better docs

Author: klkvr

crates/compilers/src/lib.rs

@@ -78,6 +78,10 @@ pub struct Project<C: Compiler = MultiCompiler, T: ArtifactOutput = Configurable
     /// Additional settings for cases when default compiler settings are not enough to cover all
     /// possible restrictions.
     pub additional_settings: BTreeMap<String, C::Settings>,
+    /// Mapping from file path to requrements on settings to compile it.
+    ///
+    /// This file will only be included into compiler inputs with profiles which satisfy the
+    /// restrictions.
     pub restrictions:
         BTreeMap<PathBuf, RestrictionsWithVersion<<C::Settings as CompilerSettings>::Restrictions>>,
     /// Whether caching is enabled