Syntect fails to build when combined with serde

[epage]

I ran into this problem with cobalt. I hacked around it by disabling the default features I didn't need.

Example error

error[E0308]: mismatched types
  --> /home/epage/.cargo/registry/src/git.luolix.top-1ecc6299db9ec823/syntect-1.7.0/src/parsing/yaml_load.rs:90:34
   |
90 |         if let Ok(map) = get_key(h, "variables", |x| x.as_hash()) {
   |                                  ^ expected struct `std::collections::BTreeMap`, found struct `linked_hash_map::LinkedHashMap`
   |
   = note: expected type `&std::collections::BTreeMap<yaml_rust::Yaml, yaml_rust::Yaml>`
              found type `&linked_hash_map::LinkedHashMap<yaml_rust::Yaml, yaml_rust::Yaml>`
   = help: here are some functions which might fulfill your needs:
           - .hasher()

In case there is something weird we are doing with syntect

• where its used
• Cargo.toml
• lib.rs

[epage]

This is being forked off of #84

[robinst]

I think the problem is this: dtolnay/serde-yaml#33 which is caused by chyh1990/yaml-rust#44

Basically, one of the dependencies of cobalt (serde-yaml) turns on the preserve_order feature, which changes what type Hash is in yaml-rust from BTreeMap to LinkedHashMap. Syntect expects to be compiled with the default features, which means using BTreeMap.

But I think we might be able to fix it by using the type alias instead of the concrete type instead. Let me try that.