Add the start of a hindley-milner typechecker

The beginning of a parse-don't-validate-based hindley-milner
typechecker, which returns on success an IR where every AST node
trivially knows its own type, and using those types to determine LLVM
types in codegen.

1 files changed, 1 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index c9796a8215..2ac7d25409 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -10,6 +10,7 @@ clap = "3.0.0-beta.2"
 derive_more = "0.99.11"
 inkwell = { git = "https://github.com/TheDan64/inkwell", branch = "master", features = ["llvm11-0"] }
 itertools = "0.10.0"
+lazy_static = "1.4.0"
 llvm-sys = "110.0.1"
 nom = "6.1.2"
 nom-trace = { git = "https://github.com/glittershark/nom-trace", branch = "nom-6" }