (any) `Cargo.toml` had to reside next to the `.git` directory.
The last is a moderately risky change, since it's hard to predict how this might affect more complex project layouts or new interactions with `.gitignore` that didn't exist before. Also, I'm wondering if it should just ignore if it fails to open the repo instead of emitting an error?
Closes#1729Closes#6188Closes#8092
Re-implement proc-macro feature decoupling.
This is essentially a rewrite of #8003. Instead of adding proc-macro to the index, it uses a strategy of downloading all packages before doing feature resolution. Then the package can be inspected for the proc-macro field.
This is a fairly major change. A brief overview:
- `PackageSet` now has a `download_accessible` method which tries to download a minimal set of every accessible package. This isn't very smart right now, and errs on downloading too much. In most cases it should be the same (or nearly the same) as before. It downloads extra in the following cases:
- The check for `[target]` dependencies checks both host and target for every dependency. I could tighten that up a little so build dependencies only check for the host, but it would add some complexity and I wanted to get feedback first.
- Optional dependencies disabled by the new feature resolver will get downloaded.
- Removed the loop in computing unit dependencies where downloading used to reside.
- When downloading starts, it should now show a more accurate count of how many crates are to be downloaded. Previously the count would fluctuate while the graph is being built.
We don't need the complexity of most channels since this is not a
performance sensitive part of Cargo, nor is it likely to be so any time
soon. Coupled with recent bugs (#7840) we believe in `std::sync::mpsc`,
let's just not use that and use a custom queue type locally which should
be amenable to a blocking push soon too.
The `anyhow` crate interoperates with the `std::error::Error` trait
rather than a custom `Fail` trait, and this is the general trend of
error handling in Rust as well.
Note that this is mostly mechanical (sed) and intended to get the test
suite passing. As usual there's still more idiomatic cleanup that can
happen, but that's left to later commits.
Pulls in alexcrichton/curl-rust#304 which fixes a bug from the last curl
update in #7308. This bug was not introduced by the Cargo PR itself but
rather by updating the `curl` submodule in the `curl-sys` crate. Without
this bugfix all downloads of a crate will make a new connection to
crates.io, which drastically increases download time since setting up a
connection takes so long.
