fixes cargo build command on osx

[zolkko]

These changes allows to use servo/rust-http repository as a dependency in Cargo.toml

Here is a sample program:

extern crate url;
extern crate http;

fn mian() -> () {
    let url: url::Url = Url::parse("http://example.com/example?test").unwrap();
    let request: http::client::RequestWriter = http::client::RequestWriter::new(Get, url).unwrap();
    println!("test = {}", request.url);
}

and Cargo.toml which I use:

...
[[bin]]
name = "blumenplace-border"
path = "src/main.rs"
[dependencies.url]
git = "https://github.com/servo/rust-url.git"
[dependencies.http]
git = "https://github.com/zolkko/rust-http.git"

Beside this, it seems like, Cargo requires that a repository contained a branch named "master". Otherwise there will be following error:

cargo build --verbose
    Updating git repository `https://github.com/servo/rust-http.git`
Unable to update https://github.com/servo/rust-http.git

Caused by:
 10 #[phase(plugin, link)] extern crate log;
  Executing `git rev-parse master` failed

Caused by:
  Could not execute process `git rev-parse master` (status=128)
--- stdout
master

--- stderr
fatal: ambiguous argument 'master': unknown revision or path not in the working tree.
Use '--' to separate paths from revisions, like this:
'git <command> [<revision>...] -- [<file>...]'

[zolkko]

I mean, for sure, It would make more sense to fix this in Makefile. Just wanted to point out that there is a issue.

[SimonSapin]

Have you tried using the upstream rust-http repository? https://github.com/chris-morgan/rust-http This one is meant for use in Servo and therefore may have some build system quirks and be behind in terms of Rust language upgrades.

[zolkko]

I started using servo's repo because of deprecated url module. But at the moment chris-morgan/rust-http uses rust-url as well. So I changed dependency declaration back to chris-morgan/rust-http repository. And it works like a charm. Thank you very much for your answer.