Unable to build on Mac with MacPorts libgit2

[rpgoldman]

I pulled exa, installed rust, cmake, and libgit2 (the last two from MacPorts). But the "cargo build" failed with the following errors:

   Compiling libssh2-sys v0.1.8
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:109:36: 109:64 error: type mismatch resolving `<core::option::IntoIter<std::old_path::posix::Path> as core::iter::Iterator>::Item == std::path::PathBuf`:
 expected struct `std::old_path::posix::Path`,
    found struct `std::path::PathBuf` [E0271]
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:109                                   .chain(Some(val).into_iter())).unwrap();
                                                                                                                              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108:15: 108:30 error: type mismatch resolving `<core::option::IntoIter<std::old_path::posix::Path> as core::iter::Iterator>::Item == std::path::PathBuf`:
 expected struct `std::old_path::posix::Path`,
    found struct `std::path::PathBuf` [E0271]
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108     let val = env::join_paths(env::split_paths(&prefix)
                                                                                                         ^~~~~~~~~~~~~~~
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108:15: 108:30 note: required by `std::env::join_paths`
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108     let val = env::join_paths(env::split_paths(&prefix)
                                                                                                         ^~~~~~~~~~~~~~~
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108:15: 108:30 error: type mismatch resolving `<core::option::IntoIter<std::old_path::posix::Path> as core::iter::Iterator>::Item == std::path::PathBuf`:
 expected struct `std::old_path::posix::Path`,
    found struct `std::path::PathBuf` [E0271]
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108     let val = env::join_paths(env::split_paths(&prefix)
                                                                                                         ^~~~~~~~~~~~~~~
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108:15: 108:30 note: required by `std::env::join_paths`
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libgit2-sys-0.1.14/build.rs:108     let val = env::join_paths(env::split_paths(&prefix)
                                                                                                         ^~~~~~~~~~~~~~~
error: aborting due to 3 previous errors
Build failed, waiting for other jobs to finish...
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:130:19: 130:27 error: type `&std::path::PathBuf` does not implement any method in scope named `exists`
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:130     }).find(|p| p.exists())
                                                                                                            ^~~~~~~~
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:130:27: 130:27 help: methods from traits can only be called if the trait is in scope; the following trait is implemented but not in scope, perhaps add a `use` for it:
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:130:27: 130:27 help: candidate #1: use `std::fs::PathExt`
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:128:5: 130:28 error: mismatched types:
 expected `core::option::Option<std::old_path::posix::Path>`,
    found `core::option::Option<std::path::PathBuf>`
(expected struct `std::old_path::posix::Path`,
    found struct `std::path::PathBuf`) [E0308]
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:128     env::split_paths(&env::var("PATH").unwrap()).map(|p| {
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:129         p.join(&cmd)
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/libssh2-sys-0.1.8/build.rs:130     }).find(|p| p.exists())
error: aborting due to 2 previous errors

[rpgoldman]

Also fails with no-default-features:

   Compiling regex_macros v0.1.8
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/regex_macros-0.1.8/src/lib.rs:29:45: 29:52 error: unresolved import `syntax::ext::base::MacExpr`. There is no `MacExpr` in `syntax::ext::base`
/Users/rpg/.cargo/registry/src/github.com-1ecc6299db9ec823/regex_macros-0.1.8/src/lib.rs:29 use syntax::ext::base::{ExtCtxt, MacResult, MacExpr, DummyResult};
                                                                                                                                        ^~~~~~~
error: aborting due to previous error
Could not compile `regex_macros`.

[ogham]

I made exa use the latest version of libgit2-rs, which should fix the problems you encounter. Could you please try again?

[rpgoldman]

Thanks. That worked. BTW, I still had a bit of trouble installing with the makefile because exa was built in target/exa, not target/release/exa. But other than that, all was well (actually, there's an odd interaction between sudo make install and cargo, but I can report that separately).