also create separate pty structs per backend

for now, they are identical, but i will change them to be specialized
next

1 files changed, 2 insertions, 0 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 27e5bf1..6357d07 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,6 +9,7 @@ libc = "*"
 nix = "0.17"
 thiserror = "1.0"
 
+async-io = { version = "1.3", optional = true }
 async-process = { version = "1.0", optional = true }
 tokio = { version = "1.2", optional = true, features = ["process"] }
 
@@ -16,3 +17,4 @@ tokio = { version = "1.2", optional = true, features = ["process"] }
 default = ["std"]
 
 std = []
+async-std = ["async-io", "async-process"]